DOM MB V5.1 Diagnosis
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Board ID:
V5.1 001311
Step:
Vendor Firmware Load
Symptoms:
March 29, 2005, Local Coincidence Loopback Failure
Analyst(s):
G. Przybylski
Analysis Procedure(s):
5/3/05: Injected test pulse to loop input; Observed waveforms at TP9,
TP10, R66, R75.
Z1 waveforms bad
Root cause:
Faulty Z1, power splitter, probably open at pin-1 port.
Mitigation:
Replace, retest and mainstream
Disposition:
Repair pending 3/4/05
Any Other Information:
Traveler March 29, 2005