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2-D Data Path

Acuson Aspen Ultrasound System

1096

Spectral Doppler Data Path

SPECTRAL DOPPLER DATA PATH The following DIMAQ workstation boards Spectral Doppler: •

Doppler Acquisition board (DAQ)

•

Doppler Spectral Processor (OSP)

•

Waveform Processor (WFP)

•

Audio Processor (ZAP)

In addition to the boards mentioned above two boards in the scanner also Spectral Doppler. These boards are BBQ and AUX. The AUX board is utilized only in case of AUX CW and Imaging CW Doppler modes. Doppler information is contained in the ana-Phase and Quadrature (l & Q) signals which originate in the Scanner. The DAQ digitizes the I & Q signals, and es them to the OSP. The OSP converts the digital-time-
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Service Manual

2-25

Chapter 2 - System Architecture

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Spectral Doppler Data Path


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Color Doppler Data Path

COLOR DOPPLER DATA PATH The following DIMAQ workstation boards Color Doppler: •

Flow Estimator Calculator (FEC)

•

Flow Estimator Buffer (ZFEB)

•

Color Reconstruction Processor (CRP)

As in the case of Spectral Doppler, BBQ board in the scanner also s Color Doppler. All color flow data is developed from the doppler I & Q signals. In Color Doppler the digitized I & Q output from the DAQ is sent to the FEe. The FEC converts the digital Doppler data to Color Doppler velocity data (Le. flow rate and direction), and sends it to the ZFEB. The ZFEB stores the most recent frame of Color Doppler data for the real-time image, and also stores multiple frames for Cine mode. The output of the ZFEB is sent to the CRP. The CRP synchronizes the Color Doppler data to the TV line rate, and sends it to the SVC in video raster format. The actual col"r assignments based on the Color Doppler data is done by the SVe. The SVC overlays (or combines) the Color Doppler data with the 2-D image and display graphics. The SVC sends this system video image to the VPB. The VPB performs a digital-ta-analog conversion, and routes its output to the lOB. The VPB also performs progressive-ta-interlaced and all other video formal conversions (Le., composite, component, Betacam and Y-e) for output to peripherals. The lOB buffers' the video. The system image is now complete and available at the lOBs output, ready to be presented to the monitor and peripherals for display. Figure 2-14 shows a block diagram of Color Doppler data path.

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Service Manual

2·27


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Color Doppler Data Path


1096

M-mode Data Path

M-MODE DATA PATH The Waveform Processor (WFP) board in the DIMAQ workstation s the M-mode functionality in the system. The WFP contains M-mode buffers and controls the transfer of M-mode data to the RP. like 20 data, M-mode ultrasound lines are received from the Scanner and digitized by the AQP. The WFP acquires the M-mode data and stores it in its buffers. It then initiates a M-mode transfer to the RP, and sends setup information to the RP for generation of the M-mode buffer removal addresses. The RP generates the removal addresses, and accesses the M-mode buffers via the remote interface cable. The M-mode data is transferred to the RP. The RP then routes the OATA to the COM. The COM stores the data in its image and Cine memories. The M-mode (and 20) data from the COM along with the waveform graphics and erase bar from the WFP are sent to the SVc. The SVC overlays graphics on the M-mode display and 20 image. and sends the system video image to the VPB. The VPB performs a digital-to-analog conversion, and routes its output to the lOB. The VPB also performs progressive-ta-interlaced and all other video format conversions (i.e., composite, component, Betacam and Y-C) for output to peripherals. The lOB buffers the video. The system image is now complete and available at the lOB's output, ready to be presented to the monitor and peripherals for display. Figure 2-15 shows a block diagram of M-mode data path.

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Service Manual

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Cine Operation

CINE OPERATION Cine allows storage of the most recently acquired image and strip data and allows playback of those frames at a variety of speeds. The Scan Converter acquires and allows playback of image and strip data (Spectral Doppler and cardiac M-mode) via the Cine Data Memory (COM). The Scan Converter within the DIMAQ workstation receives the analog ultrasound data and the I & Q signals from the Scanner, as described earlier. The Cine RAM on the COM stores the most recently acquired frames of grayscale image data, Doppler data, and M-mode data, while the FEB stores frames of color Doppler. The WFP stores the physio traces and derived waveforms. The SVC combines and displays thl: Color Doppler and the M-mode data from the CRP, the B/W 2-0, Spectral Doppler and M-mode data from the COM, and the physio traces; and Pulsed Doppler derived waveforms from the WFP.

AEGIS SYSTEM The Aegis system in Aspen ultrasound system provides static images and dynamic clips acquisition and review. Refer to Figure 2-16 for Aegis system data path. The Aegis system functionality is ed by the following boards: •

Digital Compression Interface (DCI)

•

JPEG Compression board (daughter board)

The DCI performs the acquisition and review functions for Aegis on the Aspen system. Upon initiation of an image capture, the system image is sent from the SVC to the DCI image buffers. The DCI/JPG compresses the image for storage and sends it to the hard disk via a SCSI interface. The JPEG board provides an alternative compression/ decompression technique to the RLE (Run Length Encoding) technique that is resident on the DCI. The Aegis system is also the heart of the stress echo application.

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Service Manual

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2-32


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EGG and Physio Signal Processing

ECG AND PHYSIO SIGNAL PROCESSING

IMPORTANT:

I

The Physio Interface allows the ECG module to display an ECG and an auxiliary signal on the video monitor, and the Physiologic module to display heart sound, pulse, and respiration. These signals may be used to trigger the 2-D image update when using pulsed Doppler or M-mode or they may be used as a time base when reviewing the Cine memory.

The ECG and Physio modules are not designed for use in conjunction with electrotherapy or diathermy equipment. The ECG and Physio modules mount just below the Interface. Three cables are connected to the ECG module: the power cable PI, physio interface cable P2, and the phono jack P4. The power and physio interface cables also connect to the Physio module. The power cable supplies +12 V and -12 V to the ECG and Physio module. These voltages are provided by the Main DC power supply. The R-wave beeper signal is ed to the ZAP board via the phone jack on the ECG. The beeper may be routed to the speakers by the ZAP board. The physio interface cable contains the signal and status lines which are used by the Aspen system. These signals include the ECG wave, auxiliary wave, heart sound, pulse, respiration, and trigger signals. The status lines include ECG channel on/ off, auxiliary channel on/ off, phono on/ off, pulse on/ off and phono mode. These signals are sent to the WFP board in the DlMAQ workstation. The WFP uses the signals to reconstruct the waveforms on the video monitor or to coordinate the 2-D image updates when in triggered mode.

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AUDIO Audio data is generated from several sources in the system and is used by the system loudspeakers or headphones, and external VCRs. Refer to the Figure 2-]7 for audio data path. Each of these sources and its destinations are described below.

•

The ZAP board generates Doppler audio from the DSP Doppler I & Q signals (sent via the lOB). Doppler audio can be selected by software for output to the system speakers and/or the lOB. The lOB routes it to external VCRs.

•

During VCR playback the lOB routes VCR audio to the ZAP. The AP amplifies the VCR audio and sends it to the system speakers or headphones.

•

The ECG module creates a beeper to indicate the R-wave. The beeper is then routed to the Audio Processor board (ZAP) where it is amplified. The R-wave beeper output can be selected by software for output to the system speakers or headphones and/or the lOB. The lOB routes it to external VCRs.

Microphone

The system microphone is used to create audio annotation. The audio annolation is then routed to the Audio Processor board (ZAP) where it is amplified. The microphone output can be selected by software for output to the lOB. The lOB routes it to external VCRs. The microphone data can not be sent directly to the system speakers.

Volume Control

The Interface Controller (UIC) controls the volume for all audio sent to the system speakers. ZAP audio destined for the speakers is sent to the VIC. The volume controlled audio is returned to the ZAP for power amplification. The audio is then routed to the Monitor System Equalizer board (MSE), and then on to the system speakers. In the case where headphones are used the MSE is byed. The UIC also generates audio for interface . The VIC mixes the interface audio in with the volume controlled audio it sends back to the AP. Thus interface audio is only sent to the speakers and may not be captured by external VCRs.

IMPORTANT:

2-34

I

The volume control is located under the soft keys on the Monitor Assembly.


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Audio

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Figure 2-17 Audio Data Path

Interface

The Interface consists of three major subassemblies: •

Interface Controller (UIC)

•

Depth Control (UOC)

•

Interface (UIP)

The Interface provides the interface between the and the Aspen system. The UIC has a processor that monitors the status of the controls and when changes occur, sends an interrupt to the System Control Processor located on the SVC board. The SVC then initiates the sequence of events needed to configure the Aspen system as required. The Interface is designed in a modular fashion. The UIC board mates to the switch assembly (UIP) via stand offs and hard connectors. The trackball, Qwerty (Alphanumeric) keyboard, and UDC potentiometers assembly are connected with ribbon cables.

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Service Manual

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DIMAQ WORKSTATION ASSEMBLIES The following circuit board descriptions are arranged alphabetically by the three letter acronym of each board. A brief functional description of each board is provided. See the Scanner Assemblies section for infonnation about the boards in the Scanner.

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Figure 2-18

2-36

Scan Converter DIMAQ Workstation Board Layout


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DIMAQ Workstation Assemblies

AQP

Acquisition Processor Board PIN 31292

Function

The main function of the Acquisition Processor board is to digitize 2-D and M-mode analog Ultrasound Video data (US Video) that is ed from the Scanner. This board receives its input from the VDT via the DBL and lOB, and sends its digitized output to the Reconstruction Processor (RP) board. Digitized M-mode data is routed to WFP board for generating M-mode strip displays. The AQP is controlled by the Scan Converter (SCC) processor on the RP (there is nO microprocessor on the AQP). The AQP functions are: •

Digitizes 2-D and M-mode US Video for Scan Converter processing

•

Performs filtering and other Signal processing

•

Controls transfer of data to the RP

COM

Cine Data Memory Board PIN 41632

Function

The primary functions ofCine Data Memory board are to provide the buffer storage area necessary to perform time-base correction between the variable frame rate ultrasound scan and the fixed frame rate TV raster scan, and to perform scan conversion from the ultrasound scan format to the video raster format. Secondary functions include persistence generation and gray level mapping (postprocessing). In addition, the CDM continuously stores the most recently acquired image and strip data which may then be reviewed by the . To allow for maximum usage of available memory, the number of video frames stored varies according to the format of the system. The Imaging Cine function is available with gray-scale and color Doppler imaging. Strip Cine function is available with spectral Doppler and cardiac M-mode. The COM stores only the gray-scale portion of the image. Color Doppler frames are stored on the ZFEB. The CDM functions are:

• • • • •

Storage of image·data for Cine review TIme base correction Persistence Postprocessing Storage of the most recent gray-scale image data

CRP

Color Reconstruction and Processing Board PIN 41622

Function

The Color Reconstruction and Processing board converts the color data from the scan format to the video format used by the monitor. It is used in conjunction with the FEC and ZFEB. The CRP reads data from the ZFEB in synC with the video raster. This data is then

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Service Manual

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ed to the SVC where it is combined with the 2-D ultrasound image. CAC

Doppler Acquisition Board PIN 19312

Function

The Doppler Acquisition board is essentially a high speed analogto-digital converter. The DAQ receives and digitizes the analog I & Q signals from the BBQ, and then routes these signals to the DSP and FEC

CSP

Doppler Spectral Processor Board PIN 14922

Function

The Doppler Spectral Processor board converts the time-domain Doppler data digitized by the DAQ to frequency-domain data suitable for display in Spectral Doppler modes. This data is then ed to the RP. The DSP also prepares data for use by the Audio Processor (ZAP). This data is used to synthesize the Doppler audio signal for the speakers.

ECG! Physio Module

Electrocardiogram Module PIN 37918

Function

The Electrocardiogram module is an optional accessory that may be installed on an Acuson Aspen system. It allows the display of an ECG or an auxiliary signal from a specialized transducer. Auxiliary signals may include heart sounds, respiration, etc. The ECG module mounts under the interface of the Aspen system. Three cables are connected to the ECG: the power cable PI, physio interface cable P2, and the phono jack P4. The ECG is powered by the +12V and the -12V taken from the main power supply. The ECG, auxiliary waveform, pulse and beeper signals as well as the status lines, are ed to the WFP board in the DlMAQ workstation via the ECG physio interface cable. The beeper signal is ed to the ZAP circuit board via the phone jack.

WARNING!

The ECG module is not designed for use in conjunction with electrosurgery or diathermy equipment. To reduce the risk of electric shock or bums, use ONLY the patient cable and leads supplied with the unit. Use of ECG cables other than those supplied by Acuson could defeat the current limiting and electrical safety features of the ECG. For best performance and optimal recovery time, use the Acuson silver-silver chloride electrodes. Additional patient cables and lead kits are available from Acuson.

2-38


t096

D/MAQ Works/a/ion Assemblies

FEe

Flow Estimator Calculator Board, PIN 36552

Function

The Flow Estimator Calculator board is used in conjunction with a ZFEB and CRP. The Flow Estimator Calculator extracts data from the Doppler data that has been digitized by the DAQ. This data is then ed on to the ZFEB.

lOB

Input/Output Board, PIN 41312

Function

The Input/Output board primary function is to proVide signal I/O between the DlMAQ workstation and other internal sub-systems and peripherals. The lOB also provides a 7-segment display for power supply error reporting, and 5 colored LEOs for indicating status on the Ethernet lOBase-T communication interface (for future use). Specific functions of the lOB: o

Terminates Scan Converter busses

o

Provides a buffered digital interface to the ZS via the ZDTs dual-Port RAM.

o

Provides a buffered digital interface to the UICs dual Port

RAM. o

Provides serial and parallel I/O interfaces to peripherals.

o

Provides SCSI, Ethernet AUI, and lOBaseT interfaces to the DO and the outside world.

o

Provides Ethernet communication activity indicators.

o

Buffers various formats of video outputs to peripherals.

o

Multiplexes video inputs from peripherals to the VPB.

o

Provides audio interface to the Audio Processor board from the DSP, and to/from VCR, and Betacam.

MSE

Monitor Speaker EquilizeL PIN 40942

Function

The Monitor Speaker equilizer board balances the audio frequency spectrum to match the acoustic performance of the system speakers.

RP

Reconstruction Processor Board, PIN 41662 (NTSC), 41762 (PAL)

Function

The Reconstruction Processor board receives digitized 2-D data from the Acquisition Processor, and performs scan conversion to linear, Vector wide array, and curved array image formats. The RP also provides autonomous control of the scan conversion process by managing the AQP and CDM boards. The RP comes in NTSC and PAL specific versions. The RP functions are:

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o

Receives and buffers digitized 2-D data from the AQP.

o

Receives and routes digitized strip format data from the WFP.

Service Manual

2-39


•

Provides control and COM memory addressing for storage of its output data into the image memory on the COM.

•

Provides the addressing for removal of data from the image memory on the COM.

•

Provides output clock to produce irregular display formats for all formats.

SVC

Syscon & Video Controller Board, PIN 41642

Function

The Syscon & Video Controller board holds the master processor (Syscon Processor) for the Aspen system. The SVC functions are: •

Overall System Control - Syscon processing - System Bus Interface (Bus Master) - System Bus Arbitration - Interrupt Control - Graphics Control

o

Combines 2-0 and Color Doppler Data

o

Combines Image and Graphics Data

o

Real-TIme Clock services

o

Battery Backed Memory

UIC

Interface Controller, PIN 41302

Function

The Interface Controller board scans the operator controls and informs the Scan Converter of any changes in the state of the operator controls. The VIC employs a microprocessor that monitors the keyboard and special function buttons. An AID converter on the VIC converts the outputs of the DGC pots and gain pots to a digital signal which is also read by the microprocessor.

VPB

Video Processor Board, PIN 41652 (NTSC), 41752 (PAL)

Function

The main function of the Video Processor Board (VPB) is the conversion of video signals from one format to another. The VPB performs format conversions for both internal and external video sources. System video from the SVC arrives at the VPB in a digital non-interlaced (progressive) format.The VPB converts this digital RGB to analog RGB for display on the system monitor. It also converts the system video into interlaced RGB, Y-C (SVHS), Betacam, and Composite. The system also accepts interlaced RGB, Betacam, Y-C, and Composite as video input from external sources. The VPB converts these to non-interlaced RGB to analog video for display on the system monitor.

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DIMAQ Workstation Assemblies

WFP

Waveform Processor Board, PIN 41612

Function

The Waveform Processor board controls the scan conversion of strips for M-mode and Doppler Spectral displays, including all related graphics. It also reconstructs physio waveforms from data provided by the physio modules (ECG and HPR). The WFP receives Doppler Spectral data from the DSP, and M-mode data from the AQP. Output from the WFP is sent to the COM via the RP. The WFP functions are:

• • •

Generates the M-mode strip.

•

Generates baseline and scales for waveform/strip displays.

•

Generates and positions the erase bar for waveform/strip displays.

•

Initiates output transfer of M-mode and Doppler Spectral data to the COM via the RP.

Provides Strip Cine memory storage.

Generates waveform/strip displays.

ZAP

Audio Processor Board, PIN 45512

Function

The Audio Processor boand performs two basic functions related to the handling of audio functions: generation of left and right audio based on the I & Q signaIs and the routing of audio signals based on the configuration of the system and control signaIs from the Syscon Video Controller (SVC). Inputs available to the audio signal switching matrix include: •

Left/right audio generated from I & Q signals

•

VCR left and right audio

•

Beeper from ECG module

•

Onboand microphone

These Signals may be routed to the following outputs: •

Headphones left/right

•

Speakers left/right

•

VCR record left/right

ZFEB

Flow Estimator Buffer Boand, PIN 45792

Function

The Flow Estimator Buffer boand is used in conjunction with a FEC and CRP. It receives data from the FEC and extracts velocity and variance data. These parameters are then stored. The ZFEB is capable of storing the most recently acquired frames of color information for use in conjunction with Imaging Cine. This data is then read out by the CRP in sync with the video raster. The color spatial persistence function is performed on the ZFEB.

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Service Manual

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Chapter 2 . System Architecture

2-42


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Aspen™ Ultrasound System Service Manual

Power Subsystem

cc:uson

CHAPTER 3

Power Subsystem

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Power Supply Architecture

3-2

Theory of Operation

3-3

Primary AC Wiring· Power Configurations Peripherals Power System DC Power Distribution Power Supply Synchronization Power Fail Signal Power Up Sequence Power Off Sequence

3-3 3-5 3-5 3-5 3-6 3-6 3-8

3-9

Power Sub Assemblies

3-10

Main Power Supply Programmable Power Supply

3-10 3-13

Isolation Transformer Box

3-14

Power Usage

3-15

Service Manual

3-1

Chapter 3 - Power SUbsystem

POWER SUPPLY ARCHITECTURE The Acuson Aspen system is capable of running from.an interference free AC power source. The power supply is composed of four main assemblies:

WARNING!

•

AC Input/Output box (AC Box)

•

Main Power Supply

•

Isolation Transformer box

•

Programmable Power Supply (PPS)

In addition to power line voltage, voltages as high as 300 VDC are also present in the Aspen power supplies, wiring harness and backplane. with these voltages could result in injury or death. Because of these high voltages, all internal parts of the system should be treated with caution and serviced only by competent and trained service personnel. A system cabling diagram which includes the power sub-system cabling is provided in Appendix A, System Drawings.

