procedure. If the system has logical partitions, perform this procedure only
from the Primary partition’s console and the system control panel.
1. Perform the following:
a. Power off the system or frame that you are working on. See “Powering On
and Powering Off the System and Logical Partitions” on page 922.
b. Remove and label all cards installed in the Processor backplane area.
c. Power on the system.
Does a power reference code occur?
Yes No
↓ Go to step 10 on page 394.
2. Perform the following:
a. Power off the system.
b. Remove power supply P02.
c. Power on the system.
Does a power reference code occur?
No Yes
↓ Go to step 5.
3. Perform the following:
a. Power off the system.
b. Reconnect power supply P02 removed in step 2 of this procedure.
c. Power on the system.
Does a power reference code occur?
No Yes
↓ Exchange the power supply P02 reconnected in this step.
This ends the procedure.
4. Go to “Starting Point for All Problems” on page 4.
This ends the procedure.
5. Perform the following:
a. Power off the system.
b. Remove power supply P01.
c. Reconnect power supply P02.
d. Power on the system.
Does a power reference code occur?
Yes No
↓ Exchange the power supply P01.
This ends the procedure.
6. Perform the following:
a. Reconnect power supply P01.
b. Remove one of the AMDs from the system that was not previously
removed during this procedure. (Disregard a AMD SRC if it occurs during
this step.)
c. Power on the system.
Does a power reference code occur?
Power PIPs
Chapter 3. Problem Isolation Procedures (PIPs), Failing Items, and Symbolic FRU Isolation 393
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