IBM pSeries 630 6C4 Service Manual page 132

Step 1521-11
Does the system contain two power supplies?
NO Go to "Step 1521-12".
YES Go to "Step 1521-14" on page 113.
Step 1521-12
Shut down the system and remove all power cables from the rear of the system unit.
Exchange the following FRUs in the order listed:
1. Power supply
2. CEC backplane
3. PCI riser card
Restart the system and perform error log analysis.
Do you get an SRN indicating a voltage sensor is out of range?
The last FRU exchanged is defective. Go to "MAP 0410: Repair Checkout" in the RS/6000
NO
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 1521-13".
If the symptom changed, check for loose cards, cables, and obvious problems. If you do not find a
problem, go to the "Quick Entry MAP" on page 63 and follow the instructions for the new symptom.
Step 1521-13
Check that the wall outlet is properly wired and is providing the correct voltage.
Did you find a problem?
NO Go to "MAP 1548: Processor Subsystem Problem Isolation" on page 139.
Correct the problem. Go to "MAP 0410: Repair Checkout" in the RS/6000 Eserver pSeries
YES
Diagnostic Information for Multiple Bus Systems.
112 Eserver pSeries 630 Model 6C4 and Model 6E4 Service Guide