IBM iSeries Series Hardware Problem Analysis And Isolation page 281

3. Is the reference code occurring on a Model 270, 800, 810, 820, or 825 system unit, or an FC 5074,
FC 5075, FC 5078, FC 0578, FC 5079, FC 5088, FC 0588, FC 5094, FC 5095, FC 9074, FC 9079, or
FC 9094 I/O Expansion?
Yes: Continue with the next step.
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No: See symbolic FRU ACMODUL in the Migrated Expansion Tower Problem Analysis, Repair and
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Parts manual on the V5R1 Supplemental Manuals web site
4. Find the model and or feature code in the table below, then go to the Locations table for the model
you are working on to find the part number and remove and replace procedure information. Note that
on some models and feature codes, "Power PIP11" on page 175 must be performed before replacing
parts.
Table 1. Part replacement for unit reference code for Models 270, 800, 810, 820, 825, 870/890 (FC
9094)
Model
Model 270
Models 800, 810
Model 820
("Power PIP11" on page 175 must be performed before replacing parts)
Model 825
Models 870/890, FC 9094
BPC-A/B P00 and M41 VPD to CB1 (FC 9094), VSCOMM cable
FC 5075
FC 5078, FC 0578, FC 5088, and FC 0588
("Power PIP11" on page 175 must be performed before replacing parts)
FC 5074, FC 5079, FC 9074, and FC 9079 (single line cord)
FC 5074, FC 5079, FC 9074, and FC 9079 (dual line cord)
("Power PIP11" on page 175 must be performed before replacing parts)
FC 5094 and FC 9094 (dual line cord)
("Power PIP11" on page 175 must be performed before replacing parts)
FC 5095
5. For Models 870/890 with reference code 00AC, if the problem still prevails, perform "MAPPWR-3: An
open room EPO switch has been detected from one side" on page 368.
This ends the procedure.
ACMODUL instructions for Models 830, 840, SB2, and SB3
Note: The C in the SRC (1xxC xxxx) indicates the problem is on the processor tower side of the Model
840 system type.
1. Is SRC 1xxx 00AC displayed?
Yes: On the system unit, the 00AC reference code can be caused by an SPCN frame-to-frame
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cable problem. This usually occurs between the Model 840/SB3 processor tower and the FC 9079
. for FRU isolation instructions.
Unit reference
code Failing item
00AC P01, P02
00AC P01, P02
00AC P01, P02, P03
00AC P01, P02
00AC Cable: PWR23 (See
the Power and
signal cables page,
and follow the
Models 870 and 890
processor towers
link.)
00AC P01, P02
00AC P01, P02
00AC P01, P02, P03
00AC
1. P01, P02
2. A01, A02
00AC
1. P00, P01, P02,
2. A01, A02
00AC P01, P02
Analyze hardware problems
P03
269