3-2


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Theory of Operation

THEORY OF OPERATION Primary AC Wiring

AC power is supplied to the system via a detachable, hospital-grade low leakage power cord. Several cords are available for use in various countries. AC power enters the system through the AC Input/Output box. This AC line voltage is ed through the main circuit breaker, and an EMI filter before it is sent onto the Main Power Supply. Note: The EMI filter attenuates conducted noise in the RF spectrum and decouples earth ground from the system ground to reduce the effects of earth ground noise. Within the Main Power Supply the AC line voltage is split. It is sent to the DC generating part of the power supply and also sent on to the Isolation transformer box. Within the Isolation Transformer Box the AC line voltage is ed through a circuit breaker and a relay before it reaches the isolati.on transformer primary. This relay is controlled by the + 12 V rela y output from the Main Power Supply. This allows the Aspen system to come up to tull power before the peripherals are powered on. From the secondary winding of the transformer the isolated AC voltage is sent through two individual circuit breakers, and then onto the system Monitor and PPS respectively. From a second transformer secondary, isolated AC is sent back to the AC Input/ Output Box for powering the accessory outlets. At the AC Input/Output Box, the isolated AC is also sent through a circuitbreaker and EMI filter, and then to the accessory outlet receptacles. Refer to Figure 3-1 for a diagram of the AC power distribution.

IMPORTANT:

Whenever any device connected to the primary side AC power is replaced, it is suggested that the leakage current to chassis ground of the system be measured and verified to be in compliance with the regulations of the country in which the system is being used. Primary-side components includes the power cord, AC Input/Output Box, Main Power Supply, and Isolation Transformer Box. your Acuson Customer Engineer if you need assistance in making this measurement.

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Service Manual

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Chapter 3 - Power Subsystem

( SYSTEM AC INPUT

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AC Power Distribution

Acuson Aspen Ultra.,ound System

1096

Theory of Operation

Power Configurations

The Aspen power subsystem is designed to provide reliable power under a wide range of conditions. The system can be configured to accept input voltages of 90 to 127 VAC or 207 to 253 VAC at 47 to 63Hz. The power cord may be detached from the supply and replaced with a cord appropriate for the electrical standards of the country where the system will be used.

IMPORTANT:

The Aspen system uses two versions of the AC Input/Output Box and Isolation Transformer Box. This allows the system to accept either 115 VAC or 230VAC.

Power SUbsystem Units

115 VAC PIN

ACBox Isolation Transformer Box

37804

230VAC PIN

37981

37805

49365

Additional details are provided in Power Supply Subassemblies section later in this chapter.

Peripherals Power

The Aspen system provides four isolated accessory outlets for powering peripherals that don't have a built in isolation transformer. The path for the Isolated AC power to the accessory outlets has been described in the Primary AC wiring section above, and is shown in Figure 3-1 (AC Power Distribution).

System DC Power Distribution

There are two DC power supplies in the system, the Main Power Supply and the Programmable Power Supply. Refer to Figure 3-2 for DC distribution;

Main Powar Supply (DC Generation)

The Main Power Supply provides all but one of the system DC voltages. The follOWing major subassemblies are powered by this supply.

Programmable Power Supply (PPS)

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•

Scanner

•

DIMAQ workstation

•

Programmable Power Supply

•

Interface

•

Fans

•

Disk Drives

The Programmable Power Supply provides the single other DC voltage. This DC voltage is software programmable for predetermined increments between 30 to 150 VDC, and is used by the Transmitter boards (XMT). This is done to minimize the heat dissipation on the XMT boards and to increase overall system efficiency.

Service Manual

3-5


There are 2 field replaceble fuses in the system. Both are in the system's DC Distribution, and located above the Main Power Supply in the Power Supply area of the system. F1 fuses a SVDC line which is used by the Interface Controller (UIC). F2 fuses another SVDC line which powers the harddrive and MO drive.

Fuses

IMPORTANT:

Power Supply Sync

I

Be sure to replace fuses with the same rating and type. Power Supply Sync is a SO kHz clock generated on the STG board. It is used to synchronize the switching frequency of the power supplies within the system.This helps reduce the presence of power supply noise in the image. If sync is not present the PPS and Main Power supply will continue to operate in a non-synchronized mode.

Power Fail Signal

3-6

The DC Power Supply provides a power fail signal. This signal allows the Aspen system to shutdown in the event that AC power is interrupted. The DC Power Supply can maintain power for 20 milliseconds after AC power is lost.


1096

Theory of Operation

AC POWER RELAY-CONTROl

(to Isolating Transtoremer)

1-.

MAIN

DC

POWER SUPPLY

12 VOC PERIPHERAL

SCAN CONVERTER FANS

810'

VDC

--- - I---

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--

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SCANNER FANS

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ISOLATION TRANSFORMER

ISOLATED

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Figure 3-2

1096

DC Distribution

Service Manusi

3-7


Power Up Sequence

When the system is plugged into an AC power outlet and the main circuit breaker is switched on, a standby power is supplied to a circuit located on the lOB board which monitors the system's power On/Off switch. Pressing the momentary On/Off power switch on the Aspen system sends a power-on request to the lOB. The lOB latches the power-on request, and sends it to the Main Power Supply. The Main Power Supply then turns on all system DC power which allows the system to power up. The 12V peripheral power comes up in approximately 150 miliseconds and closes the relay in the Isolation Transformer Box, applying AC power to the primary of the Isolation Transformer which in tum brings up the monitor, PPS and peripherals that are connected to the accessory outlets. During the off-to-on transition phase of the power supplies, before power has stabilized, a reset signal, generated by the lOB, is applied to the Scanner and DIMAQ wwigitation. After the power has stabilizednhe system reset is removed by the lOB. At this point, the system begins its boot sequence. Refer to Figure 3-3 for a simplified diagram of this operation.

PWR ON REQUEST

U.I.

L _

1----------_

DC POWER

Y(STANDBYI

ALL SYSTEM DC POWER

System

Controller

MAIN POWER SUPPLY

Y (STANDBY)

MAIN CIRCUIT

REQUEST POWER ON

BREAKER

AC POWER INPUT

Figure 3-3

3-8

Aspen System Power On/Off Sequence


1096

Theory of Operation

Power-Off Sequence

The following power-off sequence is needed to power down the system in a safe and repeatable manner, allowing the system time to store important information in battery-backed RAM, and store Aegis exams to disk without damaging the system internal hard drive. After the Aspen system has been powered on, pressing the On / Off power switch resets the latch on the lOB boand and removes the power-on request. This causes an interrupt to be sent to the System Controller indicating a power down request has been initiated. The Aspen system then performs a power-down sequence that will include completing any disk accesses, closing all files that are open and any other housekeeping that is required. \ii'lIt'n the housekeeping functions are complete, the System Controller sends a power off request to the lOB, and the lOB es on the request to the Main Power Supply, resulting in all the DC voltages being turned off, thus shutting down the system.

IMPORTANT:

Never tum off the power by pulling the plug from the wall outlet or turning off the Main circuit breaker, as it may cause hard drive or MO failures and you may lose unsaved Aegis system exams. You should always tum off the system by using the power switch on the Interface. The system will also power off if one or more of the following occurs:

•

AC input power is lost

•

The Main Power supply detects a fault (e.g., fan failure or over temperature condition)

•

The main circuit breaker opens

This completes the power-off sequence. The +5 VDC standby voltage (Vstandby) to the lOB remains on to monitor the On/Off switch for the next power on request as long as system is plugged into the wall and the main circuit breaker is on.

1096

Service Manual

3-9


POWER SUB ASSEMBLIES The architecture of the two major power supplies is described in further detail below.

Main Power Supply

The Main Power Supply is the heart of the power distribution system and is capable of being fully synchronized with other system hardware. It is a highly integrated, compact and precise power supply. It switches automatically to accept input power from 85 to 264 j,jAC. The AC input is split, sending the AC input voltage to the DC generating part of the power supply, and also directly on to the Isolation Transformer box. DC voltage generation within the Main Power Supply is achieved with three isolating downconverters. Each down converter generates DC voltages as follows: •

The high power downconverter supplies the following high output DC (HODC) voltages: +5.0 VDC scan converter digital (Heavy Duty) +5.0 VDC scanner Digital (Heavy Duty) +12 VDC Peripheral +8- 16 VDC variable fan drive voltage +12 VDC Relay

•

The 300 VDC downconverter provides the follOWing high output DC (HODC) voltage: +3OOVDC

IMPORTANT:

A error code 1 or 2 (HODC errors) on the lOB 7-segment display indicates a problem on one or more of the high power or 300 VDC down converter supplies. •

The clean output downconverter supplies the follOWing clean output DC (CODC) voltage: +5.0 VDC Analog +7.5VDC -7.5VDC +12.0VDC -12.0VDC +15.0VDC

IMPORTANT:

3·10 . ' c..

I

-15.0VDC

A error code of 3 or4 (CODC) on the lOB 7-segment display indicates a problem on one or more of the clean output downconverter supplies.


1096

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3-11


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3-12

The Main Power Supply (top and side views)


1096



The Programmable Power Supply (FPS) provides the voltages used by the Transmitter Boards (XMT). Having a programmable power supply that drives the Transmitter boards (XMT) at voltages no higher than required, minimizes the heat dissipation on the boards, and increases the overall efficiency of the power supply and Scanner. The PPS is powered by 115 VAC from the Isolation Transformer box, and 300 VDC from the Main Power Supply. The 115 VAC is used to drive the control circuitry in the PPS, and the 300 VDC is downconverted to generate the PPS's programmable output to the transmitters. Transmit voltages are commanded by the Scanner via four control lines from the ZDT. Four status lines, back to the ZDT, monitor the voltage output of the PPS for the Scanner. If the control lines and status lines are not in agreement, the Scanner will not fire the transmitters.

IMPORTANT:

I

If the circuit breaker on the AC Input Box trips, control power is no longer be available to the PPS and the PPS output will shut down.

+300V DC (from DC Power Supplyt

Vxmt (30 • 150 V) to Downconverter

t Control by Scanner

•

Power Supply Control

115 V AC (from Isolation Transformer)

Status to Scanner

Voltages to local cir cuitry

• •

/""

30 26

22

24

b

20 -22 Control and Status

20

Figure 3-6

1096

PPS Connector PPS Connector

•• • --------d !' • • • --------z 28

XMI


Service Manual

2' 26 28 30

115VAC 3O-150VDC 300 VDC Return

God

PM-31loVk

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3-13


ISOLATION TRANSFORMER

Box

The Isolation Transformer box provides isolated AC power to the monitor, PPS, and the isolated ory outlets. The AC primary input for the Isolation Transformer box is routed via the Main Power Supply and originates at the AC Input/Output box. This AC line voltage es through a circuit breaker and a relay before it reaches the isolation transformer. This relay is controlled by the +12 V relay output from the Main Power Supply. Alternately the relay can be closed by an extemal12 VDC source for purposes of electrical testing. The secondary of the isolation transformer consists of three separate windings (taps). One of the windings provides power to the Aspen system monitor and to the Programmable Power Supply (PPS). The system monitor receives 115 VAC power through a circuit breaker. Current from this breaker is fed through a second circuit breaker to power the PPS. The other two transformer windings are used to power the AC accessories outlets. These two windings are configured (at the factory) either in parallel or series to provide for 115 VAC or 230 VAC at the accessory outlets (as required). WARNING!

3-14

The primary input circuit breaker will interrupt power to all of the subsystems powered by the Isolation Transformer box. However, secondary circuit breakers only affect power to the specific subassembly they power. The circuit breaker for the accessory outlets is on the AC Input/Output Box.


t096

Isolation Transformer Box

Power Usage

The power usage by each board or assembly in the Aspen system is shown below in Table 3-1 and Table 3-2. Table 3-1 PCBI

FRU

AUX APD BBQ DBL

Scanner Power Supply Usage by Board

Scanner Analog Voltages

Scanner Digital +15V -15V +7.5 V -7.5 V +5.0V +5.0 V

• • • •

•

•

• •

•

•

•

• •

•

•

DeC IFD IGD

• •

• •

•

•

• •

•

MXK

•

•

•

•

SDL

•

•

•

•

• • • • •

•

•

•

•

XDY VDT ZDL ZDT

ZIP

• • • •

TRM

XMT

•

•

S STG

• •

MEX

RCV

PPS From 150 V -7.5 V onDBL -5V

•

• •

•

•

• Voltage Present

1096

Service Manual

3·15


Table 3-2

Power Supply Usage by Other BoardslFRU

PCB I FRU

AQP

SC Digital +5.0 V

+12 V

-12 V

Vstandby

Peripheral +12 V

+12.0 V

Fan

•••

--------------

COM

•

CRP

•

DAQ

VPB

• • • • • • • •

WFP

•

UIC

• •

OSP DCI

FEB FEC lOB SVC

ECG

•

•

•

•

• •

• • •

• • •

• •

• • • •

•

•

ZAP Hard drive MOdrive

• •

•

•

• • • •

SCFans Scanner Fan Bay Fan PPSFan

• •

• Voltage Present

3-16


1096

Aspen™

Ultrasound System Servic:e Manual

Removing and Replacing Field Replaceable Units

ac:uson

CHAPTER 4

Removing and Replacing Field Replaceable Units (FRUs)

Introduction to Removing and Replacing FRUs

4·3

Exploded View System Drawings

4-3

SCan Converter

4·5 4-5 4-5 4-6

Removing Side Cosmetic s Installing Side Cosmetic s Removing the Scan Converter Cover Installing the Scan Converter Cover Removing PCBs (except lOB) Installing PCBs (except lOB) Removing lOB Installing lOB Removing Scan Converter Motherboard Installing Scan Converter Motherboard

4-9 4-]0

Scanner

4-10

the Scanner Cover InstaIling the Scanner Cover Removing Scanner PCBs (except ZDL and ZIP) Installing PCBs (except ZDL and ZIP) Removing ZDL and ZIP Installing ZDL and ZIP Removing Scanner Motherboard (25MB) Installing Scanner Motherboard

4-10 4-10

Power System

Removing the Programmable Power Supply (PPS) Installing the Programmable Power Supply (PPS) Removing the Main Power Supply Installing the Main Power Supply Removing the AC Box Installing the AC Box Removing the Isolation Transformer Installing the Isolation Transformer

1096

Service Manual

4-6 4-7 4-7

4-7 4-8

4-11 4-]2 4-]2 4-13 4-]4 4-]4

4-15 4-]5 4-]5 4-]6 4-]7 4-]7 4-17 4-18 4-18

4-1

Chapter 4 - Removing and Replacing Field Replaceable Units (FRUs)

4-2

Monitor Assembly

4·19

Removing Monitor Installing the Monitor

4-19 4-19

Interface

4-20

Removing Interface Assembly Installing Interface Assembly

4-20 4-21


1096

Inlroduction to Removing and Replacing FRUs

INTRODUCTION TO REMOVING AND REPLACING FRUS The Aspen system design is based on the use of modular, functionally-isolated Printed Circuit Boards (PCBs) and subassemblies known as Field Replaceable Units (FRUs). This modularization greatly simplifies on-site service and repair. In most cases, on-site maintenance is accomplished by removing and repladng the printed drcuit boards (PCBs) or subassemblies. The following procedures in this Chapter describe removal and replacement of FRUsin the Aspen system.

IMPORTANT:

The PCBs used in the Aspen system are highly susceptible to static damage. Always use proper ESD precautions when handling the PCBs and always store them in a static shielded container.

The following pictures Figure 4-1 and 4-2 identify some of the key parts of the Aspen system which will be reffered to throughout the chapter. If you have additional questions, your Acuson Service Representative.

Exploded View System Drawings

1096

Refer to the supplemental system draWings in Appendix A for additional guide to removal and replacement of these and other miscellaneous FRUs not captured in this section. The seven drawings in Appendix A are: •

System Cabling

•

Interface

• • • • •

Disk Box

System Front

•

Casters

Power Supply Bay Scanner Sqm Converter

Service Manual

4·3


4-4

Figure 4-1

Aspen System - Front View

Figure 4-2

Aspen System - Rear View


1096

Scan Converter

SCAN CONVERTER Removing Side Cosmetic s

1

Unplug the system from the wall.

2

Remove left/right air .fiIter (Figure 4-3)

3

Loosen the screw holding the side .

Figure 4-3

Installing Side Cosmetic s

4

Remove left/right cosmetic side by grasping the rear of the side where the filter was installed and rotate (pull) outwards (as shown above in Figure 4-4).

1

To install left/right cosmetic hold the side at a 20-30 degree angle from the side plane of the system, and put the front in first, then rotate the back into position.

2

TIghten the screw holding the side .

3

Install left/ right air filter.

Figure 4-4

1096

Rear Air Filter Removal

Right Cosmetic Side and Screw Location

Service Manual

4-5


Removing the Scan Converter Cover

1

Grasp by Scan Converter cover handles.

2

Slide Scan Converter cover to the left.

3

Lift up to compress gasket at the top of the cover, then pull the bollom of the cover towards you.

Figure 4-5 Scan Converter with Cover

Installing the Scan Converter Cover

1

Grasp by handles.

2

Push top of cover in (away from you) and up. Slide bottom in while maintaining upward pressure. the following: •

All screw heads clear the keyhole slots.

•

The EMl shielding gaskets on the fan plate are properly positioned (not rolled to the top of the fan plate).

•

The EMI gaskets on the lOB plate are installed.

•

The EMl bracket installed.

•

The cover slid to the right to fully engage the keyholes.

•

All screwS fully tightened.

Figure 4-6

4-6

Scan Converter without Cover


1096

Scan Converter

Removing PCBs (except lOB)

IMPORTANT:

1


2

Remove right air filter as described earlier.

3

Remove the right side as described earlier.

4

Remove Scan Converter cover as described earlier.

Observe electrostatic discharge (ESD) precautions. The PCBs used in the Aspen system are highly susceptible to the static damage. Always use ESD precautions when handling the PCBs and always store them in a ESD shielded container. 5

WARNING!

I I

Exercise extreme caution when removing or installing high density ribbon cable connectors. Pins are very fragile and bend quite easily. 6

IMPORTANT:

Installing PCBs (except lOB) IMPORTANT:

Removing lOB

1096

Remove desired PCB(s).

Removal of the RP board requires removal of the EM! bracket mounted to the top left side-wall of the Scan Converter bay (2 screws). 7

IMPORTANT:

Remove ribbon cables (where necessary).

Place PCB(s) in appropriate static J;SD shielded container for storage or shipping.

Observe electrostatic discharge (ESO) precautions. The PCBs used in the Aspen system are highly susceptible to the static damage. Always use ESO precautions when handling the PCBs and always store them in a ESO shielded container. 1

I

Slide PCB into appropriate slot (refer to the DIMAQ workstation board location drawing Fig. 2-18 in Chapter 2).

Ensure that the EMI bracket mounted to the top left side-wall of the Scan Converter bay (2 screws) is installed. 2

Install ribbon cables (where necessary).

3

all PCBs are fully seated and all ribbon cables are correctly routed and fully seated within their connectors.

4

Install Scan Converter cover as described earlier.

5

Install right cosmetic as described earlier.

6

Plug system into the wall and proper operation.

1

Remove the air filter.

2

Remove cosmetic side as described earlier.

3

Remove the Scan Converter cover as described earlier.

4

Remove peripheral cables from rear (Figure 4-7).

5

Remove the power cord bracket (2 screws).

Service Manual

4-7


6

Remove power cord from AC box.

7

Remove cosmetic rear (4 screws).

8

Remove system cables from back (lOB).

