GE Vivid 3N Pro Series Service Manual page 263

GE M S
EDICAL YSTEMS
D FK091075, R
IRECTION
7-3-7 Beamformer (BF) Diagnostic Tests (cont'd)
9) Under Auto Detect, click the Start button. Checking of the test results commences and the light
adjacent to the button flashes green and continues to flash while Auto Detect is in progress. If a fault
is detected, the flashing light changes to red and an error log is displayed listing the channel/s on
which the test failed.
Alternatively, review the information manually, using the scroll arrows on the right of the Ultrasound
Scope window to select a vector between 0 and 63. The selected vector is displayed in the Vector
# field and its test results are displayed in the Spectrum area.
Check the test results for each vector, as follows:
•
•
•
•
NOTE: If the RMS level is above or below the specified level, reboot the system, perform calibration
and repeat the test.
10) Proceed as follows:
•
•
•
•
11) When finished, trackball to the Cancel button and press Select. The FE Diagnostics dialog box is
re-displayed.
04
EVISION
Verify that the RMS level displayed in the RMS field is above 70.
Verify that the amplitude at frequency 2.5 is within a range of -5 to -20.
Verify that the amplitude at frequency 5 is below -50.
Verify that the amplitude at frequency 7.5 is below -60.
If no problems were identified, proceed to the FB tests, as described in
Assembly (FB) Diagnostic Tests" on page
If no problems were identified but the problem persists, contact your local GE Medical Systems
field engineer for assistance.
If errors were identified but the results were marginal, perform calibration, as described in
Section 6-8 "Calibration" on page
If errors were identified and the results were not marginal, verify that all image port and PCI
bridge cables are connected and functioning properly, as described in
and Function (Theory). If the problem persists, contact your local GE Medical Systems field
engineer for assistance.
Chapter 7 Diagnostics/Troubleshooting
V
IVID
7-26.
6-21, and then repeat the test.
3N P /E S
RO XPERT ERVICE
7-3-8 "Front Board
Chapter 5 - Components
M
ANUAL
7-25