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Step 1520-15
The problem lies within the system hardware or with the line voltage/wiring.
Shut down the system and remove the power cable from the system.
Exchange the following FRUs in order:
1. Power cables to system board.
2. System board.
3. Power backplane.
Restart the system and perform error log analysis.
Do you receive an SRN indicating a voltage sensor out of range?
NO
YES
58
Service Guide
The last FRU exchanged is defective. Go to "MAP 0410: Repair Checkout" in
the RS/6000 Eserver pSeries Diagnostic Information for Multiple Bus
Systems .
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" on page 56.
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 50 in
this MAP and follow the instructions for the new symptom.
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