9

Remove screws securing lOB sheetmetal cover (]4 screws).

10 Remove the necessary ribbon cables. 11 Remove lOB with it's sheetmetal plate attached. 12 Place lOB in appropriate static ESO shielded container for storage or shipping.

II'

Figure 4-7 View of lOB from the Rear of Aspen System

Installing lOB

4-8

1

Install lOB, with its sheet metal plate attached, in rear slot.

2

Install sheetmetal mounting screws (14 screws).

3

Install system cables.

4

Install rear cosmetic (4 screws).

5

Install peripheral cables.

6

Connect power cord to AC box (make sure it is fully seated).

7

Install the power cord bracket (2 screws).


1096

Scan Converter

8

Connect ribbon cables to lOB.

g

Install Scan Converter cover as described earlier.

10 Install side cosmetic as described earlier. 11 Plug system into the wall and operation.

Removing Scan Converter Motherboard

1

Remove all the Scan Converter PCBs including lOB.

2

Disconnect two (2) ribbon cables from bulkhead.

3

Unplug Fan Assembly Harness.

4

Remove Fan Assembly (2 screws).

5

Disconnect +SV and GND power supply cables from bus bars.

6

Remove all PCBs and transfer them to an appropriate static shielded storage container.

7

Remove bottom PCB card guide (2 screws).

8

Remove top PCB card guide (2 screws).

g

Unplug three power connectors from Scan Converter Motherboard (P32, P33, P34).

Figure 4-8

View of Scan Converter with All PCBs Removed

10 Remove Scan Converter Motherboard mounting screws (20 screws). 11 Remove Scan Converter Motherboard. 12 Place Scan Converter Motherboard in appropriate static shielded

container for s.torage or shipping.

1096

Service Manual

4-9


Installing Scan Converter Motherboard

1

Install Scan Converter Motherboard (align on 3 gUide pins).

2

Install mounting screws (20 screws).

3

Install +5V and GND power supply cables on bus bars.

4

Plug three (3) power connectors (P32, P33, P34) into Scan Converter Motherboard.

5

Install bottom PCB card guide (2 screws).

6

Install top PCB card guide (2 screws).

7

Install Fan Assembly (2 screws).

8

Plug in Fan Harness.

9

Install lOB as described earlier.

10 Install rest of the (Scan Converter) PCBs as described earlier. 11 Install Scan Converter cover as described earlier. 12 Install side cosmetic as described earlier. 13 Plug system into the wall and proper operation.

SCANNER IMPORTANT:

Removing the Scanner Cover

Installing the Scanner Cover

4·10

I

Reference Scanner exploded view and System Front exploded view diagrams (Appendix A Figures A-5 and A-7l. 1

Unplug the system.

2

Remove the left airiilter and left cosmetic as described earlier.

3

Remove the Scanner analog cable 09) as shown in Figure 4-9.

4

Loosen Scanner cover mounting screws (18 screws).

5

Grasp by sCanner cover handles.

6

Slide Scanner cover up and pull towards you.

7

Lift up to compress and then pull the bottom of the cover towards you.

1

Grasp by the handles.

2

Place cover onto the mounting screws.

3

Slide cover down. the following: •

All screw heads clear the keyhole slots.

•.

The cover slides to the bottom to fully engage the keyholes.

•

All screws are fully tightened.


1096

Scanner

Removing Scanner PCBs (except ZOL and ZIP)

1


2

Remove left cosmetic as described earlier.

3

Disconnect Scanner Analog cable (j9) from DBL. Requires small standard (IIat) screwdriver (Figure 4-9).

Figure 4-9

Figure 4-10

1096

View of Scanner with Cover On

View·of Scanner without Cover

Service Manual

4-11


4 IMPORTANT:

I

Remove Scanner Cover as described earlier.

Observe electrostatic discharge (ESD) precautions. 5

Remove the Scanner board brackets by pressing down on the metal next to the top of the bracket and then pulling the top of the bracket out towards you.

6

Remove desired PCB(s). NOTE: For the ZDT, remove 7 cables (j4, )5, J6, )9, )10, )11, JI2), and undo thumb screws (4 thumb screws). You may remove the peripheral bay to get access to these connectors.

7 IMPORTANT:

I

Installing PCBs (except ZDL and ZIP)

Removing ZDL and ZIP

IMPORTANT:

I

Observe

discharge (£SOl precautions.

1

Slide PCBs into appropriate slots (refer to the Scanner board location drawing in Chapter 2).

2

Install cables (j4, J5, )6, J9, )10,)11, J12 on ZDT, and VDT to IFD).

3

all PCBs are fully seated and all cables are correctly routed and fully seated within their connectors.

4

Install Scanner board brackets by placing the bottom in the slit in the metal above the DBL and then pressing the top of the bracket towards the slit in the metal below the ZDT_

5

Run your hand along the bracket from bottoms up to the top to align the PCBs into the bracket.

6

Install Scanner cover as described earlier.

7

Connect Scanner Analog cable (j9) to DBL. Requires small standard (sloi) screwdriver.

8

Install left cosmetic as described earlier

9


1


2

Remove right and left cosmetic s as described earlier.

3

Remove storage compartment on Radiology systems Or small cosmetic on Cardiology system (2 screws) just below the keyboard and ECG .

4

Remove front cosmetic (4 screws).

If MP connector Transducer capability is not available on your system then skip step 5 and 7.

5

4-12

Place PCB(s) in appropriate static shielded container for storage or shipping.

Remove the shutter door cosmetic bezel (If system has ZIP board). Squeeze and pull off the lower step cone. Remove the Shutter door bezel (2 screws).

Acuson Aspen Ultrasound Syslem

1096

Scanner

6 IMPORTANT:

I

Observe electrostatic discharge (ESD) precautions. 7

IMPORTANT:

Remove DL /MP cosmetic (4 screws).

Remove the Shutter door assembly by removing the 4 captive screws at the top and the bottom of the shutter door assembly.

I

As you remove Shutter door assembly from the system, be careful not to bend the Hot make switch lever connected to the lower door lock. 8

Remove screws from DL/MP sheetmetal cover (4 screws on ZDL and 4 flathead screw on ZIP).

9

Remove sheetmetal enclosure (] 7 screws and 5 kepnuts).

10 Remove ZDL and / or ZIP. 11 Place in appropriate static shielded container for storage or

shipping. Installing ZOL and ZIP IMPORTANT:

I

Observe electrostatic discharge (ESDl precautions. 1

IMPORTANT:

Install ZDL and / or ZIP.

Ensure that the 2 alignment pins on the left top and right bottom of the MP Connector spacer (on the ZIP) aligns with the holes in the DL/MP sheetmetal cover. If this is not aligned properly MPTransducers may be difficult to install and may not function properly. 2

Install the DL/MP sheetmetal cover (]7 screws and 5 kepnuts).

3

Install mounting screws (4 screws on ZDL and 4 flathead screw on ZIP).

4

Install shutter door assembly (4 captive screws) using a standard (flat) screwdriver.

S

Install DL cosmetic (4 screws).

6

Install shutter door cosmetic bezel (:i. screws).

7

Install front cosmetic (4 screws).

8

Install storage compartment or the small cosmetic

9

Install left and right cosmetic s as described earlier

10 Plug system into the wall and proper operation.

1096

Service Manual

4-13


Removing Scanner Motherboard (ZSMS)

Installing Scanner Motherboard

4-14

1

Remove the Scanner PCBs including the ZDL and ZIP as described earlier.

2

Remove Scanner card guide assembly (15 screws).

3

Disconnect 3 power connectors (J4, )1, )2) from backside of 25MB (located in power supply bay).

4

Disconnect Scanner Digital power supply harness (j3) from rear of 25MB.

5

Remove 25MB mounting screws 00 screws).

6

Remove 25MB.

1

Install 25MB (align on guide pins).

2


3

Install Scanner card guide assembly 05 screws).

4

Connect Scanner Digital power supply harness (J3) to rear of 25MB.

5

Connect 3 power connectors (j1, )2, )4) to backside of 25MB.

6

Install ZDL and ZIP (see above).

7

Install rest of the Scanner PCBs (see above).

S



t096

Power Subsystem

POWER SUBSYSTEM WARNING!

IMPORTANT: -

Removing the Programmable Power Supply (PPS)

If this procedure is done quickly following shut down of the system, there is a possibility of a residual charge on the high voltage bus. Do not touch the s on the back of the PPS.

I

Reference Power Supply Bay exploded view diagram (Appendix A Figure A-4). ,

Unplug system from the waiL

2

Wait two minutes.

3

Remove right cosmetic as described earlier.

4

Disconnect )19 and )20 from the Main Power supply.

5

Remove PPS cable bracket (2 screws).

6

Disconnect )3 fan harness, and OVP Box)1 connector (Figure 4-11 ).

Figure 4-11

Installing the Programmable Power Supply (PPS)

1096

View of PPS and It's Location

7

Disconnect )3 fan harness, and OVP Box )1 connector

8

Remove PPS.

9

To remove OVP Box from PPS, remove mounting screw, and slide sideways.

,

Install OVP Box onto PPS.

2

Set PPS on mounting bracket.

3

Connect )3 fan harness, and OVP Box )1.

4

Install PPS cable bracket (2 screws).

Service Manual

4-15


Removing the Main Power Supply

5

Connect )19 and J20 to Main Power supply.

6

Install right cosmetic side as described earlier.Plug system into the wall and proper operation.

1

Remove the Programmable Power Supply as described earlier.

2

Remove PPS mounting bracket (3 screws).

3

Remove lower Power Supply mounting screws (2 screws).

Figure 4-12 View of Main Power Supply

4-16

4

Disconnect J6, J7A and J7B from the side of the power supply (facing) and J8, J13, J14, J15, +5 SC and SC RTN from the top of the power supply (Figure 4-12).

5

Remove upper power supply mounting screws (2 screws).

6

Rotate power supply counter-clockwise (away from the bulkhead/ backwaU) and disconnect J17 and J18 from the front of the power supply.

7

Remove power supply.


1096

Power Subsystem

Installing the Main Power Supply

Removing the ACBox

1

Place Power Supply in bay with the front of supply rotated slightly away from bulkhead.

2

Connect ]17 and J18.

3

Install upper and lower Power Supply mounting screws (4 screws).

4

Connect J8, J13, ]14, J15, +5 SC and SC RTN to the top of the Power Supply and J6, J7 A and J7B to the side (facing).

5

Install PPS mounting bracket (3 screws).

6

Install the Programmable Power Supply as described earlier.

1

Unplug the system from the wall and wait for 2 minutes.

2

Remove right and left cosmetic side s.

3

Disconnect peripheral cables from lOB (rear of system).

4

Remover power cord bracket (2 screws).

5

Remove power cord from AC Box. -."

_.

./

Screws

•• •• Figure 4-13

Installing the ACBox

1096

AC Box

6

Disconnect all peripheral power cords from the AC Box isolated accessory outlets.

7

Remove rear cosmetic (4 screws).

8

Remove AC Box (2 screws; Figure 4-13).

1

Install AC Box (2 screws).

2

Install rear cosmetic (4 screws).

3

Plug power cord into AC Box (make sure it is fully seated).

4

Install power cord bracket (2 screws).

5

Connect peripheral power cables AC Box.

Service Manual

4-17

Chapter 4 . Removing and Replacing Field Replaceable Units (FRUs)

Removing the Isolation Transformer

6

Connect peripheral cables to lOB (rear of system).

7

Install right and left cosmetic side s as described earlier.

8


1

Unplug the system from the wall and wait for 2 minutes.

2

Remove left cosmetic side .

Figure 4-14

WARNING!

Isolation Transformer

I The Isolation Transformer Box is heavy (more than 25 Ibs). Use

something to it (e.g., a large telephone directory) while removing the screws.

Installing the Isolation Transformer

3

Remove the Isolation Transformer Box mounting screws (2) while ing the assembly. (The Box will drop when last screw is removed; Figure 4-14.)

4

Disconnect two wiring harnesses.

1

Connect two wiring harnesses.

2

Slide transformer assembly into frame making sure that the rear lip is resting on the sheetrnetal bends of the receiving structure.

3 . Install two mounting screws while ing assembly with the free hand (2 screws).

4-18

4

Install left cosmetic side .

5



1096

Monitor Assembly

MONITOR ASSEMBLY

····11111111111·11111111111···· -y--- -----.-.._-- --- _.-- --. -_._------_...

A

WARNING!

Removing Monitor IMPORTANT:

Installing the Monitor

1096

Figure 4-15

I

B

Monitor Assembly Screw and Connector Locations

The monitor weighs in excess of 40 pounds. Get assistance if you have any doubt about your ability to lift and carry the monitor. 1


I

Set the tilt/swivel such that the base of the monitor is horizontal. Lock it in place. 2

Remove monitor rear cover (2 screws - use short phillips screwdriver) as shown in Figure 4-15A.

3

Unplug monitor AC power PI connector.

4

Disconnect 3 cables: J2 monitor softkeys, monitor video and monitor speakers (all require small standard screwdriver - 2 screws each).

S

Remove grounding strap.

6

Remove monitor mounting screws (2 screws) as shown in the Figure 4-15B.

7

Stand at the front of the system. Wrap arms around the monitor, grasp the lower back of the monitor firmly and pull towards you, and lift it off the system.

1

that all cables are silting flatly before installing the monitor.

2

Align the boltom of the monitor with the tilt/swivel mechanism (see the 4 alignment points in Figure 4-16).

3

Push straight back until the monitor seats on the tilt/swivel.

4


S

Install 2 ground cables (l screw)

Service Manual

4-19

Chapter 4 - Removing and Replacing Fietd Replaceable Units (FRUs)

6

Connect 3 cables: J2 monitor softkeys, monitor video and monitor speakers (all require small standard screwdriver - 2 screws each).

7

Plug in monitor AC power PI connector.

S

Install rear cover (2 screws).

9

Plug system into the wall and proper operation..

Figure 4-16

INTERFACE IMPORTANT:

Removing Interface Assembly

4-20

Monitor Tut/Swivel Assy with Monitor Removed

I

Reference Interface exploded view diagram (Appendix A Figure A-2). 1


2

Remove the left and right air filters and side cosmetic s as described earlier.

3

Remove disk bay bezel by removing the screw under the Aspen nameplate.

4

Remove lower handle cap (5 screws).

5

Remove lower Interface (ill) mounting screws (2 9/64" hex screws on each side).

6

Remove Cine/Freeze wheel and a small screw underneath.


1096

Interlace

Figure 4-17 Interface and Mounting Screw Locations 7

Slowly lift off the front of the VI i:>ezel and disconnect the Selector switch ribbon cable. The bezel can now be completely removed.Lift trackball and remove the trackball/UI cable.

8

Remove VI mounting screws (6 screws).

9

Lift trackball and remove the trackball/VI cable.

10 Stand the VI assy on the end so that it is resting on J1 and the PCB assys are facing you. 11 Disconnect RTB/VI cable from J21 on the VI . 12 Disconnect VIC power harness (J6). 13 Disconnect VIC softkey cable (J8). 14 Disconnect VIC/lOB cable (JS). 15 Pull assembly forward. Disconnect harness J7 cable (VIC/ AP/ QWL/PSW harness; use small standard flat screwdriver to remove jack screws).

Installing Interface Assembly

1096

1

Rest VI assembly on the handle casting.

2

Connect J7 cable.

3

Stand the VI assy on the end so that it is resting on Jl and the PCBs assys are facing you.

4

Connect VIC/lOB cable (JS).

5

Connect UIC softkey cable(J8).

6

Connect VIC power harness (J6).

7

Connect RTB/VIC cable to J21 on the VI .

8

Connect trackball/VIC cable to the trackball.

Service Manual

4-21


Figure 4-18 9

Interface Assembly without VI Bezel

Mount VI assembly to base (6 screws).

10 Lay UJ bezel over VI assembly. 11 Connect select switch cable while holding the front of the UJ bezel. 12 Install lower UJ assembly mounting screws (4 hex screws). 13 Install small screw and the CINE/ Freeze knob. 14 Install lower handle cap (5 screws). 15 Install Disc bay Bezel. Install screw and the jewel. 16 Install right and left side s. 17 Plug system into the wall and proper operation.

4·22


7096

Aspen™ lJltrasound System Service Manual

Troubleshooting

cc:uson

CHAPTER 5

Troubleshooting

1096

System Troubleshooting

5-2

Technical Assistance

5-2

Symptom Type

5·3

Causes of Failures

54

Quick Tips

5-5

Common Symptoms and Fixes

5-6

General Approach No Power Video Problems Function or Format Problems System Lock-up Problems Image Quality Problems Error Messages Scanner Troubleshooting Scan Converter Troubleshooting

5-<> 5-6 5-16 5-17 5-18 5-19 5-20 5-20 5-22

Service Manual

5-1

Chapter 5 - Troubleshooting

SYSTEM TROUBLESHOOTING Acuson systems have an exceptional record of dependability and a customer service network ready to respond to your individual needs. The purpose of this section is to familiarize service personnel with the basic troubleshooting of the Aspen ultrasound system. Service personnel are expected to be familiar with the use of basic test equipment (DVM, oscilloscope, etc.) as well as basic ultrasound theory. IMPORTANT:

This manual is intended for use by trained service personnel. There are lethal voltages inside the Aspen ultrasound system. Bodily harm and possibly death as well as damage to the system may result from untrained individuals opening the system.

TECHNICAL ASSISTANCE For any service related questions or technical assistance or for information on Acuson's service offerings, call the phone number listed in the Customer Menu or, from within the United States, call the North American Service and Technical Assistance Team at 1 -800-9-ACUSON 0-800-922-8766.)

The following information may be required when you call Acuson for technical assistance or submit a problem report:

5·2

•

Name and phone number of the person who found or experienced the problem

•

System type and serial number

•

Brief description of problem

•

Description of expected performance


1096

Symptom Type

SYMPTOM TYPE Failures on the Aspen system can be broken down into five main symptom types as follows: •

No power

•

Functionality or image format problems

•

Locked-up systems

•

Image quality problems

•

Error messages

Following are the general characteristics of each symptom type. Table 5-1

Symptoms Types Definition

Symptom Type

Definition

No power

The system does notlurn on or turns itself off. There are no fans or lights. There are no raster lines on the monitor when the brightness and contrast are turned up.

Image format or functional problems

The system is still accepting keyboard commands but the alphanumeric, graphic, or image format is missing, incorrect, or displaced.

Hung or Locked systems

The system no longer accepts keyboard commands. You may still be able get an image in the image area. These failures usually happen as you go from one mode into another, for instance, going into or out of color imaging.


The image format is correct but there is a problem with the quality ofthe ultrasound signal corning out ofthe Scanner. Examples could be: the image is defocused, poor penetration, channel dropouts, or excessive noise.

Error messages

The system responds with an error message as the result of a specific key being pressed or powers on with an error message. This implies that some operating condition of the system or peripherals is being violated.

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Service Manual

5-3


Causes of Failures Table 5-2

Here are some basic guidelines for troubleshooting the different symptom types.

Causes of Failures

Symptom Type

Causes

No power

Typical power problems happen because: power is not coming from the wall, the circuil breakers are off or, there is a failure in the power-on circuitry.

Functional or image fonnat problems

These are cases where the microprocessors are communicating, but the boards themselves are not able to carry out the imaging or fonnatting instructions.

Hung or locked systems

System hangs ups or lock ups are typically caused by a breakdown in microprocessor communications. They will typically happen as you are going from one mode into another, as multiple microprocessors try to communicate.


