GE MEDICAL SYSTEMS
D
IRECTION 2392751-100, REVISION 3VIVID™ 4 SERVICE MANUAL
Chapter 7 - Diagnostics/Troubleshooting 7-39
7-3-8-5 TR Switch Test
If a solid line is observed during scanning, it may indicate a bad TR switch. This test checks the transmit
switches.
1) Connect a 3S probe and lock it in place.
Note: To avoid irrelevant failure results, it is imperative that the probe be in good condition.
2) Access the F.B. tab of the FE Diagnostics dialog box, as described in the Accessing the Front Board
Assembly Options section, on page 7-26.
3) In the Select Socket area of the F.B. tab, trackball to the socket to which the 3S probe is connected:
• Trackball to Left, Right or Center and press Select.
4) Trackball to Pulser 1 (High Voltage Power Supply [HVPS] +/-80V) or Pulser 2 (Low Voltage Power
Supply [LVPS] +/-40V) and press Select.
5) Trackball to the TR Switch Test button and press Select. The TR switch test is performed, and the
test results are displayed in the Report dialog box, as shown below:
Figure 7-21 Report Dialog Box - TR Switch Test
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