IBM RS/6000 Enterprise Server M80 Service Manual page 92

Symptom
You have an 8-digit error code of the form 10n1 xxxx and
n is greater than the number of I/O drawers in the
system.
You have an 8-digit error code of the form 10n1 xxxx and
two or more drawers have the same drawer number.
The system stops with an 8-digit error code displayed
when booting.
Error Indication in Secondary I/O Drawer Operator Panel Displays
A bouncing or scrolling ball remains on a secondary I/O
drawer operator panel display or a secondary I/O drawer
operator panel display is filled with dashes.
You have an 8-digit error code in the form 10n1 xxxx.
System stops with a 4-Digit Number that does not begin with 0 or 2 Displayed
The system stops with a 4-digit checkpoint that does not
begin with 0 or 2.
System Stops With a 3-Digit Number Displayed (888 sequence, see below)
The system stops with a 3-digit error code.
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Service Guide
There is a Display Problem (Distortion, Blurring, Etc.)
Action
The failing drawer is drawer n. Look for the drawer with
the same value of n in its operator panel, either in the
form *0n or U0.n. Substitute 2 for n when looking up the
error code in "Checkpoint and Error Code Index" on page
161.
Shut down the system and remove all but one of the
drawers with duplicate drawer numbers. Refer to the
steps in "MAP 1540: Minimum Configuration" on page
110 for a procedure to connect/reconnect I/O drawers.
Attempt to reboot the system.
1. If the system fails, you have found the failing drawer.
Substitute 2 for n when looking up the error code in
"Checkpoint and Error Code Index" on page 161.
2. If the system boots, shut down and add another of
the detached drawers back into the system. Repeat
steps one and two until the failing drawer is isolated.
Note: As the system successfully boots, duplicate drawer
numbers are resolved into unique drawer numbers.
Record the error code. Go to "Checkpoint and Error Code
Index" on page 161.
Replace the following, one at a time, in the sequence
listed:
1. Secondary I/O drawer backplane
2. Secondary I/O drawer operator panel assembly
This is the failing drawer. If n is greater than the number
of I/O drawers in the system, substitute 2 for n when
looking up the error code in "Checkpoint and Error Code
Index" on page 161.
Go to Chapter 4, "Checkpoints," on page 135.
Add 101- to the left of the three digits to create an SRN.
Go to RS/6000 and Eserver pSeries Diagnostic
Information for Multiple Bus Systems.