Image quality problems usually relate to a failure in the Scanner subsystem or the AID section of the Scan Converter within the DIMAQ workstation. Maybe the transmitters are not focusing correctly, or the receive timing delays are incorrect.

Error messages

Error messages can happen for any number of reasons. They could be anything from a printer out of paper, to illegal transducer use.

5-4


1096

Quick Tips

QUICK TIPS The following aTe some useful tips which may help in quick diagnosis of certain typical failures. Table 5-3

Quick lips

Symptom Type

Quick Tips

NopoweT

•

The assemblies involved are: the VIC, lOB, DC poweT supply, and any of the connecting cables.

•

Is the system plugged into a functional wall outlet?

•

Does anotheT instrument wOTk in the same wall outlet?

•

Has the plug come out of the system poweT cord bTacket at the 10weT back of the system?

•

Are the main breakers on?

•

If only MOnitOT and peripherals aTe getting poweT then check the TTansformeT circuit breakeT.

•

Are you pTessing the correct poweT-on button? The power switch is located unda and to the left of the monitor.

•

Is a PoweT supply errOT indicated on the lOB's 7-segment LED display.

Image format OT functional pToblems

The boaTds involved will depend on the modality, e.g, 2-D, M-mode, Spectrnl OT ColoT DoppleT OT Aegis.

Hung OT locked systems

The boaTds involved aTe: the mc, lOB, SVC, ZS, FEC, DSP,RP, OTWFP.

Image quality pToblems

The boaTds involved aTe: the XMT, XDY, ZDL, ZIP, RCV, APD, MXK, SDL, DCC, VDT, IFD, DBL, AQP, RP, and COM.

ErroT messages

Check the Usa Manual and the Transduca and Periphaal Manual fOT the meaning of errOT messages.

1096

Servica Manual

5-5


COMMON SYMPTOMS AND FIXES General Approach

Table 5-4

•

Note the event(s) that caused the failure

•

Identify the assemblies involved

•

Use any available tools to isolate between assemblies

•

Replace assemblies as needed until the problem is corrected

Normal Operations

Evidence 01 Normal System Operation

Conclusion

System images, fans are on, decimal point on lOB display is illuminated, but no other segments are illuminated.

The power system is most likely functioning properly.

All modalities function as described in the manual.

All subsystems are functioning properly.

All peripherals are functioning as described in the manual.

The peripherals and the system's Input/ Output interlace is functioning properly.

No Power

Power supply failures can cause a variety of failure symptoms throughout the system and it may not be immediately obvious that a faulty power supply is to blame. For this reason, it is prudent to power supplies when troubleshooting any failure. The follOWing Table provides some quick checks when the symptom is no power. ERROR DISPLAY O.

8 lOBASE-T {

LEOS

Figure 5-1

IMPORTANT:

,. 2.

3. 4. 5. 6

.

7.

v STANDBY ON POWER FAIL WARNING HODe OVERCURRENT HODe OVERCURRENT HODe OVER VOLTAGE CODe OVERCURRENT CODe OVERVOLTAGE

SCNR FAN FAIL

SYSTEM OVERTEMP

lOB 7-Segment Error Display and Ethernet LEOs

If a power subsystem failure occurs which latches an error code on the 7- segment display on the lOB board, the system's main circuit breaker must be turned off for 30-60 seconds in order to clear the error.


1096


Table 5-5

Power Supply Troubleshooting Guide

Symptom

Possible Cause

Remedy

System will not tum on, fans are not turning, Keyboard lights are not illuminated.

Rear circuit breaker is not turned on.

Check to see that the main breaker is in the "up" position.

No AC input power.

Check wall outlet; When the main circuit breaker on the rear is turned on and valid AC power is present, the decimal point LED on the lOB display should be illuminated continuously.

If the main circuit breaker is on, AC Check the lOB to Main Power

power is present, and the decimal point on the lOB display is not continuously illuminated, then standby power is not being generated by the Main power supply. The decimal point on the lOB display is powered off of Vstandby, (-5VDCl.

Supply cable, 10B-J7. Check to see if the AC power cord is fully plugged into the AC Box receptacle. Check to see if the power cord (internal) is plugged into the AC Box. Check to see if AC power is reaching the Main power supply. Check and replace Main Power Supply. Check and replace lOB. Check and replace VIC, or power switch.

System tries to tum on for an instant but then turns off and the decimal point remains continuously illuminated.

Look for the error code on the lOB display. Error codes are discussed in Table 5--7. Sometimes the error occurs SO quickly that the system is off before the information on the error is captured. Turnoff the main circuit breaker for 30 seconds, then try to tum the system on again.

1096

Service Manual

5-7


Table 5-5

Power Supply Troubleshooting Guide (Continued)

Symptom

Possible Cause

Remedy

(Contd.) System will not turn on, fans are not turning, Keyboard lights are not illuminated.

System may already be in a state where an error has latched the power supply off, even if no error codes are displayed on the lOB.

Check for lOB displayed error codes. Turn off the main circuit breaker for 30 seconds and try again. Error codes are discussed below.

If lOB decimal point is not illuminated:

Check standby power supply to the lOB.

Power On/Standby switch problem,

Check to see if switch is "clicking" from one position to another.

UlC (keyboard) to lOB cable,

Check to see if cable is plugged in. Check for bent pins.

UlC (keyboard problem),

Check and replace.

lOB problem,

Check and replace.

Main Power Supply problem,

Check and replace.

Faulty cable(s) as mentioned above. Check and replace.

Table 5-6 System Powers Itself Down Symptom

Possible Cause

Ramedy

The system turns off unexpectedly, fans off, all lights off, etc.

Power system errOr condition has occurred.

Check for error codes displayed on the lOB.

The system turns off 20 to 30 seconds after being turned on.

Over temperature condition has occurred.

Ensure that the side clearance requinements are met.

Fan problem.

Blocked, stopped, or unplugged fan, see error code 5, Or 6, below.

System shuts down with no error code.

This can happen when a transient

See sections below.

Start examining error codes 1 to 4, happens too quickly to be captured. below.

System shuts down with an Intennitlent AC power: Black or Error Code "0" displayed brownout. (I.e., Main Power Supply Intennitlent AC main power Fail Warning). cord(s).

5-8

Waft for AC line to be stable, and within specifications. Check to see all cables, especially the external power cord, are fully seated.

Acuson Aspen Ultr&sound System

1096


Table 5-6

System Powers Itself Down (Continued) Remedy

Symptom

Possible Cause

Svstem shuts down with an Error Code ''1'' displayed (i.e., Main power supply HODC over current)

One or more of the DC power Measure resistance of appropriate supplies is shorted to ground, or to power supplies with the system AC another DC voltage, see power disconnected. explanation of error codes, below.

Svstem shuts down with an Error Code "2" displayed (i.e., Main Power Supply HODC over voltage.

One or more PCB is draWing too much current.

Unplug half of the boards to isolate, then continue redUcing by half until the faulty board(s) are isolated.

The PPS may have a short to ground or the +300V which feeds the PPS may be getting loaded down. This condition normally takes a few seconds to develop

Unplug the PPS connection, and try the system again.

lOB fault.

Replace.

One of the +SV digital power supplies is being "margined" to a voltage above -S.BV by the DAC on the lOB

Could be a hardware or a software problem. Unplug the Scanner digital power harness (the 24 pin connector on the Scanner motherboard). This will help isolate whether it's the Scanner digital margin control or something else.

Two power supplies are shorted together.

Start by unplugging Main power supply-JB, DC -J7A, and DC-JIS, and DC -JI4, one at a time, to help isolate the problem.

One or more PCBs are drawing too Unplug half of the boards to isolate, much current. then continue reducing by half until the faulty board(s) are isolated.

1096

Main Power Supply problem.

Replace the Main Power Supply.

lOB fault.

Eeplace lOB.

Service Manual

Chapter 5 . Troubleshooting

Table 5-6 System Powers Itself Down (Continued) Remedy

Symptom

Possible Cause

System shuts down with an Error Code "3" displayed (i.e., Main power supply CODC over current).

One or more of the DC power Measure resistance of appropriate supplies is shorted to ground, or to power supplies with the system AC another DC voltage. See power disconnected. explanation of error codes in Table 5-7. One, or more PC analog boards is drawing too much current.

Try unplugging PCB, one at a time, such as: VI (keyboard), Audio Processor (ZAP), MSEboard, ECG/ Physio modules, DlMAQ Workstation video boards, Scanner analog boards, Try unplugging the following from the Main pOwer Supply: JB, J7A, J7B, and J14, one at a time, to help isolate the problem,

lOB fault. System shuts down with an One of the "clean" DC outputs of Error Code "4" displayed the Main Power Supply is over(i.e., Main power supply voltage. CODC over voltage). Faulty Main Power Supply.

Replace lOB, Try unplugging the following from the Main power supply: JB, J7A, J7B, and J14, one at a time, to help isolate the problem, Replace.

One or more PCBs are drawing too Try unplugging PCB, one at a time, much current. such as: VI (keyboard), Audio Processor (ZAP), MSEboard, . ECG/ Physio modules, DlMAQ Workstation video boards, Scanner analog boards. lOB fault.

5·10

Replace lOB.


1096


Table 5-6 Symptom

System Powers Itself Down (Continued) Possible Cause

Remedy

System shuts down with an Scanner exhaust fanes) are: Error Code "5" displayed • stuck, or running too slow, (i.e., Scanner fan fam o unplugged, o

not getting DC voltage.

lOB fault.

Check connection, including the 10B-J8 connection. Check with a voltmeter. It should be 7.5 to 16 VDC on the red and black leads (the red lead is positive). Replace lOB.

System shuts down with an Scan Converter exhaust fan(s), or Error Code "6" displayed PPS, or disk drive bay fans are: (i.e., Scan Converter, PPS, • stuck, or running: too slow, or disk drive fan fam o unplugged, o

Check for obstruction.

o

Check for obstruction.

o

Check connection, including thel0B-J8 conJ;lection.

o

Check with a voltmeter. It should bE! 7.5 to 16 VDC on the red and black leads (the red lead is positive).

o

The PPS ana disk drive fans are powered by +12 peripheral, .not the variable fan power supply.

not getting DC voltage.

lOB fault.

Replace lOB. Cool down the system. Check for the required side and back clearance requirements and blocked filters.

System shuts down with an System is over 65°C. Error Code "7" displayed (i.e., System overtemperature)

One or both of the thermal sensors Check and replace. is unplugged or defective.

Main-JS connection is loose or

Check this and related cables.

missin.

ERROR DISPLAY O. 1.

B 10BASE-T LEDS

Figure 5-2

1096

r

L

2.

3. 4. 5. 6. 7.

V STANDBY ON POWER FAIL WARNING HODC OVERCURRENT HODC OVERCURRENT HODC OVER VOLTAGE CODC OVERCURRENT CODC OVER VOLTAGE SCNR FAN FAIL SYSTEM OVERTEMP

lOB 7-Segment Error Codes and Ethernet LEOs

Service Manual

5-11


Table 5-7

JOB 7-Segmenl Error Codes and Ethernet LEOs

Error Codes

Possible Causes

Explanations

Error Code "0"

AC Power Fail Warning This indicates the AC power has failed (generated by the Main power supply). or momentarily dipped below -90 VAC for 115 VAC systems -207 VAC for 230 VAC systems System operation can only resume after AC power is restored and the turns on the system.

Error Code ''1''

High Output DC Over Current. Generated by the Main power supply after it has encountered an output current that is higher than allowed on one or more of the following DC outputs:

Error Code "2"

+5V Scan Converter,

Powers the digital circuitry in Converter.

+5V Scanner Digital,

Powers mostly digital circuitry in the Scanner.

+12V Fan (-8 to 16 VDC, dependent on system temperature),

Powers the three Scanner fans, and the two Scan Converter fans.

+300VDC.

Powers the Programmable Power Supply.

Scan

High Output DC Over Voltage. Generated by the Main power supply after it has encountered an output voltage that is higher than allowed on one or more of the following DC outputs:

5-12

+5V Scan Converter,

Powers the digital circuitry in the Scan Converter.

+5V Scanner Digital,

Powers mostly digital circuitry in the Scanner.

+12V Fan (-8 to 16 VDC, dependent on system temperature),

Powers the three Scanner fans, and the two Scan Converter fans.

+12V Peripheral,

Powers the disk drives, the PPS and the disk drive bay fans.

+12V Relay,

Powers the AC power relay on the primary side of the isolation transformer.

300VDC.

Powers the Pragrammable Power Supply.


1096


Table 5-7

lOB 7-Segment Error Codes and Ethernet LEOs (Continued)

Error Codes

Possible Causes

Explanations

Error Code "3"

Clean Output DC Over Current. Generated by the Main Power Supply after it has encountered an output current that is higher than allowed on one or more of the following DC outputs: +5\1 Analog (Scanner),

Powers various analog circuits in the Scanner.

+75\1 (Scanner),


Error Code"4"

-75 (Scanner),


+15\1 (Scanner),


-15\1 (Scanner),


+12\1 (Scan Converter),

Powers video and other circuitry in the DIMAQ Workstation.

-12\1 (Scan Converter).


Clean Output DC Over Voltage. Generated by the Main Power Supply after it has encountered an output voltage that is higher than allowed on one or more of the following DC outputs:

1096

+5V Analog (Scanner),


+75V (Scanner),


-75 (Scanner),


+15\1 (Scanner),


-15\1 (Scanner),


+12\1 (Scan Converter),

Powers video and other circuitry in the DlMAQ Workstation.

-12\1 (Scan Converter).


Service Manual

5-13


Table 5-7

lOB 7-Segment Error Codes and Ethernet LEOs (Continued)

Error Codes

Possible Causes

Explanations

Error Code "5"

Scanner Fan Fail.

This can occur if one or more of the three Scanner fans is:

Upon power up this error is not generated for the first 20 seconds.

stuck or locked (not turning), running extra slow, unplugged, Also the cable on the 10B-j8 could be unplugged.

Error Code "6"

Scan Converter Fan Fail. Upon power up this error is not generated for the first 20 seconds.

This can occur if one or more of the two Scan Converter fans is: stuck or locked (not turning), running extra slow, unplugged, Also the cable on the 10B-j8 could be unplugged.

Other system fans can activate this error code as well.

The PPS fan is stuck, or unplugged, The disk drive bay fan is stuck or unplugged, or if the 10B-j8 cable, or other internal cables are unplugged,

Error Code "7"

System over-temperature

This can occur if: The system is very hot in either the Scanner card cage area or the Scan Converter area (i.e., above 65·C). One or both of the temperature sensors located in the above areas are unplugged. The 10B-j8 cable is unplugged. One or both of the temperature sensors are defective.

5-14


1096


Video Problems Table 5-8 Symptom

Video Failures Possible Cause

Remedy

System appears to be Monitor brightness and ! or contrast Adjust brightness and contrast to .operating normally, except controls are turned all the way proper settings. down. the system monitor appears to be off, not illuminated. System monitor video cable is not Check cable. plugged in, 108-)12 to the monitor. System video is not being properly Activate the brightness control to see if CRT is lighting up at full generated. brightness and contrasl.lf there is a brightness then the monitor is gelling power but not getting proper video. AC power to the monitor is not present.

Check the circuit breaker on the Isolation Transformer Box. The circuit breaker is accessible, at the rear of the system, through a hole in the isolation transformer sheet metal located behind the rear right caster, 6" or so above the floor. It is tripped when it's in the "out" position. Push to reset it if necessary.

1096

Isolation transformer circuit breakers are tripped.

Reset circuit breakers.

Isolation Transformer Box is unplugged.

Check connections.

Power harness at Main power supply-J20 is unplugged.

Check connections.

AC Power connection to the monitor is unplugged.

Check connections.

Monitor has failed.

Replace monitor.

Service Manual

5-15


Function or Format Problems

Table5-9

The following table provides basic guidelines to troubleshooting format or functional problems.

Format or Functional Problems

If

Then

The controis do not work.

Run the interface Tests. Refer to Chapter 7, Service Diagnostics.

There is no image in the image area.

It could be any of the Scanner boards or the CDM, RP, AQP or SVc. Also, c/leck to insure that a transducer is connected properly.

There are no Doppler data in the It could be the DAQ, DSP, RP, CDM, SVC or cables. spectral trace BUT there is a B-mode image. There are no Color data in the CD box BUT there is a B-mode image.

It could be the DAQ, FEe. FEB, CRP, SVC or cables.

The image is misplaced.

It could be the CDM, DSP or SVc.

The Color data is misplaced.

It could be the CRP or SVc.

The Doppler data is misplaced.

It could be the CDM or SVc.

There are no graphics in 2D.

It could be the RP or SVc.

There' are no graphics in Doppler.

It could be the WFP or SVc.

There is missing or misplaced Physio information.

It could be the ECG Module, WFP, SVC or the cables.

The peripherals do not function. The system or peripherals may not be configured correctly. Press CODE-SETUP and refer to the Aspen Ultrasound System MJJnUJII for configuratiol) information. It could be the lOB, the cables or the peripheral.

You can not store and retrieve images.

5-16

It could be the MO drive, HD, the DeI/IPG, the lOB or the SVc.


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System Lock-Up Problems

Table 5-10

The prohlems.

tahle provides basic guidelines to system lock-up

System Lock-up Problems

If

Then

The system never gets into imaging mode.

It could be the SVC, lOB or the power supplies.

The system hangs only with some transducers.

Maybe the configuration is wrong. Press CODE-SETUP and refer to the AspCl1 Ultrasound System Manual for configuration infonnation.

The system only fails in B-mode. It could be the ZS, ZDT, AQP or SVc. The system fails only in Spectral It could be the DAQ, DSP, or WFP. Doppler mode. The system fails only in Color Doppler mode.

It could be the DAQ, FEC, ZFEB, or CRP.

The system locks up when trying The system or its peripherals may be not configured correctly. Press CODE-SETUP and refer to the Aspen Ultrasound System to access peripherals. Manual for configuration information.

1096

Service Manual

5-17

Chapter 5 - Traubleshooting

Image Quality Problems

Table 5-1]

Failures of Scanner or Scan Converter in the DIMAQ Workstation boards can result in image quality problems. The following is a general overview of Image Quality troubleshooting.

Image Quality Problems

Problem

Possible Causes

Possible Fixes

Poor quality in any of the imaging modes.

Current application is not consistent with procedure being performed.

Change to correct application.

The operator is new to the system.

The image may not be optimized. the Acuson sales office for advice on Aspen image optimization.

Poor video output.

Refer to Chapter 6, Service Diagnostics and display the SMPTE test pattern. If there is a video problem, it is probably the lOB, VPB,orSVC.

Bad Monitor Convergence.

Refer to Chapter 6, Service Diagnostics and display the convergence test pattern. Replace the monitor as necessary.

Artifacts in the image area.

Slowly slide the probe across an ultrasoimd phantom. Look for dark areas in the image that do not move with the rest of the image. If artifacts are evident, replace Scanner boards or AQP, RP or COM in Scan Converter until the problem goes away.

Poor B-mode quality.

Poor image quality in only Spectral Doppler boards. Spectral Doppler.

It could be the DAQ, DSP, or WFP.

Poor image quality in only Color Doppler boards. Color Doppler.

It could be the DAQ, FEC, FEB, or CRP.

Noise in the image.

Noise in the Scanner subsystem.

Replace Scanner boards as needed.

Noise in the power supply.

