IBM i 830 Repair Manual page 409

a. Power off the frame that you are working on by removing the line cords at
the power supply. See "Expansion Tower and SPCN Controlled Expansion
Unit Power Procedure" on page 926.
b. Remove and label all cards installed in the PCI backplane area.
c. Power on the frame.
Does a power reference code occur?
Yes No
↓
Go to step 7 on page 396 of this procedure.
2. Perform the following:
a. Power off the frame that you are working on.
b. Remove power supply P01.
c. Remove the B01 assembly from the original power supply and install it on
the new power supply.
d. Install the new power supply P01.
e. Power on the frame.
Does a power reference code occur?
Yes No
↓
The Power supply P01 that you removed in this step is the failing item.
This ends the procedure.
3. Perform the following:
a. Power off the frame that you are working on.
b. Remove the new power supply P01 and replace it with the original power
supply P01, after switching the B01 assembly back to the original supply.
c. Remove power supply P02.
d. Remove the B02 assembly from the original power supply P02 and install it
on the new power supply.
e. Install the new power supply P02.
f. Power on the frame.
Does a power reference code occur?
Yes No
↓
The Power supply P02 that you removed in this step is the failing item.
This ends the procedure.
4. Perform the following:
a. Power off the frame that you are working on.
b. Remove the new power supply P02 and remove the B02 assembly. Replace
it with the original P02 and a new B02 assembly.
c. Install power supply P02.
d. Power on the frame.
Does a power supply reference code occur?
Yes No
↓
The B02 assembly that you removed in this step is the failing item.
Chapter 3. Problem Isolation Procedures (PIPs), Failing Items, and Symbolic FRU Isolation
Power PIPs
395