Lenovo ThinkPad 300 Service Guide - Page 20

Message

Solution

021

x:

Keyboard

error

Make

sure

that

there

are

no

objects

placed

on

the

keyboard,

or

if

you

have

one,

the

external

keyboard.

Turn

off

the

computer,

and

turn

off

all

attached

devices.

Turn

on

the

computer

first;

then

turn

on

the

attached

devices.

If

you

still

see

the

same

error

code,

do

the

following:

If

an

external

keyboard

is

connected,

do

the

following:

v

Turn

off

the

computer

and

disconnect

the

external

keyboard;

then

turn

on

the

computer.

Make

sure

that

the

built-in

keyboard

operates

correctly.

If

it

does,

have

the

external

keyboard

serviced.

v

Make

sure

that

the

external

keyboard

is

connected

to

the

correct

connector.

Test

the

computer

by

using

PC-Doctor.

v

If

the

computer

stops

during

the

test,

have

the

computer

serviced.

0230:

Shadow

RAM

error

The

shadow

RAM

failed.

Test

your

computer’s

memory

with

PC-Doctor.

If

you

added

a

memory

module

just

before

turning

the

computer

on,

reinstall

it.

Then

test

the

memory

with

PC-Doctor.

0231:

System

RAM

error

The

system

RAM

failed.

Test

your

computer’s

memory

with

PC-Doctor.

If

you

added

a

memory

module

just

before

turning

the

computer

on,

reinstall

it.

Then

test

the

memory

with

PC-Doctor.

0232:

Extended

RAM

error

The

extended

RAM

failed.

Test

your

computer’s

memory

with

PC-Doctor.

If

you

have

increased

memory

just

before

turning

the

computer

on,

reinstall

it.

Then

test

the

memory

with

PC-Doctor.

0250:

System

battery

error

The

backup

battery,

which

is

used

to

preserve

the

configuration

information,

such

as

the

date

and

time,

while

the

computer

is

turned

off,

is

depleted.

Replace

the

battery

and

run

the

BIOS

Setup

Utility

to

verify

the

configuration.

If

you

still

have

a

problem,

have

the

computer

serviced.

0251:

System

CMOS

checksum

bad

The

system

CMOS

might

have

been

corrupted

by

an

application

program.

The

computer

uses

the

default

settings.

Run

the

BIOS

Setup

Utility

to

reconfigure

the

settings.

If

you

still

see

the

same

error

code,

have

the

computer

serviced.

0271:

Date

and

time

error

Neither

the

date

nor

the

time

is

set

in

the

computer.

Set

the

date

and

time,

using

the

BIOS

Setup

Utility.

12

ThinkPad

®

X300

Service

and

Troubleshooting

Guide

Lenovo ThinkPad 300 Service Guide - Page 20

disconnect - thinkpad x300 battery

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