Use an oscilloscope to look for noise on the power supplies. Replace as needed.

EMI coming from external sources. This is the most likely cause. Turn off lights and other equipment in the area to see if that solves the problem. Isolate the system as needed. Poor quality from stored images.

5-18

Internal Aegis boards.

It could be the DCI/JPG.


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Table 5-11

Image Quality Problems (Continued)

Problem

Possible Causes

Possible Fixes

Poorqualitl' video or audio Bad (or old) video tape. on VCR plavback

Error Messages

Try recording and playback with a new video tape.

Bad VCR.

Try a new VCR.

Bad cable assembly.

Try a new cables.

Bad video playback circuitry.

It could be the lOB, SVC or the VPB.

The following table proVides basic guidelines to troubleshooting certain error message conditions.

Table 5-12 Error Messages Then

Check

If

For power-on errors

The message indicates a failure Replace the failing assembly. of an assembly.

For the activity that caused the It happened when accessing a message peripheral. There were no external

interfaces.

Scanner Troubleshooting

Refer to the peripheral manufacturers manual for more information. Refer to the Aspen Ultrasound System Manual for more information.

When troubleshooting Scanner operational problems, it is valuable to think of the Scanner in three sections. . •

Channel Circuitry

•

Analog Processing

•

Digital Control

This will allow you to focus your troubleshooting efforts on a reduced set of boards and similar techniques may be used on each class of circuit board. Channel Circuitry

This includes transmission and receive cycles. The concerned Scanner boards are: XMT, RCV, SDL, APD XDY, MXK,ZDL, DBL

This group includes the beamformer and beamformer driver boards. Failures of these boards may result in defects localized at a specific channel or channels. Typically these defects are most obvious with linear transducers. The problem is obvious close to the transducer and becomes less distinct as you move deeper. To troubleshoot problems of this type, try swapping the boards associated with the problem channels to another location. When the defect moves, you have identified the defective assembly.

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Service Manual

5-19

Chapter 5 - Troubleshoo/ing

WARNING!

I

Do not remove or install a PCB with the power on. When the defect is not localized to spedfic channels, an effective technique is to replace the suspected boards one at a time until the problem is eliminated.

Analog Processing

VDT, IFD, IGD, BBQ, AUX These boards process the combined ultrasound signal from all channels. The IGD is included in this group because it controls gain functions which influence all channels. Failures of boards in this group result in loss of gain or resolving power across all channels. Failures of the VDT and IFD affect only 2-D imaging, Doppler perfonnance is unaffected. Failure of the BBQ will affect all Doppler modes, but not 2-D imaging. Failure of the AUX will affect only CW and AUX CW operation. The IGD can cause problems in all operating modes.

Digital Control

ZS, STG, DeC, MEX TRM,ZDT These boards control the functions of the Scanner and coordinate its operation with the Scan Converter. Failures can affect all aspects of Scanner operation. The following table lists some typical failure types and the digital control boards to check. Although unlikely, failures of the Scanner Mother Board may cause a wide variety of symptoms. If changing other Scanner boards does not correct a failure, the 25MB should only be changed as a last resort.

Scanner Power-up Errors

Scanner power-on diagnostics test the Scanner digital circuitry when the system is powered on or reset. If a fault is detected, one of the error messages may be displayed on the video monitor. The following table lists some examples of Scanner power-up messages and likely causes.: Table 5-13

Examples of Scanner Error Messages

Error Message

Possible cause

S.INTRPT Power-Up Error

Error in the Scanner interrupt circuitry. Check ZS, STG, DeC, ZDT, lOB, MEX and chassis interconnect cables.

DPR Power-Up Error

Error in dual port ram (on ZDn Check ZDT, S, and lOB and interconnecting cables.

5-20

ZS Power-Up Error

CheckZS.

DeC Power-Up Error

Check DeC and ZS.

MEMEX Power-Up Error

Check MEX and ZS.


1096


Scan Converter Troubleshooting Scan Converter Power-up Errors

Failures of DIMAQ Workstation boards can result in power-up errors or incorrect system operation.

When the system is powered on or reset, a series of diagnostic tests is performed on the Scan Converter circuitry in the D1MAQ Workstation. Although the resulting error messages indicate specific boards, the actual cause of failure may be a related board. The following table lists some examples of Scan Converter powerup messages and likely causes.

Table 5-14 Examples of DIMAQ Workstation Error Messages

1096

Error Message

Possible Cause

DSP Power-up Error

• DSP, DAQ,WFP

DAQ Power-up Error

• DAQ, DSP, WFP

WFP Power-up Error

• WFP, DAQ, DSP

FEC Power-up Error

• FEC, ZFEB, CRP

ZFEB Power-up Error

• FEC, ZFEB, CRP

CRP Power-up Error

• FEC, ZFEB, CRP

Service Manual

5-21


5·22


1096

Aspen™

Ultrasound System Service Manual

System Diagnostics

cc:uson

I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I

CHAPTER 6

System Diagnostics -_._._-----------------------

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Accessing Customer Menu

6-2

The Customer Menu

6-2

Emergency Diagnostics By

6-6

Technical Assistance

6-6

Service Manual

6-1

Chapter 6 - System Diagnostics

Your Aspen ultrasound system runs Power On Diagnostics to ensure that everything is functioning perfectly to Acuson standards. Power on diagnostics are run first time you power on the system each day. Diagnostics will be byed for every subsequent power on or on reset. A customer diagnostics menu is available, providing you some additional diagnostic tools. This section describes your customer diagnostic tools.

ACCESSING CUSTOMER MENU You can access the Customer Menus immediately after powering up or resetting the system. •

To access Customer Menu, press and hold TEST for one second immediately after power up or immediately after pressing RESET.

The RESET and TEST buttons are located under the right interface handle. The RESET button is closest to the trackball, the TEST button is on the right. The Customer Menu appears after approximately 5 seconds.

THE CUSTOMER MENU The Customer Menu contains a number of different diagnostic functions, as shown in Figure 6-1. CUSTOMER MENU CQPVRIGHT(C) 1996 ACUSON CORPORATION This diagnostic software is (ll,Il()&d by Acuson and is licensed only

for use by Acusan custtwers as eKp"'essly authorized by Acuson. EXIT (contirue noraal sterb.lp)

IE1P

IU'l Po.Ier On Diagnostics Keyboard Functiona 1 t ty check Logs - - - - - - - - - - - - - - - - )

Configuration -------------) Video Test Patterns - - - - - } Service Phone ...... - - - - - )

an ENTRY with the

Figure 6-1

6·2

Customer Menu


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The Customer Menu

The following menu functions are available: Function

Description

Exit Help

Exits Diagnostics and continues normal startup. Displays useful information on these Diagnostic selections and tools. Allows you to run the standard Power-On Diagnostics immediately, on demand. Displays a representation of the keyboard on the system monitor. As you press a control on the keyboard, its representation lights up or spins to that it is functional. See Figure 6-2.

Run Power-On Diagnostics Keyboard Functionality

Power Up Log Diagnostic Configuration

Exit this test by pressing CODE + C or RESET. Keeps a log of any errors encountered in the Power On Diagnostics. Allows you to set when to run the standard power on diagnostics. See Figure 6-3. Choose between diagnostics running: •

The first time the system is powered on each day (once per day)

•

Every time the system is powered on

NOTE: If a problem was detected during the last Power On Diagnostics, diagnostics will run every time regardless. Displays a variety of patterns to choose from for setting up cameras and other video equipment. See Figures 6-4, 6-5 and 6-6.

Video Test Patterns

Exit a test pattern by pressing CODE + C or RESET.

Service Phone Number

1096

Displays a phone number to call for service questions or problems.

Service Manual

6-3

Chapter 6 . System Diagnostics

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CUSTOMER MENU COPVRIGHT(C) 1996 ACUSONCORPORATIDN This diagnostic; aofwa...e is cwr'lad by Acuson and i .. l1e.nllled only 'for u.s by Acuson eusta.ers .5 el<pr'"e_l)l aut.hDr1ZMt by Acu.on.

EXIT

sUrt.up)

HE\.p

Run Pawer On Dtagnost.1cs Keyboerd FIMM;:'t iOl'Ult ity check

Logs

------------------------> Q

Video T.at

---------)

Service Phone Number --------)

Figure 6-3

6-4

Power Up Diagnostic Configuration


1096

The Customer Menu

CUST(MfR MENU COPYRIGHT(C) 1996 ACUSOt: CORPORATION

This diagnostic sof1lolare is OlaIfled by AcusOfl and is licensed only for use by Acuson cusu.ers as 8I
EXIT (continue norw.al startup) IElP

(use coa:-C to exit test patterns) SIPTE EG 1-1990 Color Sar Test Pattern kayboan:l it" check SW'TE RP 133-19fIi Medica 1 Diag laag'ing Pattern CrosnIhatc:h Patt.-n l .... - - - - - - - - - - - ) IDOl WITE Flat Field tOOl GREEN flat Field eonfigu""ation 1D01 BllE Flat Field

fiun Power On Diagnostics

--------->

I• ••••••••••• II Service Phone

---->

lUOlRED Flat Field

GM Crosshatch Pattern

IDOl Vincb! Patt.-n 50l Vincbr Patt.-n 101 Vtndaw Patt.rn • Vindow Pat:tem lliray R.-p Pattef"'n Co lor R.-p Pattern

Figure 6-4 Test Patterns

Figure 6-5

1096

SMPTE RP 133-1986 Medical Diag Imaging Pattern

Service Manual

6-5

Chapler 6 . Syslem Diagnoslics

Figure 6-6

Gray Ramp Pattern

EMERGENCY DIAGNOSTICS BY The Power On Diagnostics by function is intended for occasional or emergency use only. Allowing your Acuson system to run diagnostics on a regular basis is critical toward ensuring that the system is functioning properly. To by Power On Diagnostics while they are running, press

•

SPACE BAR.

IMPORTANT:

IMPORTANT:

If your system is frequently moved around, you should set it to run Power On Diagnostics once per day and let them run thoroughly to ensure that the system is functioning properly. Use the diagnostics by for emergency situations only.

Ilf

a problem was detected during last Power On Diagnostics, the by function will not work.

TECHNICAL ASSISTANCE For any service related questions or technical assistance, call the phone number listed in the Diagnostics menu or, from within the United States, call the North American Service and Technical Assistance Team at 1-8DO-9-ACUSON 0-800-922-8766.) For other locations, call your Acuson Service Representative.

6-6

Acuson Aspen Ullrasound Syslem

1096

Aspen™


Preventive Maintenance

_ Clcuson

CHAPTER 7



7-2

Preliminaries

7-2

Initiating Cue Interview the Operator

7-2 7-2

Visual Inspection

7-3

Basic Precautions Cleaning and Sanitizing the System Cleaning Air Filters

7-3 7-3 7-4

Mechanical Inspection

7-5

Monitor Assembly Wheels and Locking Mechanism Covers and s Interface

7-5 7-5 7-5 7-5

Electrical Verification

7-6

Following Basic Precautions

7-6

System Monitor Controls

7-7

Operational Verification

7-8

Transducer Selection Cardiology Controls AEGIS Digital Image and Da ta Management System Peripherals Operation Verification

7-8 7-9 7-9 7-9

Customer Diagnostics

Entering Customer Diagnostics Power On Diagnostics Keyboard Functionality Exiting Customer Diagnostics

1096

Service Manual

7-"

7-11 7-11 7-11 7-11

7-1

Ch.apter 7 . Preventive Maintenance

PREVENTIVE MAINTENANCE This section specifies the recommended frequency for perfonning a Preventive Maintenance on the Acuson Aspen ultrasound system. Periodic maintenance provides significant contribution to ongoing reliability and perfonnance of a system. The Aspen system is a reliable and mobile modern electronic equipment and it contains self-diagnostics. No calibration or electronic adjustments are required. For infonnation about your Aspen system's warraniy and Acuson's preventive maintenance program, refer to the Appendix 5, Warranty and Service.

PRELIMINARIES Initiating Cue

Interview the Operator

There are several ways that a PM inspection may be initiated. The minimum recommended frequency of PM inspections is one per year. We recommend that a PM is perfonned: •

Periodically. This period may vary from 3 to 7 months, depending upon the operating environment.

•

Following a customer request.

Before starting the actual PM, you should meet briefly with the (s) and discuss any problems or concerns that they may have with the system. It is important to take time to address the concerns relating to the perfonnance of the system. Review at least the follOWing:

7-2

•

Follow up on any open issues.

•

Have there been any problems?

•

Does the machine appear to be functioning nonnally?

•

Are they satisfied with the diagnostic quality of the images?


1096

Visuallnspeclion

VISUAL INSPECTION Basic Precautions

•

Ultrasound systems are sometimes used in an environment in which they are exposed to pathogens which pose a potential health hazard to persons handling the system. For health reasons, always thoroughly clean, sanitize and/or sterilize the system and its transducers prior to performing maintenance.

WARNING!

Cleaning and Sanitizing the System

WARNING!

1096

Visually inspect the operating environment for bio-hazards before doing anything to the system or the transducers:

1

Look for visual signs of biohazards presence on and around the system.

2

Use caution especially when handling the system or the transducers, bloodbome pathogens may be present.

3

Take necessary action if biohazard presence is suspected.

4

If not sure, treat system as infected and consult with an infection control nurse for assistance.

•

I

To clean or sanitize the system:

1

Tum off the system and unplug it from the power outlet.

2

Clean the system cabinet, transducer holders, and storage bay with a damp cloth soaked in mild soap and water, or sanitize it using isopropyl alcohol.

00 NOT drip any liquid into the system or onto the keyboard.

Service Manual

7-3

Chapter 7 - Preventive Maintenance

The Acuson Aspen system has three air filters. Air filters are located on both the upper right rear and upper left rear of the system. An additional air filter is located on the front left side of the system. Figure 7-1 shows the location of the air filters.

Cleaning Air Filters

Remove, inspect, and clean the air filters each week. •

To remove and clean the air filters: 1

Unplug the system from the power outlet.

2

To remove the air filters located on the upper right and left side of the syslem, use the tab on each filter to slide it out and remove the filter.

3

To remove the air filter located on the. front left side of the system, use the tab on the filter to slide it out and remove the filter.

4

Wash the filters in water with mild detergent and dry them, or clean them with a hand-held vacuum cleaner.

S

Replace the filters.

Figure 7-1

7-4

Air Filter Removal

Acuson Aspen Ultr&.sound System

1096

Mechanical Inspection

MECHANICAL INSPECTION •

To inspect the mechanical integrity of the system:

The Aspen system is a mechanically robust equipment, and it is specially designed to be very mobile and maneuverable. However, mechanical inspection is recommended for the following items: Monitor Assembly

Wheels and

•

•

Locking Mechanism

To inspect the tilt and swivel capabilities of the system monitor assembly: o

Push the locking handle in to release the monitor assembly lock.

o

Check the vertical tilt maneuverability by rotating the monitor up and down vertically.

o

Check the swivel maneuverability by rotating the monitor assembly horizontally.

To inspect the wheels and locking mechanism: o

Push the locking mechanism on the front wheels to the back of the system to check the locking of the wheels.

o

Push the locking mechanism to the front of the system to check the unlocking the wheels.

Covers and s

•

Inspect the covers and s for any damage.

Interface

•

Inspect the Interface:

1096

o

Check the keyboard for any damage.

o

Clean the keyboard with a brush or vacuum cleaner.

Service Manual

7-5

Chapter 7 Preventive Maintenance p

ELECTRICAL VERIFICATION Following Basic Precautions

The following safety precautions should be observed when servicing the Acuson Aspen system:

WARNING!

Lethal voltages (up to 300 VDC) are present inside the Acuson Aspen system. Use caution when opening the unit. Under certain fault conditions the high voltage bus may remain charged even when the main breaker is off. Furthermore, the operating temperature of some components can cause bums.

IMPORTANT:

The Aspen system employs a software power-on/off circuit. This means that there are live voltages present in the system even with the power off. Always unplug the system from wall outlet to perform any cleaning or maintenance. •

7-6

To check the following for electrical verification of the system:

1

the LEOs are lit on rear .

2

Check the connectors on the power cable for any deformation or discoloration due to resistive heating of connector pins. Also check the power cable for any deformation or damage. Replace cable or connector if necessary.

3

that the line voltage is within specifications (see Chapter 3, Power Subsystem). Measurement should be within the stated range when the system is both on and off. The system may shut itself down if line voltages are outside these specifications.

4

that all recording devices such as VCRs or printers are connected to one of the isolated outlets on the back of the Aspen system. If these devices are plugged directly into the wall outlets, excessive leakage current may cause a hazard.

S

the operation of the cooling fans. Listen for any excessive noise caused by failed bearings. If fans are running at exceptionally higher than normal speed then notify Acuson service representative.

6

the leakage current on the system using your test equipment. For the electrical safety requirements see Chapter 1, Introduction and System Requirements.


1096

System Monitor Controls

SYSTEM MONITOR CONTROLS Since many of the tests involve careful examination of thE' displayed ultrasound image on the monitor, it is essential that monitor is set up in a consistent way on each occasion. The level of ambient light will also influence the tests and it should be consistent as much as possible. •

IMPORTANT:

1096

To check the Aspen system monitor:

1

Pull the monitor control knobs out to CALIBRATE mode and use it as your start up reference.

2

Enter Customer Diagnostics Menu. Refer to Chapter 6, System Diagnostics.

3

Select Video test patterns from the menu and check following Video test patterns: •

SMPTE EG 1-1990 Color Bar Test Pattern

•

SMPTE RP 133- 1996 Medical Diag. Pattern

•

Crosshatch Pattern

Do not forget to relurn the monitor control knobs to their original position when finished, keeping in mind tha t s are generally very particular about monitor settings.

Service Manual

7-7

Chapter 7 . Preventive Maintenance

OPERATIONAL VERIFICATION This section provides basic means of ing the operation of the Acuson Aspen system and it's recording devices. When evaluating the Aspen system operation consult your Acuson Aspen System Manual on using the system. Your Manual contains more specific information on the clinical use of the system. Transducer Selection

•

To check the ability of the system to recognize all available transducers: 1

Insert the DL-type transducer connector into the DL transducer port on the front of the system and rotate the locking knob clockwise to lock the transducer in place.

2

Insert the MP-type transducer connector into the MP transducer port on the front of the system and rotate the locking knob clockwise to lock the transducer in place.

3

Press XDUCR key to display ail transducers available on the softkey menu. Press the softkey corresponding to the transducer you want to check.

4

Press the MULTIHERTZ@ toggle switch up or down to change the imaging frequency available to you on the transducer.

S

Select modalities from interface to check available modes for each transducer.

6

Repeat the procedure for all available transducers.

•

To check 2D mode functionality:

1 IMPORTANT:

I

For more specific information on the B-rriode controls, consult your Manual.

•

IMPORTANT:

To check Spectral Doppler functionality:

1

Obtain a B-mode image of the area of interest and position Doppler gate on the area of flow.

2

Enter Spectral Doppler and B-mode controls for their operation.

I

For more specific information on the Spectral Doppler controls, consult your Manual.

•

7-8

Select a transducer and 2-D mode controls for their operation.

To check the Color Doppler functionality:

1

Obtain a B-mode image of the area of interest and position CD Res Box on the area of flow.

2

Enter Color Doppler and Color Doppler controls for their operation.


1096

Operational Verification

IMPORTANT:

Cardiology Controls

IMPORTANT:

I

For more specific information on the Color Doppler controls, consult your Manual.

