IBM thinkpad kelly schematic

	Note
Before using this information and the			product it supports, be sure to read the	general information under “Safety
information” on page v and “Notices” on			page 41.

First Edition

(January

2000)

The

following

paragraph

does

not

apply

in

the

United Kingdom or

any

other

country

where

such

provisions

are inconsistent with local law:

INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION

“AS IS”

WITHOUT

ANY

WARRANTY

OF

ANY

KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT

NOT LIMITED TO, THE LIMITED

WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states

do

not allow

disclaimers

of

express

or

implied

warranties

in

certain

transactions;

therefore, this statement may not apply to you

This publication could include technical inaccuracies or typographical

errors. Changes are periodically made to the

information herein; these changes will be incorporated in new

editions of the publication. IBM may make

improvements or changes in the products or the programs described

in

this

publication

at

any

time.

Requests for technical information about IBM products should

be

made

to

your

IBM Authorized

Dealer

or your IBM

Marketing

Representative.

Copyright

International Business Machines Corporation 2000. All rights reserved.

Note

to

U.S.

Government

Users

–

Documentation

related

to

restricted rights

– Use,

duplication,

or

disclosure

is

subject to

restrictions s

GSA

ADP

Schedule

Contract

with

IBM

Corp.

			Contents
Safety information		. . .	. . . . . . . . . v. . . . . . . .
Laser compliance statement. . . . . . . . . . . . . . . . viii. . . .
Handling the	ThinkPad	computer	. . . . . . . . . . . . . .xi. . .
ThinkPad don'ts		. . . . . . . . . . . . .xi. . . . . . . .
ThinkPad do's		. . . .	. . . . . . . . . xiii. . . . . . . .
Cleaning your computer. . . . . . . . . . . . . . . . .xiii. . . .
Carrying your computer. . . . . . . . . . . . . . . . .xiv. . . .
Extending the		life of	your computer's. . . battery. . . . . xiv.
Chapter 1.	System overview		. . . . . . . . . .1 . . . . . . . .
Features . . . . . .			. . . . . . . . . .2 . . . . . . .

Specifications. . . . . . . . . . . . . . 4. . . . . . . .

Using your online user's . guide. . . . . . . . . . . . . . .6 . . . .

Starting BIOS Setup Utility. . . . . . . . . . . . . . . . . 7. . . . .

Chapter 2. Protecting your computer	. . . . . . . .	. . . .9 . .
Using password . . . .	. . . . . . . .	. 10. . . . . . . . .

Power-on password . . . . . . . . . . . .10 . . . . . . . .

Screen saver password. . . . . . . . . . . . . . . . .10. . . .

Hard-disk passwords . . . . . . . . . . . 11. . . . . . . .

Windows password . . . . . . . . . . . .11. . . . . . . .

Supervisor password . .	. . . . . . . . .		12. . . . . . . .
Network password . . .	. . . . . .	. . .	12. . . . . . . .
Passwords and standby	mode. . . . . . . . .	. . . . . .12. . .

Using the locks and the security. . . .screw. . . . . . . .13. .

Attaching the mechanical . lock. . . . . . . . . . . . . .13. . .

Using the security . screw. . . . . . . . . . . . . . . .13. . . .

Using the Asset RF ID .feature. . . . . . . . . . . . . .								14. . . .
Chapter	3.	Solving		computer	problems	. . . . . . . . . .		15. .
Troubleshooting . . . . . . . . . . . . .							16. . . . . . . . .
Error		codes		or messages. . . . . . . . . . . . . . . .				16. . . .
No	error		codes		or messages. . . . . . . . . . . . . . .19. . .
A power switch problem. . . . . . . . . . . . . . . . .20. . . .
Input problems . . . . . . . . . . . . .							20. . . . . . . .
Standby			or	hibernation problems. . . . . . . . . . . . .				22. . .
LCD problems				. . . . . . . . . . . . .			25. . . . . . . .
Battery problems . . . . . . . . . . . .							27. . . . . . . .
Hard-disk-drive problems. . . . . . . . . .							27. . . . . . . .
Software problems . . . . . . . . . . .							.28 . . . . . . . .

Copyright IBM Corp. 2000

iii

Other problems . . . . . . . . . . . . .29 . . . . . . . .

Testing your computer. . . . . . . . . . . . . . . . . . .30. . . . .

Backing up your system. . . . . . . . . . . . . . . . . . 30. . . . .

Backing up your system configuration. . . . . . . . . . . 30. .

Backing up your data. . . . . . . . . . . . . . . . . . 31. . . . .

Recovering lost or damaged software. . . . . . . . . . . 32. .

