GE MEDICAL SYSTEMS
D
IRECTION 2392751-100, REVISION 3VIVID™ 4 SERVICE MANUAL
7-50 Section 7-3 - Performing Front End (FE) Diagnostics
3) Trackball to each of the following buttons in turn (in the order stated below) and press Select to
perform the specific test:
• Normal channels: Test the output channels from the input channels, as described in the
Normal Channels Diagnostic Tests below.
• Expanded low channels: Tests output signals in CW-Mode only, when the input channels are
connected to the output channels, as described in the Expanded Low Channels Diagnostic
Tes ts section, on page 7-55.
• Expanded high channels: Tests the output signals from the input of the high channels, as
described in the Expanded High Channels Diagnostic Tests section, on page 7-56.
• Port Test: Performs a general logic test, as described in the Port Test section, on page 7-57.
• Advanced board tests: The advanced board tests are described in the Advanced Board Tests
section, on page 7-59. This includes procedure instructions for performing the following tests:
• TEE Probe Control on page 7 - 59
• AC Power Input Test on page 7 - 61.
• LVPS Voltage Test on page 7 - 63.
• HVPS Voltage Test on page 7 - 64.
• Temp Test on page 7 - 65.
• Show History on page 7 - 66.
7-3-9-2 Normal Channels Diagnostic Tests
Tests the output channels from the input channels. This test setting is used for all modes, except
CW-Mode.
The Normal Channels Diagnostic Tests check each amplifier output against the predefined output level.
This system test is performed in Phased Array Probe Simulation mode. The FEC board injects analog
signals to the Tx amplifiers inputs after the Tx switch. The test lasts approximately 4 minutes.
Note: System re-boot is required if the tests are not being performed in the sequence described in the
Performing Front End (FE) Diagnostics section, on page 7-5.
1) Disconnect all the probes.
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) Trackball to Pulser 1 (High Voltage Power Supply [HVPS] +/-80V) or Pulser 2 (Low Voltage Power
Supply [LVPS] +/-40V) and press Select.
Trackball to the Normal Channels Test button and press Select. The normal channels diagnostic test
is performed, and the test results are displayed in the Report dialog box, as shown below:
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