Lower Transmit Bank - Pin 6 Vias (4) - GE LOGIQ E9 Service Manual

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5180483-100, R

Visual Inspection of Board (cont'd)

Troubleshooting Step 2 - Upper and Lower Transmit Bank (cont'd)

Replace the GTX Board that shows evidence of burn damage. Then run the following diagnostics:

Failure of one of these diagnostics following the replacement of the defective GTX, will typically mean

damage to one of the Front Planes. Swap locations of the Front Planes and re-run the tests to see if the

failure follows the front plane. In rare occurrences, damage has occurred to the GRX Board.

If these diagnostics pass check image quality in the near field. See:

Figure 7-199 "Check in near Field Image" on page 7-295.

Install and check image quality on all probes that may have been used during the time period that the

system began to show the transformer failure issue.

PROPRIETARY TO GE

Figure 7-198 Lower Transmit Bank - Pin 6 Vias (4)

Run T/R Channel diagnostic

Run Analog Rx diagnostics

Section 7-9 - Troubleshooting Tips

Troubleshooting