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Exchange the following FRUs in the order listed.
1. VRM at U0.1-P1-V1
2. VRM at U0.1-P1-V2
3. VRM at U0.1-P1-V3
4. System backplane
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" on page
82..
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 43 and follow the instructions for the new
symptom.
Chapter 3. Maintenance Analysis Procedures (MAPs)
83
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