IBM 600X (MT 2646) manual Power-related symptoms, Other symptoms, Intermittent problems

Symptom-to-FRU error messages

Power-related symptoms

Symptom

or error

FRU

or

action, in

sequence

Power

shuts

down

during

1. Go

to

“Power

system

operation.

checkout”

on

page

9.

2.

Battery pack.

3. Remove

the

battery

pack

and

let

it cool for

2

hours.

4.

System board.

5.

Check

the

power

outlet.

The

system

does

not

power1. Press

the

power

off.

shutdown

switch.

(See

“Reset switch”

on

2.

System board.

page

3.)

Other symptoms

Symptom	or	error			FRU	or	action, in
					sequence
Errors occur			only	when	theSee	“Port		replicator
port	replicator			is used.checkout”			on	page 12.
PC Card slot pin is					1. PC		Card	slots
damaged.						assembly
Note:	If	you	cannot		find	a	symptom or an error
	and the problem remains, see “Undetermined
	problems.”

Intermittent problems

Intermittent system hang problems can be caused variety of reasons that have nothing to do with defect, such as cosmic radiation, electrostatic software errors. FRU replacement should be consi only when a problem recurs.

When analyzing an intermittent problem, do the fo

1. Run the advanced diagnostic test for the board in loop modeat least 10 times.

2.If no error is detected,not replacedoany FRUs.

3.If any error is detected, replace the F the FRU code. Rerun the test to verify th errors exist.

Undetermined problems

You are here because the diagnostic tests di which adapter or device failed, installed devic incorrect, a short circuit is suspected, or th inoperative. Follow these procedures to isolate t FRU (do not isolate nondefective FRUs).

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