A PPS has reported the loss of an AC input phase, only two phases
of the three phase power are being detected. The failure can be internal to
the PPS, the AC line cord, or the customer utility.
The primary power supply (PPS) must be powered off before continuing
at the next step. Return to the repair screen that sent you here to replace
the PPS FRU, but stop when the PPS is powered off. Then return here and go
to the next step.
Determine if the primary power supply (PPS) is receiving proper
three phase power. Reference the customer power checks in the Install information
to do the checks. Do all three phases check good?
Yes, the PPS is failing. Return to the repair procedure to complete
the replacement of the PPS.
No, correct the problem, then return to the repair procedure to do
a pseudo repair of the PPS. Note: A
pseudo repair means that you use the normal procedures to replace
the FRU, but do not exchange the original FRU with a new FRU. You
still must power off, disconnect cables, and physically remove the
FRU as guided. This ensures the error conditions are properly reset
and all verification tests including FRU power on self tests are correctly
run.