Delta THINKPAD R40 Technical Information download pdf (Page 29)

General

descriptions

This

chapter

includes

descriptions

for

any

ThinkPad

model

that

has

the

PC-Doctor

DOS

diagnostics

program.

Some

descriptions

might

not

apply

to

your

particular

computer.

Read

this

first

Before

you

go

to

the

checkout

guide,

be

sure

to

read

this

section.

Important

notes

v

Only

certified

trained

personnel

should

service

the

computer.

v

Read

the

entire

FRU

removal

and

replacement

page

before

replacing

any

FRU.

v

Use

new

nylon-coated

screws

when

you

replace

FRUs.

v

Be

extremely

careful

during

such

write

operations

as

copying,

saving,

or

formatting.

Drives

in

the

computer

that

you

are

servicing

sequence

might

have

been

altered.

If

you

select

an

incorrect

drive,

data

or

programs

might

be

overwritten.

v

Replace

FRUs

only

for

the

correct

model.

When

you

replace

a

FRU,

make

sure

the

model

of

the

machine

and

the

FRU

part

number

are

correct

by

referring

to

the

FRU

parts

list.

v

A

FRU

should

not

be

replaced

because

of

a

single,

unreproducible

failure.

Single

failures

can

occur

for

a

variety

of

reasons

that

have

nothing

to

do

with

a

hardware

defect,

such

as

cosmic

radiation,

electrostatic

discharge,

or

software

errors.

Consider

replacing

a

FRU

only

when

a

problem

recurs.

If

you

suspect

that

a

FRU

is

defective,

clear

the

error

log

and

run

the

test

again.

If

the

error

does

not

recur,

do

not

replace

the

FRU.

v

Be

careful

not

to

replace

a

nondefective

FRU.

What

to

do

first

When

you

do

return

a

FRU,

you

must

include

the

following

information

in

the

parts

exchange

form

or

parts

return

form

that

you

attach

to

it:

__

1.

Name

and

phone

number

of

servicer

__

2.

Date

of

service

__

3.

Date

on

which

the

machine

failed

©

Copyright

IBM

Corp.

2004

25

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