•

I

1

Select a cardiac transducer and obtain a B-mode image of the area of interest and position the M-mode cursor on the area of motion.

2

Enter M-mode and check the operation.

For more specific information on the M-mode controls, consult your Manual. To check ECGI Physio Module functionality (If available):

• 1

IMPORTANT:

AEGIS Digital Image and Data Management System

Plug the ECG cable into the ECG Module and stick the ECG electrodes to yourself and check the operation.

I

For more specific information on the ECG controls, consult your Manual. 2

IMPORTANT:

To check the M-mode functionality (if available):

Plug the Physio transducers into the Physio Module and check the operation.

I

For more specific information on the ECG controls, consult your Manual.

•

To check the AEGIS system functionality (If available): 1

Store a static image and review it on the monitor to check the acquisition and review function.

2

Store a dynamic clip and review it on the monitor to check the dynamic clips acquisition and review function. (Always review Dynamic Clips in small format. This section provides basic means of ing operation of the peripherals interfaced to a Aspen system.

Peripherals Operation Verification

Always consult your Manual on how to use the peripherals. Your Manual contains more specific information on the use of the peripherals. . •

IMPORTANT:

1096

To check the operation of the Sony VCR-SVO 9500 MOP: 1

Check VCR configuration and cabling with the Aspen system.

2

Turn the VCR on, insert a blank tape, and the operation of the VCR.

I

For more specific information on the VCR controls, consult your Manual.

Service Manua'

7-9


•

To check the operation of the Sony UP-5650 or UP-1800 color printer: 1

Check printer configuration and cabling with the Aspen system.

2

that the printer is loaded with film and paper.

3

Print a tolor image from Aspen system and the operation of the printer. To check the operation of the Sony UP-910, UP-930 and UP-890 BIW printer:

• 1

Check printer configuration and cabling with the Aspen system.

2

that the printer is loaded with the paper.

3

Print a B/W image from Aspen system and the operation of the printer.

•

IMPORTANT:

7-10

To check the operation of the liE Multi-Image Camera, check camera configuration and cabling with the Aspen system: 1

that the camera is loaded with the film cartridge.

2

Print a B/W image from Aspen system and the operation of the camera.

I

For more specific infonnation on the use of peripheral devices, consult your Manual.


1096

Customer Diagnostics

CUSTOMER DIAGNOSTICS Entering Customer Diagnostics

You can enter the Customer Diagnostics Menus immediately after powering up or by resetting the system.However, you will use the trackball and the trackball select keys to navigate through the menu.

•

Power On Diagnostics

Keyboard Functionality

Exiting Customer Diagnostics

To access Customer diagnostics:

1

Press and hold TEST for one second immediately after power up or immediately after pressing RESET.

2

Continue to hold these keys for two to five seconds, and then release. The Diagnostics menu appears momentarily.

3

Press either trackball select key to select the function required.

•

To check the system for any Power Up error messages: 1

Enter Customer Diagnostic Menu

2

Check Power on Diagnostic Log to ensure no failures have been reported since last PM.

3

Select Run Power On Diagnostics from the menu

4

Wait for the self diagnostics to run. if any errors are reported, refer to the Troubleshooting Chapter of this Manual and resolve the problem before proceeding any further.

S

If problems do arise which are difficult to troubleshoot or are subtle in nature, your Acuson Service provider.

•

Select the Keyboard Functionality Check. 1

Press the controls on the keyboard and their functionality on the representation on the monitor.

2

Exit this test by pressing CODE + C or RESET.

•

To exit Diagnostics and return to imaging: 1

With the Diagnostics menu displayed, select EXIT and press the trackball select key. The system will re-initialize to imaging mode.

1096

Service Manual

7·11


7·12


1096


Parts List

cc:uson

CHAPTER 8

Parts List

Aspen System Acronym List

8·2

Aspen System Parts List

8-4

Cables and Wire Harnesses

8-4

Power Cables Standard Cable Assemblies Ribbon Cables

8-4 8-4 8-5

Chassis Hardware

8-6

Chassis Mechanical Cosmetics Air Filters Manuals

8-6

Monitor Assembly

8-8

Peripheral Interface Cable Assemblies

8-8

Power Supplies

8-8

Printed Circuit Boards

8-9 8-9 .

Scanner PCBs Scan Converter PCBs

1096

8-6 8-7

8-7

8-9

Misc. Parts

8-10

Interface Assemblies

8-10

Ul Assemblies VJ Cables

8-11

8-10

Service Manual

8-1

Chapter 8 - Parts Ust

ASPEN SYSTEM ACRONYM LIST The following table describes various acronyms used in the Parts List and elsewhere in the Manual. Acronym

Description

ACBox

AC Input/Output Box Apodizer

APD AQP AUXCW

Auxilary Continuous Wave Doppler Board

BBQ

Baseband Quadrature Board

COM CRP DAQ

Cine Data Memory Board

DBl DCC DCI

Color Reconstruction Processor Doppler Acquisition Processor Board Distribution Board Lower

Dual Chanoel Controller Board Digital Compression Interface

ECG EXP

Downlight Board Doppler Spectral Processor Board Electrocardiograph Module Expose Control

FEC

Flow Estimator Calculator Board

FPl

Front Light Board Hard Drive Heart Pulse Respirator Assembly Intermediate Frequency Detector Board Interpolating Gain Driver Board Input/Output Board

DNlT

DSP

HD HPR IFD

IGD lOB Iso Xfmr JPEG LCD

Isolation Transformer

JPEG Compression Board Liquid Crystal Display

MEX(Memex)

Memory Expansion Board

MXK MO MP MSE OVP PB

Mixer Clock Board

PCA PCB

8-2

Acquisition Processor Board

Magneto Optical Micro Pinless

Monitor Speaker Equalizer Overvoltage Proted Board (Box) Push Button Printed Circuit Assembly Printed Circuit Board

PPR

Pulses Per Revolution

PI'S


QD

Quick Disconnect (in reference to Auxiliary Cart)

RCV RP

Receiver Board

RTB

Reset Test Board

Reconstruction Processor Board


1096

Chapler 8 - Parts List

Acronym

Description

SOL

Summing Delay Line Board

SSW STC

Scanner Timing Generator Board

SVC

Syscon Video Controller Board

TRM

Terminator Board

UOC

Depth Control Assembly

UI

Interface

UIC

interface Controller Board

UIP

Interface

UIQ

Interface QWERTY Keyboard

VOT

Video Detector Board

VPB

Video Processor Board

WFP

Waveform Processor Board

Wshr

Washer

Xdcr

Transducer

XOY

Transmit Delay Board

XMT

Transmit Board

ZAP

Audio Processor Board

S.c. Scm Scr

Scan Converter

SCSI

Small Computer System Interface

ZDL ZFEB

Dl Transducer Interconnect Board Distribution Board Top Flow Estimator Buffer Board

ZIP

MP Transducer Interconnect Board

ZSCMB

Scan Converter Motherboard

ZDT

1096

Switch Board

Scanner Screw

ZS

Scanner Control Processor Board

25MB

Scanner Motherboard

Service Manual

8-3

Chapter 8 - Parts List

ASPEN SYSTEM PARTS LIST Following is a list of parts used in the Aspen ultrasound system.Peripheral interface cables are also listed. Acuson is continually improving the design and capabilities of its products and therefore reserves the right to substitute parts of comparable functionality at its discretion. If you have difficulty identifying a replacement part, please your Customer Service Engineer or call ]-800-9-ACVSON for assistance.

CABLES AND WIRE HARNESSES Power Cables 30]93

Cord, Power] ]5VAC

34367

Cord, Power, AC, 230VAC

34768

Harness, Scanner Digital +5V

35901

Cable Assy, AC, Primary Input

37808

Cable Assy, lOB/Thermal Interface

40489

Cable Assy, MSE / AP Power

43003

Cable Assy, SCMB +5 Digital

43004

Cable Assy, SCMB +5 Dig Rtn

46539

Cord, Pwr, AC Box to Main P.S.

49370

Harness, Power, Aspen

34780

Cable Assy, lOB/Main P.S. Interface

34785

Cable Assy, 10B/AP Interface

34387

Cable Assy, DBR-HPR Sync·

34787

Cable Assy, lOB/Monitor Interface

34795

Cable Assy, FAN/TEMP Harness

34798

Cable Assy, Scm Analog

34801

Cable Assy, Scm Control

34802

Cable Assy, Scm Voltage

35900

Cable Assy, HPR-ECG Sync

37780

Cable Assy, lOB/VIC Interface

37797

Cable Assy, UIC/ZAP/DNLT /SYSCTR

37798

Cable Assy, VIC/Foot Switch

Standard Cable Assemblies

8-4


1096

Cables and Wire Harnesses

37799

Cable Assy, VIC/Monitor Soft Keys

37908

Cable Assy, Physio/SC Interface

37914

Cable Assy, AP/Headphone/Speaker

38959

Cable Assy, RTS/FPL

41549

Cable Assy, Senr Data

45703

Cable Assy, Senr Address

33496

Cable Assy, AQP /D

34368

Cable Assy, SCSI p.s. Bay

34370

Cable Assy, SCSI Disk Drive Bay

34378

Cable Assy, Doppler Digital

34579

Cable Assy, IFD/VDT4

34580

Cable Assy, Coax, IFD/VDT4

34781

Cable Assy, DCI/IOB

34782

Cable Assy, Physio Interface In!.

34788

Cable Assy, SVC/DCI

34790

Cable Assy, S.c. Remote Bus

34793

Cable Assy, RP / AQP

34803

Cable Assy, DCI SCSI Internal

34808

Cable Assy, 10Bas....T, Internal

42135

Cable Assy, SVC/VPB

49371

Cable Assy, Physio/S.C. Interface

Ribbon Cables

1096

Service Manual

8-5


CHASSIS HARDWARE Chassis Mechanical 34357

HD/MO Drive, Mounting Plate

34359

Disk / Audio Box, Rear Cover

34371

S.c., Cover, Assy

34386

Scm, Cover, Assy

35070

S.c., Card Guide Btm, Assy

35071

S.c., Card, Guide, Top, Assy

35111

, Senr Boards

37769

Bracket, PPS Mounting

39987

Tilt & Swivel, Assy

40365

Bezel, 256, MP Secondary Barrier

40367

Cap, 2ndary Barrier Assy

40374

MP Secondary Barrier (Shutter), Assy

46553

Plate, Hubcap Retention

46630

Bracket, Xdcr Holder, Left

46631

Bracket, Xdcr H9lder, Right

37762

Side , Left

37763

Side , Right

37766

, Front

37812

Grill, Front Filter

37813

Holder, Xdcr Left

37816

Rear

37820

Cap, Filter, Side

37822

Door, Peripheral Bay, Assy

3d825

Holder, Xdcr Right

37929

Handle Rear

37822

VCR Door, Peripheral Bay, Assy

37946

Top, Peripheral Bay, Assy

37951

Rear, Peripheral Bay, Assy

Cosmetics

6-6


1095

Chassis Hardware

:17%0

Blank Door, Peripheral Bay, Assy

37962

Pad, Interior Peril Bay

38000

Disk Bezel. Assy

39712

Cvr, Peril Bay Lelt, Assy

39714

Cvr, Peril Bay Right, Assy

39939

Front Storage, Assy

39958

MP Plug, Assy

40247

Holder, Gel

40491

DL/MP, Assy

42622

Peripheral Tie Down Strap, Assy

46517

Pad, Top, Peripheral Bay

Special Order

Door, Rear, lOB

46551

. Forward Trim

49366

Caster, Hub Cap

37991

Filter, S.c. & Scm. Rear'

37992

Filter, Scanner, Front

47881

Manual

47882

Transducer and Peripheral Manuat-

49881

Service Manual

49692

Manual

'49694

Transducer and Peripheral Manual

49693

Manual

49695

Transducer and Peripheral Manual

49691

IEC 1157 Tech Data in German

Air Filters

Manuals English

(

French

German

1096

Service Manual

8-7


MONITOR ASSEMBLY

31873

Aspen 14" Monitor Subassembly

PERIPHERAL INTERFACE CABLE ASSEMBLIES

26096

Adapter Sony Remote Prntto BNC

34805

Cable Assy, Printer (Centronics)

34810

Cable Assy, VCR

34813

Cable Assy, RGB5 IN

34814

Cable Assy, RGB AUX

34819

Cable Assy, EXP/CONTROLLER

34820

Cable Assy, CAM VIDEO

35013

Assy, VCR Adptr RJ12 to DB25

35907

Cable Assy, RGB IMAGER

39932

Cable Assy, Main Carl, QD

39933

Cable Assy, Aux Carl, QD

39934

Cable Assy, Exp / Control

39935

Cable Assy, Cam Video

29855

Main Power Supply, Assy

37804

AC Box, 115 VAC, Assy

37981

AC Box, 230 VAC, Assy

37984

Fuse, 510 Blo SA 250V

37985

Fuse Block 30A 1/4" Q.c.

42526

PP53 Box, Assy

49365

Isolation Xfmr Box, 220VAC, Assy

37805

Isolation Xfmr Box, I1SVAC, Assy

POWER SUPPLIES

8-8


1096

Printed Circuit Boards

PRINTED CIRCUIT BOARDS Scanner PCBs 10332

APD

Apodizer

10412

TRM

Terminator Board

16942

XDY3

Transmit Delay Board

17332

AUXCW

Aux. CW Doppler Board

17912

RCV2

Receiver Board

17932

MXK2

Mixer Clock Board

18132

SDU

Summing Delay Line

20992

XMT4

Transmitter Board

.21552

DCC3

Dual Channel Controller

26142

MEX3

Memory Expansion Board

26442

IGD3

Interpolating Gain Driver

30242

IFD

Intermediate Freq. Detector

32272

BBQ4

Baseband Quadrature Board

34602

DBL4

Distribution Board Lower

35412

STG5

Scanner Timing Generator

38072

ZIP

MP XDCR Interconnect

41172

ZDT

Distribution Board Top

45842

25MB

Scanner Motherboard

46212

ZS

Scanner Control Processor

46602

ZDL2

DL XDCR Interconnect

47962

VOT4

Video Detector Board

14922

DSP2

Doppler Spectral Processor

19312

DAQ3

Data Acquisition Board

30362

ZSCMB

Scan Converter Motherbaord

31292

AQP

Acquisition Processor

36552

FEC4

Flow Estimator Calculator

39962

JPEG2

JPEG Daughter Board

41312

IOB2

Input/Output Board

41612

WFP

Waveform Processor

41622

CRP

Color Reconstruction Processor

Scan Converter PCBs

1096

Service Manual

8-9

Chapter 8 . PariS List

MIsc.

41632

CDM2

Cine Data Memory

41642

SVC2

Syscon Video Controller

41652

VPB2-N

Video Procesor Board NTSC

41662

RP2-N

Reconstruction Processor NTSC

41672

DCI2 (Aegis)

Data Compression Interface

41752

VPB2-P

Video Procesor Board PAL

41762

RP2-P

Reconstruction Processor PAL

45792

ZFEB

Flow Estimator Buffer

37846

Fan

Fan 6" 12V w 1Rotation Detection

37918

Fan

Fan 80mm 12V w IRotation Detection

37920

Tenninator

Terminator, Active SCSI

37926

ECG2

Electrocardiograph Module, Assy

37927

HPR

Heart Pulse Respirator Module, Assy

37980

OVPBox

Overvoltage Protect Box

47246

Hard Drive

Hard Drive, Internal, 1.08GB

40942

MSE

Monitor Speaker Equalizer

42748

MODrive

3.5" 230MB M.D. Drive

45512

ZAP

Aspen Audio Processor

21092

T.5.

Thermal Sense Board

43292

DFB2

Disk Filter Board

PARTS

INTERFACE ASSEMBLIES UI Assemblies

8·10

32938

Key, Paddle

32940

Trackball II, 2'14", Stone Gray

33134

Overlay, Main, VI, Domestic

33145

Pushkey,Sm

33442

Vser Depth Control Board

35096

Encoder, Rotary,16ppr wi detent & PB

35097

Encoder, Rotary, 16ppr, detent

Acuson Aspen Ultra.sound System

1096

Interlace Assemblies

35O'J8

Encoder, Rotary, 32ppr, w/detent & PB

35099

Encoder, Rotary, 32ppr, PB

35100

Encoder, Rotary, 32ppr

37581 (Top Levell

Interface Complete, Assy

37592

Interface PCA

37606

Hook, Xdcr Cable

37821

Cap, Handle, Console Bezel, UI

37941

UIQ Elastomer

38082

QWERTY Light Board, PCB Assy

38092

Reset/Test Board, PCB Assy

38102

Front Light, PCB Assy

38112

Power Switch Board, PCB Assy

38122

Selector Select Board, PCB Assy

39316

Shield, Encoder, VI

39543

Bezel, UOC

39545

Pushkey, Std

39546

Pushkey, Std w /indicator, Assy

39550

Pushkey, VCR, Assy

39554

Pushkey, Hardcopy, Assy

40537

Bezel, Console, Ul, Assy

41302

UlC2, PCB Assy

. 42419

Knob, Rotary

42422

Pushkey, Begin, Printed

42424

UlQ Keys, Domestic, Assy

45476

Kit,Annotation KeyCap,English

45625

Liquid Crystal Display w / connector

45946

UDC,Cap,

46467

Wheel, Cine, Stone Gray

37800

Cable Assy, UlP/LCD

37801

Cable Assy, VIP /UDC

37803

Cable Assy, UlP/UlQ

37963

Cable Assy, UlP/RTS

38958

Cable Assy, UlP /SSW /Trackball

UI Cables

1096

Service Manual

8-11


8-12


1096


System Drawings

cc:uson

APPENDIX A

System Drawings

System Cabling Diagram Exploded View, Interface, DIMAQ Workstation Exploded View, Disk/Audio Box, DIMAQ Workstation Exploded View, Power Supply Bay Exploded View, Scanner Exploded View, Scan Converter, DIMAQ Workstation Exploded View, System, Front Exploded View, Casters

1096

Service Manual

A-3 A-7 A-ll A-IS A-19

A-23 A-27 A-3I

A·1

A-2


1096

-f

I J.

_a_ _-.

conigufI>d

LEGEND: _

...-

_ _ G.5p1:

-...a on . . . . . . . . . Wi

.,.....ce.-.

.J

-

-

ECG _ _

DigillllSigMI . . . . . . ....

2I7'JO 251VAC,. ttl.

e..-

= fiT

oa

........

i'l,ull I'" GOIl

SCAN CONVERTER

_.- rznAC ..ov""_ _ m.BOX A

MOTHERBD

_..... .r::;anl-.,;li!!!. ... I ::.::

Z'IINIC"" L -

-

a.-

Le ......

Iij7i

GN)

"_SCSI

1luoI_

lin.

I I

1-

'dJ.:: ",_

...... ........

ill

3....

.,

101

.-

DISK DRIVE ENCLOSURE

I-

....... ..... rl-

..... ..=...

..i.e..

:

t.··lI!!i-!.l!!!!!O...c!t!!!L

..... ..... ......

.-_ ••..•...•._•..•...•..•:••'

..... ee.iItCBl:.tD P.8. . . . . . . . .

..... ...... ..... ...... ..... ........ , ...

.t14 .. PIlL "'*4.)

;1

&

: I

-t-----------------------

I

•

!'..

... 4P11:l1lIHH. ..

•

---1---+=DC::..:.'::;,U::;=:::.:'-:::..:'''':r--t

i

"""--

,m .......

