Symptom

/ Error

FRU /

Action

in Sequence

Power

shuts down during

1. Go

to

“Power

operation.

Systems

Checkout”

 

 

on

page 13.

2.Battery pack

3.Remove the battery

pack and let it cool for

2 hours.

4.DC/DC card

5.System board

6.Check the power outlet.

The

system does not

power1. Press the Reset

off.

 

 

switch.

(See

“Reset Switch”

on

2.

DC/DC card

page

7.)

 

3.

System board

Other Symptoms

Symptom

/

Error

 

 

 

 

FRU / Action in Sequence

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Errors

occur

only when

theSee

“Port

Replicator

 

 

 

 

 

 

 

 

port

replicator

is

used.Checkout”

on

page

18.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC

Card

slot pin

is

 

 

PC

Card

slots

assembly .

 

 

 

 

 

 

damaged.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:

If

you

cannot

 

find

a

symptom

or

an

error

in

this

list

 

and the problem remains, see “Undetermined

 

 

 

 

 

Problems.”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Intermittent Problems

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Intermittent system hang problems can be caused by a

 

 

variety

of

reasons

that

have nothing to do with a hardware

defect,

such

as:

cosmic

radiation,

electrostatic

discharge,

or software errors. FRU replacement should be

 

 

 

 

 

considered only when a recurring

problem exists.

 

 

 

 

When

analyzing

the

 

intermittent problem,

do

the

following:

 

1.

Run

the advanced diagnostic test for the system

 

 

board

in

loop

modeat least

10

times.

 

 

 

 

 

 

 

 

2.

If

no

error

is

detected,not replacedoany FRUs.

 

 

 

 

 

3.

If

any

error

 

is detected, replace the FRU

shown

by

the

FRU

code. Rerun

the

test

to

verify

that

no

more

errors

exist.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Undetermined Problems

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

You

are

here

because

the

diagnostic

tests

did

not

identify

which adapter or device failed, installed devices are incorrect, a short circuit is suspected, or the system is inoperative. Follow these procedures to isolate the failing FRU (do not isolate nondefective FRUs).

Verify that all attached devices are supported by the computer.

32

Page 34
Image 34
IBM 380Z manual Other Symptoms, Times