Step 1520-12
Shut down the system and remove all power cables from the rear of the system.
Exchange the following FRUs in the order listed:
1. Power supply.
2. Power cables to system board.
3. System board.
4. Power backplane.
Restart the system and perform error log analysis.
Do you get an SRN indicating a voltage sensor is out of range?
NO The last FRU exchanged is defective. Go to ″MAP 0410: Repair Checkout″ in
the
RS/6000
Eserver
pSeries Diagnostic Information for Multiple Bus
Systems
.
YES Reinstall the original FRU.
Repeat the FRU replacement steps until a defective FRU is identified or all the
FRUs have been exchanged.
If the symptom did not change and all FRUs have been exchanged, go to
“Step 1520-13”.
If the symptom has changed, check for loose cards, cables, and obvious
problems. If you do not find a problem, return to “Step 1520-1” on page 54 in
this MAP, and follow the instructions for the new symptom.
Step 1520-13
Check that the power outlet is properly wired and is providing the correct voltage.
Did you find a problem?
NO Go to “Step 1540-1” on page 64.
YES Correct the problem. Go to ″MAP 0410: Repair Checkout″ in the
RS/6000
Eserver
pSeries Diagnostic Information for Multiple Bus Systems
.
60 Service Guide