PEFIfItt

...,

uoc _ _

.....

'.

IN' I 2 : J G M D

--{].n 4"'1I*L

=---

-, I i

. ... . ........ . .

y--

lIAYNN

4rJO\

-

I

• .......... I

J

""'''1C5IZ

+12'18C.·12VSC

J4M:A_

I--

......... . ...

UP

I

I::p

._- _cw_

MAIN POWER SUPPLY I2lI855

I I I

ZDT ·7..5W-15V

A

.ITA (12 Pm. M-H-L)

J78 (15 PDa. M*i.)

rI

I,

I I

A ID

10 10 1%1VAe,, _ _ HI

I I I I I r I I

•

NOTE: A

i I I

,j

r

..,.. ..,..

JI" ...

Il------J

Jt-J4

HO-ZO

JI .....

IIJll12 PoL M*l)

./

........ Hl>2ll

-

UIC IP'ICI!M""

DOWEA UIC NC

.::. [1---+-+---, J9 .... HD-ZO

J2 (15 PaL fII.ff-l)

vnrr:

··, , ·,

lJ

L-t--'::::5i"1-+-.J ,------1'---....---4

Jl2S! ... Hl>2ll

DBL

NC

L

;:::.....

SCANNER

J20 eo. JKik

NC

MOTHERBD

JIO Hl>2ll

"! ""

NC

H __

+_+---__ • __ ....

lJIC.MON 0377119

... _

(1.

J1 (3 Pc.

,= \TlG_.,

I

""

[J

_ _ 13111.

rT7

' .,

...

A

o

-=.;.

Table A-I

Interface, DIMAQ Workstation

EM#

ACUSON PIN

DESCRIPTION

OTY.

1

40537

Assy, Bezel, Interface (UI) Console

1

2

38122

PCB Assy Selector Switch Board

1

3

42424

Assy, UIQ Keys, Domestic

1

4

45946

UDeCap

8

5

39543

UDCBezel

1

6

33134

UI Overlay, Domestic

1

7

39545

Pushkey, Std

12

'8

39546

Pushkey, Std wi Indicator

26

9

39550

Pushkey, VCR

7

10

42422

Pushkey, Begin, Printed

1

11

39554

Pushkey, Hardcopy

6

12

3293&

Key, Paddle.

13

13

n/a

Assy, Switch Matrix w I QWERTY

1

14

35096

Encoder, 16

2

15

35097

Encoder, 16 PPR w IDentents

1

16

35098

Encoder,32 PPR w IDentents/Push

2

17

35099

Encoder, Rotary, 32 PPR, Pushbutton

2

18

35100

Encoder, 32 PPR

2

19

39316

Shield, Encoder, ill

9

20

45625

Assy, LCD Display wi connector

1

21

41302

Assy, PCB Interface Controller

1

22

33442

Assy, Depth Control

1

23

32940

Trackball

1

24

37811

Casting, Base, Control

1

25

37821

Cap, Handle, Front Control

1

26

46467

Wheel, Cine

1

27

42419

Rotary Knob

9

28

47734

Scr,4-40 x .38 Cone SEM

6

29

n/a

Nut,3/8-32

9

30

n/a

3/8"Lock Washer,

9

31

40330

Scr, 8-32 x 3/8" Cone SEM

25

32

n/a

Scr, 2-56 x .I 88"

4

33

18053

Scr, 8-32 x 1/2" Hex

4

34

38092

PCA, Reset Test Board

1

1096

L./ d'103

w lDentents/Push

Service Manual

...

A·S

Appendix A - System Drawings

Table A-I Interface, DIMAQ Workstation (Continued) EM#

ACUSON PIN

DESCRIPTION

QTY.

35

50029

Diff, Downlight

I

36

38102

PCB Assy, Front Light

I

37

37606

Hook, Transducer Cable

2

38

40401

Scr, 4-40X3/8" Shaft, Flat

I

A-6


1096

._ - - - - - - - - - - - - - '

..

'

9 PL

6

29)9 PL

13

20

4 PL 2\

PL

,n

1

J

)

25

34

24

2 PL

Tum the page over for Disk I Audio Box

1096

Service Manual

A-9


Table A-2

Disk! Audio Box, DIMAQ Workstation

EM#

ACUSON PIN

DESCRIPTION

QTY.

1

N/A

Assy, Disk Box (For reference only)

1

2

34357

Hard Drive/MO Mounting Plate

2

3

34359

Diskl Audio Box, Rear Cover

1

4

46499

Cover, AP PCA

1

5

47246

Hard Drive, Internal, 1.08 GB

1

6

42748

MO Drive, 230 MB, Fujitsu M2512A

1

7

37918

Fan, 80MM, 12V W IRotation Det

1

8

31481

Fan Guard, 80mm

1

9

45512

Audio Processor

1

10

40942

Monitor System Equalizer

1

11

38112

PCB Assy, Power Switch Board

1

12

38082

PCB Assy, QWERTY Light Board

1

13

38000

Assy, Disk Bezel

1

14

49373

Aspen Nameplate

1

15

40330

SCR, 8-32 x 3/8 Cone SEM

18

16

40442

Scr, 8-32 x.5 Cone SEM

10

17

Included w I Item 11

Washer, Lock

1

18

Included w I Item 11

Hex Nut

1

19

40593

Standoff, 8-32 x .5" M/F 1/4 HEX

1

20

11866

Kepnut, 6-32 18/8

2

A·10


1096

15

13

PL

18 } I]

PART Of I

II

I REf ]

8 NOT SHOWN II 15 6 PL 19

4 PL

3 6

• 4 PL 16

• 1 IRONICALLY.

DED FOR

PURPOSES

MAO fiGURE NO

' WORKSTAT ION

. A3

Turn the page over for Power Supply Bay

1096

Service Manual

A·13

Appendix A - System urawmgs

Table A-3

Power Supply Bay QTY.

EM#

ACUSON PIN

DESCRIPTION

1

34261

Structu ral Weld't (For reference Only)

1

2

29855

Assy, Main Power Supply , AC/DC

1

3

37769

Bracket, PPS Mount ing

1

4

42526

Assy, PPS3 Box

1

5

37990

Retainer, PPS

1

6

37981

Fan, 80mm 12V W IRotat ion Detection

1

7

31481

Fangu ard 80mm PPS

1

8

37980

OVPB ox

1

9

40330

Scr, 8-32 x 3/8

10

10

4786S

Scr,6 x32x1 1/4

4

11

37985

Fuse Block, 30 AMP 1 14"

1

12

37984

Fuse, Sio Blo 5 Amp 250V

2

13

15513

Scr, 4-40 x .38

2

A-14


1096

I I

I I I I 'Ii.

2 PL

10 4 PL

I I I I I I ill l

I

•

2 PL

9

',', ',', 'l ", "-....

3 PL

2 PL NOT SHOWN

,

,

I,

,

5

9

3 4 FOR SERVICE USE! NOT INTENDED FOR

9

2 PL

9

COPYRIGHT 1996.ACUSON CORPORATION. AU RIGHTS RESERVED. THIS DOCUMENT SHALL.NOT BE COPIED IN WHOLE OR IN PART, EL ECTRON ICAL LY.

e::tc:::....!5:tc::».... TITLE

EXPLODED VI EW , POWER SUPPL Y BAY FIGURE NO.

A4

Turn the page over for Scanner

1096

SeNice Manual

A-17


Table A-4

Scanner

EM'

ACUSON PIN

DESCRIPTION

OTY.

1

34261

Structural Weld't (for reference only)

1

2

34279

Hoor IXfmr Cover

1

3

35961

Isolation Transformer Sheetrnetal Box

1

4

37805

Assy, Isolation Transformer Box

1

5

37846

Fan 6" 12V W I Rotation Detection

3

6

11553

Finger Guard, 6" Fan

3

7

45842

PCB Assy, Motherboard, Scanner

1

8

34374

Assy, Scanner, Chassis

1

9

41172T

ZOTBoard

1

10

n/a

Miscellaneous Scanner Board (for reference only)

n/a

11

34602T

DBLBoard

1

12

34386

Assy, Cover, Scanner

1

13

37834

Handle, 3.5" Mounting Center

2

14

21092

Temp Sensor Board

1

15

47733

Scr 4-40 x 1/2 Cone SEM

2

16

47732

Scr, 10-16 x 1/2 Hex.

6

17

40442

Scr, 8-32 x.5 Cone SEM

52

18

40330

Scr, 8-32 x 3/8 Cone SEM

6

19

47730

Scr, 1/4-20 x 5/8 Hex.

4

20

11716

Washer,l /4 Split Lock

4

..

A·18

'.


1096

2 PL 6 3 PL

3 JlL

5

: Iii. : Ii I ·I . : iii · I .:.

9 10

·I

•

: iii :.. :

•I

12

4 PL

NOT SHOWN

cc:uson

COPYRIGHT 1996 ACUSON CORPORAT I ON. ALL tTiTTr--------J RIGHTS RESERVED. THIS TITlE DOCUMENT SHALL NOT BE EXPLODED VIEW . • . .•

OR IN

ELECTRONICALLY.

FIGURE NO.

SCANNER' AS

Appendix A . System Drawings

Tum the page over for Scan Converter

1096

Service Manual

A·21


Table A-5

Scan Converter, DIMAQ Workstation

EMit

ACUSON PIN

DESCRIPTION

QTY.

1

34261

Chassis Structure, Weldment (for reference only)

1

2

30362

PCB Assy, Scan Converter Motherboard

1

3

11553

Finger Guard, 6" Fan

2

4

34361

Fan Plate, Scan Converter

1

5

37846

Fan 6" 12V w I Rotation Detection

2

6

35071

Assy, Scan Converter, Card Guide Top

I

7

nla

Misc. Scan Converter Board (for reference only)

nla

8

35070

Assy, Scan Converter, Card Guide Bottom

1

9

41312T

PCB Assy, IOB2 w Isheetmetal plate

1.'

10

34371

Assy, Cover, Scan Converter

1

11

37834

Handle, 3.5" Mounting Center

2

12

47733

Scr 4-40 x 1/2 Cone SEM

6

13

47732

Scr, 10-16 x 1/2 Hex.

4

14

40330

Scr, 8-32 x 3/8 Cone SEM

49

15

21092

Temp Sensor Board

1

16

17581

Pin Cap, 2 Pos.

1

17

47407

Shielding, EM!, 13.5"L x .25"H x .50"W

1

18

47408

Shelding, EMI, 11.5"L x 6mm H x 6mm W

1

19

50057

Bracket, EMI Scan Converter Cover

1

A·22


t096

12

2 PL

3

2 PL PL

4 14

t

PL

5 2 PL 14 2 PL

2 PL 4 PL NOT SHOWN

8

cc :u so n

COPYRIGHT 1996 ACUSON TITLE. CORPORATION. ALL RIGHTS RESERVED. THIS DOCUMENT SHALL NOT BE OR IN

fOR SERVICE USE! NOT INTENDED fOR MANUfACTURING PURPOSES

ELECTRON ICALLY.

EXPLODED VIEW SCAN CONVERTER DIMAQ WORK STATION

FIGURE NO.

A6

BASE

IF NE I THER ITEM 6 OR 7 I S USED THEN ITEMS 19 & 26 SHALL BE I NSTALlEb

•

PL 16

2 PL

170R@

4 PL 6 PL

10

5PL

21

c::Ic:::....!5:t«::)..-.

17 PL

FOR SERVICE USE! NOT INTENDED FOR MANUFACTURING

9

14

9 2 PL

COPYRIGHT 1996 ACUSON CORPORATION. ALL TITLE RIGHTS RESERVED. THIS DOCUMENT SHALL NOT BE COPIED IN WHOLE OR IN PART, INCLUDING FIGURE NO. ELECTRON ICALLY.

EXPLODED VIEW, SYSTEM FRONT A7

Tum the page over for System Front

) 1096

Service Manual

A-25


Table A·6

•

System Front

EMil

ACUSON PIN

DESCRIPTION

QTY.

1

34261

Chassis Structure, Weldment (for reference only)

1

2

46602

PCB Assy, ZDL

1

3

38072

PCB Assy, ZIP

1

4

40657

Grounding Block. DL

2

5

(N/A)

Scr, 4-40 x .375"

4

6

37926

Assy, ECG Module

1

7

37927

Assy, HPR Module

1

8

37904

Physio Bezel, Blank

1

9

40442

Scr, 8·32 x .5 Cone SEM

34

10

37997

Assy, ZDL/MUX Cover

1

11

40374

Assy, MC, Secondary Barrier

1

12

40401

Scr, 4-40 x .375, Flat

4

13

40491?

Assy, DL/IP

1

14

40365

Bezel 256 Secondary Barrier

1

15

40400

Scr, 6-32 x 7/16 slotted captive

2

16

40367

Cap, Secondary Barrier

1

17

37824

Plate Aux-CW (Not Labeled in diagram)

1

18

39716

Headphone (Not Labeled in diagram)

1

19

46551

, Forward Trim

1

20

37766

, Front

1

21

11554

Kepnut,8-32 18/8 w / Lock Washer

5

22

39019

Assy, Physio Shroud

1

23

46485

Bracket, Ground Jack, Aux CW

1

24

37914

Cable Assy, AP /Headphone/Speaker

1

25

34804

Cable Assy, Aux CW Interface

1

26

39939

Z, Assy, Front Storage

1

27

48425

Scr, 8-32 x 3/16

7

28

39987

Assy, Tilt & Swivel

1

29

( N/A)

Ser, 8-32 x 3/4 Cone SEM

4

A-26


1096

Tum the page over for Casters

1096

Service Manual

A·29


Table A-7

Casters

EM'

ACUSON PIN

DESCRIPTION

OTY.

1

46532

Casler, 6" Swivel & Brake Darcor

2

2

46524

Yoke, Rear Caster, Right

1

3

46523

Yoke, Rear Casler, Left

1

4

46531

Casler, 8" Darcor

2

5

46553

Plale, Hubcap, Retention

2

6

49366

Hubcap, Rear Wheel

2

7

47227

Scr, 1/2-13 x 4'" Hex

2

8

47228

Scr, 1/4-20 x 1.2S" Hex

6

9

47737

Washer, 1/2'" FLat

2

10

47726

Nut. 1/2-13 Nyl Lock 18/8 SST

2

11

12120

Wshr, 1/4'" Flat

14

12

42128

Hex Nut. Nylon 1/4-20, Nypalch

14

13

47731

Scr, 1/4-20 x 7/8" Hex

4

14

47229

Scr, 1/4-20 x 17/8" Hex

4

A-30

"lv-··


1096

PL

•

(LEFT SIDE, NOT SHOWN)

7 2 PL

6

2 PL

(FRONT)

4 PL

INSIDE

PL

2 PL

fOR SERVICE USE! NOT INTENDED fOR MANUFACTURING PURPOSES

I

12

8 PL r------I

Clc:uson

COPYRIGHT 1996 ACUSONf------------1 TITlE CORPORATION. ALL RIGHTS RESERVED. THIS EXPLODED VI EW DOCUMENT SHALL NOT BE ' COPIED IN WHOLE OR IN CASTERS PART, I NCLUD I NG 1------------1 ELECTRONICALLY. FIGURE NO. A8

I

APPENDIX B

Warranty and Service

1096

Warranty and Limitations of liability

B-2


B-6

Customer Service

B-6

Service Manual

B-1

Appendix B • Warranty and Service

This appendix explains the Acuson Aspen Ultrasound system

warranty and describes the procedures to follow when you have a question or a problem.

WARRANTY AND LIMITATIONS OF LIABILITY . The following is a duplicate of your actual warranty certificate. 1. Acuson warrants that the equipment listed on the front of your installation certificate (the "Equipment") will be free from defects in materials and workmanship for a period ending twelve (12) months from the effective date shown on the front of the installation certificate. 2. ACUSON DUTIES

Commencing on the effective date shown on the front of this document, Acuson shall have the following duties under this Warranty: 2.1 Scheduled Preventive Maintenance. During the term of this Warranty, Acuson shall provide preventive maintenance for the Equipment, including, without limitation, those actions which Acuson considers necessary to ensure proper operation of the Equipment, not less frequently than an annual calibration, during Acuson's normal working hours, 8:00 a.m. to 5:00 p.m. local time Monday through Friday, except for recognized holidays ("Prime Period of Maintenance" or "PPM"). Preventive maintenance may be performed by Acuson concurrently with remedial maintenance under this Warranty and, in that event, may be unscheduled. Such preventive maintenance may be provided via telephone modem access to the Equipment or on site, at Acuson's discretion. 2.2 Remedial Maintenance Durin!; PPM Hours. Acuson will provide remedial maintenance necessary to maintain the Equipment in good working order upon Customer's request for service, which request may be oral. Such remedial maintenance may be provided via telephone modem access to the Equipment or on site during PPM hours, at Acuson's discretio'!. 2.3 Remedial Maintenance Outside PPM Hours. Remedial maintenance will be performed outside PPM hours at Customer's request only, at an additional charge for overtime labor, travel and expenses, as applicable. 2.4 Other Acuson Duties. Acuson will provide at no charge to Customer, replacement transducers for those transducers identified on the front of the installation certificate (except for those damaged due to the events described in Paragraph 3(f)), a discount on transducers replaced due to damage from any cause, all other necessary replacement parts for maintaining the Equipment (except for operating supplies and consumable parts), Acuson's 99% Uptime Guarantee, discounts on selected future option punchases, and operating system software updates in accordance with

B-2

Acuson -Aspen Ultrasound System

1096

warranty and Limitations of Liability

Acuson's Software'License Update Policy (described in Paragraph 9). All replacement parts, when furnished, will be new parts or rebuilt parts equivalent in the judgment of Acuson to the new parts when used in connection with the Equipment. All replaced parts shall become the property of Acuson. 3. EXCLUSION FROM MAINTENANCE DUTIES Acuson shall have no obligation to provide maintenance service or replacement parts on Equipment in connection with: (a) any intentional or negligent acts or omissions of Customer's employees, agents or invitees, (b) attempts to repair or service the Equipment made by persons other than Acuson's personnel without the prior approval of Acuson, (c) use of special attachments or devices not provided by Acuson in connection with the Equipment, (d) misuse of the Equipment including, without limitation, use of the Equipment for any application or function for which it was not designed; (e) damage resulting from use of operating supplies or consumable parts not approved by Acuson; (f) transducer failure due to events such as cracking from high impact drops, cable rupture from rq1ling equipment over the cable, and other accidental causes; (g) transducer failure due to events such as damage or delamination from cleaning with materials or methods not approved by Acuson; (h) failure or damage caused by any hardware or software not manufactured and installed by Acuson that is installed on the Equipment; or (I) maintenance required due to damage to the Equipment resulting from (a) transportation by .Customer, (b) causes (other than ordinary use) within the reasonable control of Customer, or (c) any Excusing Event as defined in Paragraph 5 of this Warranty. Acuson will not replace transducers solely for the reason that they have discolored. 4. RESPONSIBnmES OF CUSTOMER In connection with the Aspen system, the Customer may recieve a modem which assists Acuson personnel to access the mainframe to perform Acuson's duties under this Warranty. The Customer is responsible for providing a dedicated analog telephone line suitable for connection to the modem. The Customer is also responsible for replacing modems that are lost or damaged. Customer shall proVide Acuson personnel with reasonable access to the Equipment for purposes of maintenance pursuant to this Warranty. Such access includes connection via the supplied modem and Customer's telephone line. If reasonable access is not proVided to Acuson representatives, the Customer will be billed at the then prevailing rate for labor all the time the Acuson representative is denied access to the Equipment at Customer's location. Customer sha1l pay within 30 dayS of invoice all charges based upon Acuson's then applicable rates for all work requested by the Customer which is outside the scope of this Warranty, including without limitation, maintenance services arising out of any of the causes listed in Paragraph 3 of this Warranty. Whenever remedial maintenance is prOVided outside PPM hours in accordance with Paragraph 2.3, Customer shall provide a

