IBM S84H-4552-00 manual Read This First

Read This First

Before you go to the checkout guide, be sure to read this section.

Important Notes

ŸOnly certified trained personnel should

service		the	computer	.
Ÿ Be	extremely		careful	during	write	operations
such	as	copying, saving, or formatting.						Drives
in	the computer				that	you	are	servicing	might have
been		rearranged;			or	the	drive	startup	sequence
might have been altered. If you select an
incorrect			drive,		data	or	programs can be written
over.

ŸReplace FRUs only for the correct model.

When you replace the FRU, make sure the model of the machine and FRU part number are

correct

by

referring to

the

part list.

Ÿ

FRUs

should

not

be

replaced

because

of

a

single,

unreproducible

failure.

Single

failures

can

occur

from

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.

If you suspect an unreproducible failure,

clear the

error

log

and

run

the

test

again. Do

not

replace

any

FRUs

if

log

errors

do

not

reappear.

Ÿ

Do not

replace

a

nondefective

FRU.

How

to

Use

Error

Messages:

Use the error

codes

displayed

on

the screen to diagnose failures. If

more

than

one

error

code

is

displayed,

begin

the

diagnosis

with

the

first

error

code. The

cause

of

the

first error

code

can result

in

false

error codes being displayed. If no

error

code

is

displayed,

see

if

the

error

symptom

is

listed

in

the

“Symptom-to-FRU Index”

on

page 18.

How

to

Diagnose

Multiple

FRUs:

When the

adapter

or

device

has

more

than one FRU, the error code

could be caused by either

FRU. Before

replacing

multiple

FRUs,

try

removing

or

exchanging

each FRU,

one

by

one

in the designated sequence, to see if the symptoms

change.

What

to

Do

First: The servicer must include the

following

in

the

FRU

exchange

form or FRU return form

that

is

attached

to

the

returned FRU.

1.Name and phone number of servicer

2.Date of service

3.Date when FRU failed

4.Date of purchase

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