Getting service . . . . .		. . . . . . . .	35. . . . . . . . .
ThinkPad Web site. . . . . . . . . . . . . . . . . . .36. . . . .
Recording sheets . . . .		. . . . . . . .	37. . . . . . . . .
Appendix A. Product warranty and notices		. . . . . . . . .39.
Notices . . . . . . . . . . . . . . . .41. . . . . . . . .
Year 2000 readiness and instructions. . . . . . . . . . . 41. .
Trademarks	. . . . . . . . . . . . .		42. . . . . . . . .
Electronic emission notices. . . . . . . . . . . . . . . 43. . . .
Telecommunication notices .		. . . . . . . .	45. . . . . . . . .

Industry Canada requirements. . . . . . . . . . . . . . .47. . .

Product notice requirements. . . . . . . . . . . . . . . 49. . . .

Notice for European Union countries. . . . . . . . . . . .49. .

iv IBM ThinkPad A20 User's Reference

Safety information

Note: In the U.K., by law:

Ÿ The

telephone

line

cable DANGER

must

be

connected

after

from

power,

telephone,

and

the

power cord.

Electric current

communication

cables

is

hazardous.

To

avoid

shock

Ÿ The power cord must behazard, connect and disconnect cables as shown

disconnected after thebelow when installing, moving, or

opening the covers

telephone

line

cable. of

this

product

or

attached

devices.

The 3-pin power

cord

must

be

used

with a

properly

grounded

outlet.

To Connect

To Disconnect

Turn everything OFF.

Turn everything OFF.

First, attach all cables to devices.

First, remove the power cord from the outlet.

Remove signal cables from receptacles.

Attach the signal cables to receptacles.

Remove all cables from devices.

Attach the power cord to an outlet.

Turn the device ON.

Copyright IBM Corp. 2000

v

DANGER

Reduce

the

risk

of

fire

and

electric

shock

by

always

following

basic

safety

precautions,

including

the

following:

Ÿ

Do

not

use

your

computer

in

or

near

water.

Ÿ

During

electrical

storms:

–

Do

not

use your computer with the telephone

cable

connection.

–

Do

not

connect

the

cable

to

or

disconnect

it from

the

telephone outlet

on

the

wall.

DANGER

If

the

rechargeable

battery

pack

is incorrectly

replaced,

there

is

danger

of

an

explosion.

The

battery

pack

contains

a

small

amount of harmful substances. To

avoid

possible

injury:

Ÿ

Replace

only

with

a

battery

of

the

type

recommended

by

IBM,

or

an

equivalent.

Ÿ

Keep

the

battery

pack

away

from

fire.

Ÿ

Do

not

expose it to water or

rain.

Ÿ

Do

not

attempt

to

disassemble

it.

Ÿ

Do

not

short-circuit

it.

Ÿ

Keep

it

away

from

children.

Do

not

put

the

battery

pack

in

trash

that

is

disposed of

in

landfills.

When

disposing of the battery, comply with

local

ordinances

or

regulations

and

your

company's

safety

standards. In

the

United

States,

call

IBM

at

1-800-IBM-4333

for

information

on

disposal.

vi IBM ThinkPad A20 User's Reference

DANGER

There

is

a

danger

of

an

explosion

if

the

backup

battery

is

incorrectly

replaced.

The

lithium

battery

(IBM

P/N

02K6541

UL-recognized

component

[file

no.

MH12210])

contains

lithium

and

can

explode

if

it

is

not

properly

handled

or

disposed

of.

Replace

only

with

a

battery

of

the

same

type.

To

avoid

possible

injury

or

death,

do

not:

(1)

throw

or

immerse

the

batter

into

water,

(2)

allow

it

to

heat

to more

than 100 °C (212 °F), or

(3)

attempt

to

repair

or

disassemble

it. Dispose

of

it

as

required

by

local

ordinances or regulations and your company's

safety

standards.

CAUTION:

The

fluorescent

lamp

in

the

liquid

crystal

display

(LCD)

contains

mercury.

Do

not

put

it

in

trash

that

is

disposed of

in

landfills.

Dispose

of

it

as

required

by

local

ordinances

or

regulations.

The

LCD

is

made

of

glass,

and

rough

handling

or

dropping

the

computer

can

cause

the

LCD

to

break. If

the

LCD

breaks

and

the internal fluid gets into

your

eyes

or on

your

hands,

immediately wash

the

affected

areas

with

water for at least 15

minutes;

if

any

symptoms

are

present

after

washing,

get

medical

care.

CAUTION:

To reduce the risk of

fire, use only No. 26

AWG

or

larger

(thicker)

telephone

cable.

