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Service Hints & Tips

Document ID: JBAR-3QNPEX

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IBM PS/2 - 9556, 9557 with 1184 diagnostic error and/or hang

Applicable to: World-Wide

Symptom:
On some PS/2 9556 and 9557 systems, an 1184 serial port diagnostic error may be experienced. This usually occurs only when the serial port (async) diagnostics are looped several times. During normal operation, this failure has a very low probability of occurring; but would probably result in system hang with no error code or message.

Problem Isolation Aid:
Loop the serial port (async) diagnostics for at least 10 minutes.
This tip applies only to the following models:
- 9556 mod DBA, DB6, and 2BX
- 9557 mod DBA, DBG, and DB6

Fix:
If the looped serial port diagnostics fail with an 1184 error, replace the system board. If the diagnostics run error free, continue normal problem determination.

SAS KEYWORDS:
PSY2 D/T9556 D/T9557 SERIAL
PSY2BRD PSY2ERR PSY2DIAG PSY2COMM
HANGS

Search Keywords

Hint Category

Diagnostics, Retain, Lock-up/Hang

Date Created

21-06-94

Last Updated

24-11-98

Revision Date

19-11-2001

Brand

IBM PC

Product Family

PS/2

Machine Type

8556, 8557

Model

all

TypeModel

Retain Tip (if applicable)

H121982

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