GE Vivid 7 Service Manual
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GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 7 - Diagnostics/Troubleshooting 7 - 69 7-8-3-4 System Test Screen Description 7-8-3-5 Test Loops, System Figure 7-74 System Test Screen, Upper Part Table 7-6 Test Loops, System - Test All, System - Break (FEP1) FIELDKEYDESCRIPTION TEST LOOPS -IN SOME CASES YOU MAY WANT TO DO THE SAME TEST SEVERAL TIMES. ENTER A NUMBER TO INDICATE HOW MANY TI MES YOU WANT THE TEST TO REPEAT ITSELF. DEFAULT VALUE = 1.. SYSTEM TEST ALL USE TEST ALL TO START A SEQUENCE OF ALL THE TESTS AVAILABLE IN THE TEST SCREEN. THE DIAGNOSTIC TEST IS DONE IN THIS SEQUENCE ON UNITS WITH FEP1; 1.PC2IP 2.IMP (IMAGE PORT BOARD) 3.VME (VME DATA BUS ON THE BACK PLANE) 4.SDP (SPECTRUM DOPPLER PROCESSOR) 5.RFT (RADIO FREQUENCY & TISSUE BOARD) 6.FEC (FRONT-END CONTROLLER BOARD) 7.BF (BEAMFORMER BOARDS) 8.RX (RECEIVER BOARD) 9.TXP (TX POWER) NOTE: Relay Board (RLB) and Chain are not tested in this test. NOTE: The Transmitter Board (TX) don’t have its own test, but some parts of the TX board is tested during the FEC test. NOTE: If the system must be rebooted, do so. Continue with the testing from the point at which you were required to stop. SYSTEM BREAK IF YOU HAVE STARTED A LOOPED TEST, YOU MAY SELECT BREAK TO STOP THE TEST. THE TEST WILL CONTINUE UNTIL THE CURRENT TEST HAS FINISHED. System Test Loops Mode
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 7 - 70 Section 7-8 - Acquisition Diagnostics 7-8-3-5 Test Loops, System (cont’d) 7-8-3-6 Mode (Calibration/Test Screen Selection) Table 7-7 Test Loops, System - Test All, System - Break (FEP2) FIELDKEYDESCRIPTION TEST LOOPS -IN SOME CASES YOU MAY WANT TO DO THE SAME TEST SEVERAL TIMES. ENTER A NUMBER TO INDICATE HOW MANY TI MES YOU WANT THE TEST TO REPEAT ITSELF. DEFAULT VALUE = 1.. SYSTEM TEST ALL USE TEST ALL TO START A SEQUENCE OF ALL THE TESTS AVAILABLE IN THE TEST SCREEN. THE DIAGNOSTIC TEST IS DONE IN THIS SEQUENCE ON UNITS WITH FEP2; 1.) PC2IP 2.) RFI (RADIO INTERFACE BOARD) 3.) BF (BEAM FORMER BOARDS) 4.) RX (RECEIVER BOARD) 5.) TXP (TX POWER) NOTE: Relay Board (RLB) and Chain are not tested in this test. NOTE: The Transmitter Board (TX) don’t have its own test, but some parts of the TX board is tested during the FEC test. NOTE: If the system must be rebooted, do so. Continue with the testing from the point at which you were required to stop. SYSTEM BREAK IF YOU HAVE STARTED A LOOPED TEST, YOU MAY SELECT BREAK TO STOP THE TEST. THE TEST WILL CONTINUE UNTIL THE CURRENT TEST HAS FINISHED. Table 7-8 Mode (Calibration/Test Screen selection) FIELDKEYDESCRIPTION MODE The buttons in this field are used to select the Calibration Screen or the Test Screen. Calibration Select this button to select the Calibration Screen. Test Select this button to select the Test Screen.
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 7 - Diagnostics/Troubleshooting 7 - 71 7-8-3-7 “Block Schematics” with Single Tests Select one of the buttons in the “block schematics” in the upper part of the screen (or one of the duplicate buttons in the lower row of the screen) to select a particular test. Some of the tests are described after the figure below. Figure 7-75 Diagnostics Test Screen, Upper Part BLOCK SCHEMATICS, FEP2BLOCK SCHEMATICS, FEP1
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 7 - 72 Section 7-8 - Acquisition Diagnostics 7-8-3-8 Receiver Board (RX) Test 7-8-3-9 Relay Board Test NOTE: A Test Attenuator, Part Number AA200215 is needed for this test. Table 7-9 Receiver Board (RX) Test Test (Key)Sub-testsDescription RX Receiver Board (RX) Te s t A l l Activates the following tests, in s equence, see description for each sub test; - RECV0 - RECV1 RECV.0 Max Gain test for RX using FEC signal generator. RECV.1Reduced Gain test for RX using FEC signal generator. Table 7-10 Relay Board (RLB) Test Test (Key)Sub-testsDescription RLB Relay Board (RLB) Te s t A l l Activates the following tests, in sequence (see the descriptions for the tests below); 1. Conn. 1 2. Conn. 2 3. Conn. 3 Conn. 1 Max Gain test for RX using the signal generator on the Front-End Controller (FEC) and a Test Attenuator, Part Number AA200215, in left (active) probe connector. Conn. 2Max Gain test for RX using the signal generator on the Front-End Controller (FEC) and a Test Attenuator, Part Number AA200215, in mid (active) probe connector. Conn. 3Max Gain test for RX using the signal generator on the Front-End Controller (FEC) and a Test Attenuator, Part Number AA200215, in right probe connector.
