General Maintenance
Table 4-4: Symptoms and causes (cont.)
Symptom Possible Sources or Recommended Detailed Troubleshooting Procedure to follow
Fails any of these Power On
Diagnostics:
Eye Hardware Revision
Eye Board Cable Version
Eye Register Readback
Eye Board Power Supply
Eye Board Cal EEPROM
Review messages in diagnostic log
Perform primary power supply checks
Perform secondary power supply checks
Run Advanced Diagnostics and look for other information
Replace the EYE/PHY board
Fails any of these Power On
Diagnostics:
3 Gbps Revision
3 Gbps Register Readback
3 Gbps Voltage Test
Review messages in diagnostic log
Perform primary power supply checks
Perform secondary power supply checks
Run Advanced Diagnostics and look for other information
Replace the 3G/JIT board
Diagnostic log shows Fail on any
of these Advanced Diagnostics:
ADV_DIAG_LSS
Review messages in diagnostic log. If the waveform monitor also fails other tests as well, then
suspect main board and perform the primary and secondary power supply tests.
If only this test fails, then perform the Isolating Advanced Diagnostic Lissajous Errors procedure
to isolate the problem to main or audio board.
4–8 WFM6120, WFM7020, and WFM7120 Waveform Monitors Service Manual
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