IBM i 830 Repair Manual page 593

For 1xxx-2600 in a FC 5078/0578 secondary I/O frame, use this table:
Unit Reference Code
2600
5. Is the SRC 1xxx CD00?
No Yes
↓
The system unit is not detecting any power supplies installed. If a
power supply is installed replace the following one at a time:
Expansion unit frame FC 5077, 5073, and 5083:
v part 21H7697
All others with AC Module:
v part 87G6300
This ends the procedure.
6. Is the SRC 1xxx 7xxx?
No Yes
↓
The failing power supply is located in a secondary tower. The address
of the failing tower and unit is shown in the third and fourth
character of the 4 leftmost characters of the SRC. Find the unit
reference code in the following list to determine the failing power
supply and the part number. Then see "Locations and Addresses" on
page 705 to determine the location of the failing item.
Unit Reference Code
7x01
7x02
7x03
This ends the procedure.
7. Is the SRC 1xxx 2131, 2240, or 2311?
No Yes
↓
The failing item is power supply 1 on a base expansion unit:
v FC 5033, 5034 – part 21H9364
v FC 5035 – part 44H7779
Note: FC 5035 may contain up to 4 power supplies. The reference
code that sent you here refers to the power supply on the base
expansion unit (see the Locations and Addresses section in
Migrated Expansion Tower Problem Analysis, Repair and Parts.)
Chapter 3. Problem Isolation Procedures (PIPs), Failing Items, and Symbolic FRU Isolation
Power Supply
P01, P02
Power Supply
AC Module (except
5077, 5073, 5083)
AC Module 5077, 5073,
5083
Feature 2 (all except
5073, 5077, 5083)
5073, 5077, 5083
Feature 1 (all except
5073, 5077, 5083)
5073, 5077, 5083
Symbolic FRUs
Part Number
21P4970
Part Number
87G6300
21H7697
87G6290
87G6110
87G6290
87G6110
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