1096

Service Manual

B·3

Appendix B • Warranty and Service

knowledgeable representative on site with signature authority to accept the satisfactory completion of work performed and to authorize billing. Customer shall use any parts supplied by Acuson only in the Equipment with the serial numbers listed on the front of this Warranty and with no other system or Equipment. 5. EXCUSED PERFORMANCE Acuson will not be required to perform its obligations under this Warranty, nor will it be liable for its failure to perform such obligations, if such performance is prevented, hindered, or delayed by reason of any cause or causes beyond the reasonable control of Acuson ("Excusing Event") including, without limitation, labor disputes, strikes, other industrial disturbances, acts of God, floods, shortages of materials, earthquakes, casualties, war, acts of the public enemy, riots, insurrections, embargoes, laws, blockages, actions, restrictions, and regulations or orders of any government, government agency or subdivision. 6. WARRANTY; DISCLAIMER OF WARRANTY

6.1 Warranty; Qisdajmer of Warranty: Acuson warrants that (a) Acuson will provide the duties described in Paragraph 2 of this Warranty and (b) the Equipment will be free from defects in material and workmanship at the time of installation. THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WTIHOUT LIMITATION TIlE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. 6.2 ReInes!)' In the event of Acuson's breach of any warranty or obligation under this Warranty, Customer's sole remedy and Acuson's sole obligation shall be to make all necessary adjustments, repairs, and replacements in accordance with the of this Warranty and to replace any parts installed pursuant to this Warranty which are defective at the time of installation. 7. LIMITATION OF UABIUTY ACUSON SHALL HAVE NO LIABILITY UNDER THIS WARRANTY FOR ANY LOSS, DAMAGE OR EXPENSE OF ANY KIND WHATSOEVER CAUSED BY TIlE EQUIPMENT OR ANY DEFECT THEREIN, niE USE OR MAINTENANCE THEREOF, OR ANY SERVICING OR ADJUSTMENTS mERETO, NOT EXPRESSLY COVERED BY nilS WARRANTY. ACUSON SHALL IN NO EVENT BE LIABLE FOR ANY INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES OF ANY NATURE WHATSOEVER INCLUDING, BUT NOT LIMITED TO, LOSS OF USE OF THE EQUIPMENT, LOSS OF IMAGES, LOSS OF DATA, OR LOSS OF PROFITS. 8. EQUIPMENT LOCATION All Equipment is located at Customer's address on the front side of this Warranty unless otherwise set forth on the front side of this Warranty. Any subsequent resale or removal to a new location without prior approval from Acuson will result in automatic cancellation of this Warranty.

B-4


1096

Warranty and Limitations of Liability

9. ACUSON SOFTWARE LICENSE UPDATE POLICY Acuson will license at no charge Operating System Software Updates which require no hardware changes and which solely enhance previously purchased capabilities of the system. Operating System Software Updates which provide new features or capabilities or require hardware changes will be offered at purchase prices established by Acuson. Acuson retains the sole right to determine whether an Update represents an enhancement of a previously purchased capability or a new capability for which the Customer will be charged. 10. MISCELLANEOUS 10.1 Assignment. Customer's rights and obligations under this Warranty shall not be assignable by Customer in full or in part, by operation of law or otherwise, without the prior written consent of Acuson. 10.2 Waiver. Any forbearance, failure or delay by Acuson in exercising any right, power, or remedy hereunder shall not be deemed tobe a waiver of such right, power or remedy, any single or partial exercise of any right, power or remedy by Acuson hereunder shall not preclude the further exercise thereof, and every right, power and remedy of Acuson shall continue in full force and effect until such right, power or remedy is specifically waived by an instrument in writing executed by Acuson. 10.3 Written This Warranty supersedes any prior agreements, written or oral, between the parties, contains the entire understanding between the parties and except as provided herein, may be amended or altered only by execution of an instrument in writing. 10.4 Governing Law. This Warranty shall be governed by the laws of the State of California, applicable to contracts between California residents entered into and wholly to be performed in California. 10.5 Attorneys' Fees. If any legal action or proceeding is brought for the enforcement of this Warranty or because of any alleged dispute, breach, default or misrepresentation in connection with any of the provisions of this Warranty; the successful or prevailing party or parties shall be entitled to recover reasonable attorneys' fees and other costs incurred in that action or proceeding, in addition to any other relief to which such party may be entitled. . 10.6 Unenforceable Provisions. If any portion of this Warranty shall be determined to be invalid and unenforceable, the remainder shall be valid and enforceable to the maximum extent possible. 10.7 Notices. All notices, requests, demands, and other communications under this Warranty shall, unless otherwise provided herein, be in writing, and shall be deemed to have been duly given on the date of service if served personally, or upon receipt if sent by certified or ed mail, postage prepaid, to the address of the receiving party set forth on the front of this document.

1096

Service Manusi

8-5

AppencDx 8 - Warranty and Service

PREVENTIVE MAINTENANCE Acuson's Preventive Maintenance Procedure helps ensure warranty customers continued reliability and performance of the Acuson system through regularly scheduled performance checks against system specifications. Normally, Acuson, or its authorized agent, will the customer to schedule periodic Preventive Maintenance during the Warranty. Preventive Maintenance is also included in other service contracts from AcUson available to customers at warranty expiration. Performance of Preventive Maintenance by individuals other than authorized Acuson Customer Engineers or Acuson authorized agents may void your warranty. Customers not covered under an Acuson Protection Plan will see the following message on the Acuson system screen when Preventive Maintenance is required: PREVENTIVE MAINTENANCE OVERDUE

A phone number for scheduling a Preventive Maintenance visit also appears.

CUSTOMER SERVICE Acuson's Regional Customer Service phone lines are available 24 hours a day, seven days a week, for scheduling system service, help with service contract pricing, Or questions about system operation. See "ing Acuson" on page xiii for the address and phone

number of Acuson Customer Service in your region.

8-6


1096

Aspen™


Index

cc:uson

Index

Numerics

20 data Path 2-23 A

AC Power Distribution 3-4 Accessing Customer Menu 6-2 Acquisition Processor Boord 2-37 AEGIS system 2-31 Air filterlocations 1-13 APD 2-12 Apodizer Board 2-12 AQP 2-37 Aspen System Front Input and Output Connectors 1-10 Aspen System Parts List 8-2, 8-4 Aspen System Rear Input and Output Connectors 1-9 Allaching Peripherals I-IS Audio 2-34 Audio Processor Board 2-41 AUX 2-12 Auxiliary Continuous Wave Doppler

Board

2-12

B Baseband Quadrature Board 2-12 BBQ 2-12 C Cables and Wire Harnesses 8-2, 8-4

Caring for the System 1-12 Caring for Transducers 1-14 Causes of Failures 5-4 COM 2-37

0796

CleaningAirFilters 1-13, 7-4 Cleaning and Sanitizing the System 1-12 Color Doppler Data Path 2-27 Color Reconstruction And Processing

Board 2-37 Common Symptoms and Fixes 5-6 ing Acuson xv CRP 2-37 Customer Diagnostic Menu 6-2 Customer Diagnostics 7-11

o DAQ 2-38 DBL 2-13 DC Diatribution 3-7 DC Power Supply 3-10 DCC 2-13 Diagnostics

by 6-6 PowerOn 6-6 5-2, 6-6 DIMAQ Integrated Ultrasound Workstation 2-20 DIMAQ workstation Assemblies 2-36 DIMAQ Workstation Block Diagram 2-22 Distribution Board Lower 2-13 Distribution Board Top 2-18 DL-type Transducer Interconnect Board 2-17

Chassis Hard ware 8-6 Cine Data Memory Board 2-37

Doppler Acquisition Board 2-38 Doppler Processing 2-10 Doppler Spectral Processor Board 2-38

Cine Operation 2-31

DSP 2-38

Service Manual

Index·1

Index

Dual Channel Controller Board 2-13

E ECG / Physio Module 2-38 Electrical Safety Requirements 1-5 Electrical Verification 7-6 Electrocardiogram Module 2-38 ErrorCodes 5-12 Error Messages 5-19 F

FEC 2-39 Flow Estimator Buffer Board

2-41 Flow Estimator Calculator Board 2-39 Following Basic Precautions 1-12 Function or Format Problems 5-16 Fuses 3-6 G

Gain and Processing 2-10 General Approach 5-6 Identifying PCB Type, Version and Revision 1-11 IFD 2-13 lGD 2-13 Image Quality Problems 5-18 Input/Output Board 2-39 Instrument Input Power Rating 1-6 Intermediate Frequency Detector

board 2-13 Interpolating Gain Driver Board 2-13 lOB 2-39 Isolated accessory outlet breaker (AUX)

1-7

-

Isolated Accessory Outlets 1-6 Isolation Transfonner Box

3-14

Isolation Transformer circuit

breakers 1-7

MP Transducer Interconnect

Board 2-18 MP-type Transducer Interconnect Board 2-18 MXK 2-14

o Operational Verification 7-8

P Paris List 8-1 Eeripheral Interface Cable Assemblies 8-8 Peripherals Power 3-5 Physio Signal Processing 2-33 Power Configurations 3-4, 3-5 Power Down Sequence 3-9 Power On Self Diagnostics 7-11 Power Sub Assemblies 3-10 Power Supplies 8-8 Power Supply Architecture 3-2 Power Supply Sync 3-6 Power Supply Troubleshooting Guide 5-7 Power Up Sequence 3-8 Power Usage 3-15 Preventive Maintenance 7·1,

7-2


Program 806 Primary AC Wiring 3-3 Printed Circuit Boards 8-9 Programmable Power Supply 3-13 Q

K Keyboard Functionality test 6-4

Quick Tips 5-5

M

RCV

Main DC Power Supply 3-10 Main Power Supply 3-10 Mains input breaker 1-7 maintenance, preventive B-6 Mechanicallnspection 7-5

Index-2

Memory Expansion Board 2-14 MEX 2-14 microcode 2-14 Misc. Paris 8-10 M-mode Data Path 2-29 Monitor 8-8 Moving the System 1-15

R 2-14 Receiver Board 2-14 Reception 2-8 Reconstruction Processor Board 2-39 Removing and replacing FRUs 4-3 Removing lOB 4-7


0796

Index

Removing Monitor 4-19

T

Removing Side Cosmetic s 4-5

Technical Assistance 5-2

Removing the AC Box 4-17 Removing the Isolation Transformer 4-18 Removing the Main Power supply 4-16 Removing the Programmable Power Supply 4-15 Removing the Scan Converter Cover 4-6 Removing the Scanner Cover 4-10 Removing Interface Assembly 4-20 Removing ZDL and ZIP 4-12 Reviewing Electrical Requirements 1-5 Reviewing Environmental R6<juirements 1-4 Reviewing System Requirements 1-4 RP 2-39

Terminator Board 2-15

5 Scan Converter 2-21 Scanner 2-3 Scanner Assemblies 2-11 Scanner Block Diagram 2-5 Scanner Control 2-6 Scanner Control Processor Board 2-19 Scanner Timing Generator Board 2-15 SOL 2-14 service, customer B-6 Spectral Doppler Data Path 2-25 STG 2-15 Summing Delay Line Board 2-14 5VC 2-40 Symptom Types 5-3 Syscon & Video Controller Board 2-40 System Circuit Breakers 1-7 System DC Power Distribution 3-5 System Lock-up Problems 5-17 system monitor 7-7 System Monitor Controls 7-7 System Troubleshooting 5-2

0796

Service Manual

Theory of Operation 2-6 Transducer Selection 7-8 Transmission 2-7

Transmit Delay Board 2-16 Transmitter Board 2-16 TRM 2-15 U

UIC 2-40 Ultrasound Basics 2-3 Interface 2-35 Interface Assemblies 8-10 Interface Controller 2-40 Using Input and Output Connectors 1-8 V VDT 2-15 Video Detector Board 2-15 Video Problems 5-15 Video Processor Board 2-40 Visual Inspection 7-3 VPB 2-40 W warranty B-2 to B-5 Waveform Processor Board 2-41 WFP 2-41 X

XDY 2-16 XMT 2-16

Z ZAP 2-41 ZDL 2-17 ZDT 2-18 ZFEB 2-41 ZIP 2-18 ZS 2-19

Index-3

Index

Index-4


0796

Theory of Operation

Acuson Confidential

To lOB & UIC

PowER ON

FROM

lOB

DC VOLTAGES

115VAC

....

MONITOR

PPS

F"JglIJ'e 1

59157 Rev. X3 Beta

AC Power Distribution

service Training Manual

6-7

I

j j j j j j j j j j j j j j j j j j j j j j j j j j j j J

Theory of Operation

Acuson Confidential

System DC Power Distribution

There are two DC power supplies in the system, the Main PS and the PPS. Refer to Figure 2, "DC Distribution," on page 9.

Main Power Supply (DC Generation)

The Main PS provides all but one of the system DC voltages. The following major subassemblies are powered by this supply: •

Scanner

•

DIMAQTM integrated ultrasound workstation

•

PPS

•

interface

•

Fans

•

Disk drives


The PPS provides the onlY,ot!ier DC_voltage. This DC voltage is software programmable for predetennined increments from 30 to l50VDC, and is used by the transmitter boards (XMTs). This is done to minimize heat dissiboards.aDa to increase overall system efficiency. pation on the

Fuses

There aie-Tfield repfaeeable fuses in the system. Both are in the DC Distribution, the PS in the power supply area of the system. Fl fuses a 5VDC !ine'J;"d by the Interface Controller board (UIC). F2 fuses another SVDC line, which powers the hard drive and MO drive.

Main

NOTE:

(

(

Be sure replacement fuses are of 1I1e same rating and type as the fuses removed.

Power Supply Synchronization

The Main PS receives a 50kHz sync signal from the lOB, which is used to synchronize the switching frequencies within the Main PS. This helps reduce power supply noise in the image.

Power Fail Signal

The DC power supply provides a power fail signal, which allows the Aspen Ultrasound system to shut down gracefully in the event that AC power is intemlpted. The DC power supply. can maintain power for 20 milliseconds after AC power is lost

( 5ervice Training Manual

59157 Rev. X3 Bela

Theory 01 Operation

Acuson Confidential

,

AC POWER RELAY-eormtoL

(lO _ _

,-----,

MAIN

SCAN

DC

.--....oofC

POWER

F.....S

F...... +12V

sc

-12VSC

UIC

LIGIffS +S.W SOrIR

SWITCHES

+7.JY SCNR

+ISVSCNR

+3OOVIlC

PPS AC

, .....

ISOLA11ON TRANSI'llRMIlR

BOX

F"agure 2 DC Distributioo

59157 Rev. X3 Beta

Service Training Manual

6-9

Acuson Confidential

Theory 01 Operation

Power On

When the system is plugged into an AC power outlet and the main circuit breaker is switched on, standby power (V STANDBY) is supplied to a circuit on the lOB, which monitors the system Power switch. Pressing the Aspen Ultrasound system Power switch sends a power on request to the lOB. The lOB latches the power on request and sends it to the Main PS. The Main PS then turns on all system DC power, which allows the system to power on. The 12V peripheral power comes up in about 150 milliseconds and closes the relay in the Isolation Transformer Box. This applies AC power to the primary of the Isolation Transformer, which in turn brings up the monillir, PPS, and peripherals that are connected to the accessory outlets.

Sequence

During the off-tD-on transition phase of the power supplies, before power is stable, a reset signal is generated by the lOB and is applied to the Scanner and the DIMAQ workstation. Once the power is stable, the system reset is removed by the lOB and the system begins its boot sequence. Refer to Figure 3, "Aspen Ultrasound System Power on/off SCquencei" on page 11 for a simplified diagram of this operation. -. .

Power Off

The following power off sequence is needed to power off the system in a safe and repeatable manner, allowing the system to store important information in battery-backed RAM, and to store AEGIS exams to disk without damaging the system's internal hard drive.

Sequence

After the Aspen Ultrasound system is powered on, pressing the system Power switch resets the latch on the lOB board and removes the power on request. This causes an interrupt to be sent to the system controller indicating a power off request bas been initiated. The Aspen Ultrasound system then performs a power off sequence that includes completing disk accesses, closing open files, and other required housekeeping. When the housekeeping functions are complete, the system controller sends a power off request to the lOB, and the lOB es the request to the Main PS. All DC voltages are turned off, thus shutting down the system. NOTE:

6-10

Never tum off 1I1e power by pulling 1I1e plug from 1I1e wall outlet or tuming off 1I1e Main circuit breaker, as it may cause hard drive or MO failures and 1I1e loss 01 unsaved AEGIS system exams. Always tum off 1he system by using 1he system Power switch.

Service Training Manual

59157 Rev_ X3 Beta

c

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Theory 01 Operation

Acuson Confidential

The system also powers off if one or more of the following occurs: •

AC input power is lost

•

The Main PS detects a fault, such as fan failure or over temperature condition

•

The main circuit breaker opens

As long as the system is plugged into the wall and the main circuit breaker is on, the +5VDC standby voltage (VSTANDBy) to the lOB stays on and monitors the system Power switch for the next power on request. '.,.

PWR ON REQUJlSI"" ..

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DC

POWER

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MAIN

POWER SUPPLY

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BREAKER

AC POWER INPtfI'

FtgUI'e 3 Aspen Ultrasound System Power OnJOft'Sequence

6-11

Power Sub AssemblieS

AcuSOn ConfidenUai


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The architecture of the two major power supplies is given below.

Main Power Supply

The Main PS is the hean of the power distribution system and can be fully synchronized with other system hardware. It is a highly-integrated, compact, precise power supply. It switches automatically to accept input power from 85 to 264VAC. The AC input is split, sending AC input voltage to the DC generating pan of the power supply, and also directly to the Isolation

Transformer Box. DC voltage generation within the Main PS is achieved with three isolating downconverters as follows:

High output DC Voltages (HODC)

The high power downconverter supplies the following HODC voltages:

+S.OVDC Scan Converter Digital,(Heavy Duty) +S.OVDC Digital'(Heivy Duty) +12VDC Peiipheral , -, +8 10 16VDC variable fan drive voltage +12VDC :"'-

(

"

The 3OOVOC'downconverter provides the following HODC voltage:

1+300VDC

An error code I or 2 (HODC errors) on the lOB 7-segment display indicates a problem on one or more of the high power or 300VDC downconverter supplies. Clean Output OC Voltages (COOC)

The clean output downconverter supplies the following CODC voltage: +S.OVDC Analog

+7.5VDC -7.5VDC +12.0VDC -l2.OVDC +lS.OVDC -lS.OVDC

An error code of 3 or 4 (COOC) on the lOB 7-segment display indicates a problem on one or more of the clean output downconverter supplies.

EH2

5ervice Training Manual

59157 Rev. X3 Beta

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Power Sub Assembles

Acuson Confidential

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Figure 4 Main Power Supply (MOl) Coonector Pinouts 6-'4

SeMce Training Manual

59157 Rev. X3 Beta

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