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 7 - Diagnostics/Troubleshooting 7 - 73 7-8-3-10 Image Port Test When selecting the ImagePort Test, the scanner issues a test command to the local software running on the I960RP processor on the Image Port board. The test command will start the following tests; • test the interrupt based command/replay mechanism • reset the ImagePort board • test the PipeLink data fifo • test the video data fifos • test the PipeLink control fifo • test the video control fifo • test the video grabber chip Results; • Green light: - OK • Red light: - Failed 7-8-3-11 Chain (Signal Chain, RLB/RX/BF Test) NOTE: A Test Attenuator, Part Number AA200215 is needed for this test. Remember to restart the Vivid 7 after the diagnostics session. , Table 7-11 Signal Chain (TX/RLB/RX/BF) Test Test (Key)Sub-testsDescription Chain Signal Chain Test (Chain) The Signal Chain/ Data Flow test checks for er rors in the TX, RLY, RX and BF chain of data flow. Te s t A l l Not Used. TX/RLB/RX/ BF Tests data flow in Front-End Transmit Receive signal chain. If an error occurs with this test, testing should be continued in the following order; 1. BF digital and analog test 2. RX test 3. RLY test.
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 7 - 74 Section 7-8 - Acquisition Diagnostics 7-8-4 General Recommendations to Troubleshoot Noise Issues Ultrasound machines are susceptible to Electromagne tic Interference (EMI) from radio frequencies, magnetic fields, and transients in the air or wiring. They also generate EMI. The Vivid 7 complies with limits as stated on the EMC label. Ho wever there is no guarantee that interference will not occur in a particular installation. Possible EMI sources should be identified before the unit is installed. Electrical and electronic equipment may produce EMI un intentionally as the result of a defect. Some of these sources include: • medical lasers • scanners • cauterizing guns • computers •monitors •fans • gel warmers • microwave ovens • light dimmers • portable phones The presence of a broadcast station or br oadcast van may also cause interference.
GE HEALTHCARE
DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL
Chapter 7 - Diagnostics/Troubleshooting 7 - 75
7-8-5 EMI Prevention/abatement
Table 7-12 EMI Prevention/abatement
EMI RULEDETAILS
BE AWARE OF RF
SOURCES
- Keep the unit at least 5 meters (15 feet) away from other emi sources.
- Special shielding may be requi
red to eliminate interference problems caused by high frequency,
- High powered radio or video broadcast signals.
GROUND THE UNIT - Poor grounding is the most likely
reason a unit will have noisy images.
- Check grounding of the power cord and power outlet.
REPLACE ALL SCREWS,
RF GASKETS, COVERS,
CORES - After you finish repairing or updating the s
ystem, replace all covers and tighten all screws.
- Any cable with an exter nal connection requires a magnet wrap at each end.
- Install the card rack cover over the card rack.
Loose or missing covers or RF gaskets allow radio frequencies to interfere with the ultrasound
signals.
REPLACE BROKEN RF
GASKETS- If more than 20% or a pair of the fingers on an rf gasket are broken, replace the gasket.
- Do not turn on the unit until any loose metallic part is removed.
DO NOT PLACE LABELS
WHERE RF GASKETS
TOUCH METALNever place a label where rf gaskets meet the uni t. otherwise, the gap created will permit rf leakage.
or, if a label has been found in such a position, move the label.
USE GE SPECIFIED
HARNESSES AND
PERIPHERALS- The interconnect cables are grounded and r equire ferrite beads and other shielding.
- Also, cable length, material, and routing are all important; do not change from what is specified.
TAKE CARE WITH
CELLULAR PHONES Cellular phones may transmit a 5 v/m signal
; that could cause image artifacts.
PROPERLY DRESS
PERIPHERAL CABLES Do not allow cables to lie across the top of t
he card rack or hang out of the peripheral bays. Loop
the excess length for peripheral cabl es inside the peripheral bays. attach the monitor cables to the
frame.
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GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 8 - Replacement Procedures 8 - 1 Chapter 8 Replacement Procedures Section 8-1 Overview 8-1-1 Purpose of Chapter 8 This chapter holds replacement procedures for the following modules/subsystems. NOTE: Use the ESD-kit during replacing boards. WARNINGWARNINGDO NOT TOUCH ANY BOARDS WITH INTEGRATED CIRCUITS PRIOR TO TAKING THE NECESSARY ESD PRECAUTIONS: ALWAYS CONNECT YOURSELF, VIA AN ARM-WRIST STRAP, TO THE ADVISED ESD CONNECTION POINT LOCATED AT THE REAR OF THE SCANNER (TO THE RIGHT OF THE POWER CONNECTOR). FOLLOW GENERAL GUIDELINES FOR HANDLING OF ELECTROSTATIC SENSITIVE EQUIPMENT. WARNINGWARNINGTHE WASTE OF ELECTRICAL AND ELEC TRONIC EQUIPMENT MUST NOT BE DISPOSED AS UNSORTED MUNICIPAL WASTE AND MUST BE COLLECTED SEPARATELY. PLEASE CONTACT THE MANUFACTURER OR OTHER AUTHORIZED DISPOSAL COMPANY TO DECOMMISSION YOUR EQUIPMENT.
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 8 - 2 - 8-1-2 Definitions of Le ft, Right, Front and Back Figure 8-1 Definition of Left, Right, Front and Back of Vivid 7 RIGHT SIDE REAR / BACK LEFT SIDE FRONT