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NO
Go to "Step 1521-6."
Correct the problem. Go to "MAP 0410: Repair Checkout" in the RS/6000 Eserver pSeries
YES
Diagnostic Information for Multiple Bus Systems.
Step 1521-6
1. One of the following may be defective:
v Power supplies
v VRMs
v Memory DIMMs
v System backplane
2. To test each FRU, exchange the FRUs that have not already been exchanged in the following order.
v Primary power supply
v Redundant power supply (if installed)
v VRM at U0.1-P1-V1
v VRM at U0.1-P1-V2
v VRM at U0.1-P1-V3
v Memory DIMMs
v System backplane
3. Unplug the power cables from the system unit.
4. Exchange one of the FRUs in the list.
5. Connect the power cables to the system unit.
Do the ac power LEDs on the power supplies come on within 30 seconds after applying ac power?
NO
Reinstall the original FRU.
Repeat this step until the defective FRU is identified or all the FRUs have been exchanged.
If the symptom did not change and all the FRUs have been exchanged, call your support
representative for assistance.
Go to "MAP 0410: Repair Checkout" in the RS/6000 Eserver pSeries Diagnostic Information for
YES
Multiple Bus Systems.
Step 1521-7
1. Unplug the power cables from the system unit.
2. Exchange the operator panel assembly.
3. Plug the power cables into the system unit and wait for the OK prompt located on the operator panel
display.
4. Turn on the power.
Does the power LED on the operator panel come on and stay on?
NO
Reinstall the original operator panel assembly. Go to "Step 1521-8."
Go to "MAP 0410: Repair Checkout" in the RS/6000 Eserver pSeries Diagnostic Information for
YES
Multiple Bus Systems.
Step 1521-8
1. Turn off the power.
2. Unplug the power cables from the system unit.
Chapter 3. Maintenance Analysis Procedures (MAPs)
79
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