Service manual

3-4 AlphaServer GS80/160/320 Service Manual
Table 3– 1 Power Problems (Continued)
Symptom Possible Cause Indicators
System or
part of
system does
not power
up
Logic voltage problems
- PSM faiure
- Main power module failure
- Auxiliary power module failure
PSM/main/aux
LEDs not
normal
PSM
qbb_dc_good
LED off/ main
power LEDs
not normal
PSM
qbb_dc_good
LED off/ aux
power LEDs
not normal