Safety informationvii

Laser compliance statement

The

CD-ROM

or

DVD

drive,

which can be installed in the IBM

ThinkPad A20, is a laser

product. The drive's classification label

(shown

below)

is

on

the

surface of

the drive.

CLASS

1

LASER

PRODUCT

LASER

KLASSE

1

LUOKAN

1

LASERLAITE

APPAREIL

A

LASER

DE

CLASSE

1

KLASS

1

LASER

APPARAT

The

drive

is

certified

in the U.S. to conform

to

the

requirements o

the Department of Health and Human Services 21 Code of Federal

Regulations

(DHHS

21

CFR)

Subchapter

J for Class

I

laser

products.

In other countries, the drive is certified to conform to the requirements of EN60825.

DANGER

Do

not

open the CD-ROM or DVD drive

unit; no

user

adjustments or

serviceable

parts are

inside.

Use

of

controls,

adjustments,

or

the

performance

of

procedures

other

than

those

specified

might

result

in

hazardous

radiation

exposure.

Class

1

laser

products

are

not

considered

hazardous. The

design of

the laser system and the CD-ROM or

DVD-ROM drive ensures that

there is no exposure to laser

radiation

above a Class 1

level during

normal

operation,

user

maintenance,

or

servicing.

viii IBM ThinkPad A20 User's Reference

Some drives contain an embedded Class 3A laser diode. Note this warning:

DANGER

Emits	visible	and	invisible	laser	radiation	when	open.
Avoid	direct	eye	exposure.	Do not	stare	into	the beam
or view it		directly with		optical	instruments.

Safety informationix

x IBM ThinkPad A20 User's Reference

Handling

the

ThinkPad

computer

By

using

common

sense

and

by

following these

handling

tips,

you

will get the most use

and enjoyment

out

of

your

computer

for

a long

time

to

come.

This section provides tips for handling notebook computers in

general. Some descriptions might not suit

your

situation. Check

your shipping checklist to confirm the items you get with your

computer.

Notebook computers are precision machines that require careful

handling. Though

your computer is designed and tested to be a

durable notebook computer that functions reliably in normal work

environments,

you

need

to

use

some

common

sense

in

handling

it.

ThinkPad don'ts

Ÿ Do not subject your computer to

physical

punishment, such as

dropping

or

bumping.

Ÿ

Do

not

place

heavy

objects

on your

computer.

Ÿ

Do

not

spill

or

allow liquids

into

your

computer.

Ÿ

Do

not

use

your

computer

in

or

near

water

(to

avoid

the

danger

of

electrical

shock).

Ÿ

Do

not

pack

your

computer

in

a

tightly

packed

suitcase

or

bag.

Your

LCD

might

be

damaged.

A

scratchlike

marking

on

your

LCD

might

be

a

stain

transferred

from

the

keyboard

(including

from the

TrackPoint

stick)

when

the cover

was pressed

from the outside. Wipe such a stain gently with

a dry soft cloth. If the

remains,

moisten the

cloth

with

LCD cleaner

and

wipe the stain

again. Be

sure

to

dry

the

LCD

before

closing

it.

Ÿ Do not disassemble your computer. Only an authorized IBM

ThinkPad repair technician should disassemble and repair your

computer.

Ÿ Do not scratch, twist, hit, or push the

surface

of

your computer

display.

Ÿ

Do

not

place

any

objects

between

the

display

and the

keyboard

or

under

the

keyboard.

Ÿ Do not pick up

or hold your computer by

the

display. When

picking

up

your

open

computer,

hold

it

by

the

bottom

(keyboard)

half.

Copyright IBM Corp. 2000

xi

Ÿ

Do

not

modify

or

tape

the

latches

to

keep

the

display

open

or

closed.

Ÿ

Do

not

turn

your

computer over while the ac

adapter

is

plugged

in.

This

could

break

the

adapter

plug.

Ÿ

Do

not

move

the

computer when the hard disk drive is accessing

data

(when

the

indicator

is

blinking).

Ÿ

Do

not

use

or

store

your

computer

where

the

temperature

is

below

5°

C

or

above

35°

C

(41°

F

and

95°

F).

Ÿ

Do

not place your computer closer than 13 cm (5 in.) to any

electrical

appliance that

generates

a

strong

magnetic

field,

such

as

a motor, a magnet, a TV, a refrigerator, or large audio

speakers.

Ÿ

Do

not

put an operating cellular phone

on

the

computer. The

phone

might

cause

a

computer

system

malfunction.

Ÿ

Do

not

hard-mount

your computer in a vehicle or anywhere that it

is

subject

to

strong

vibration.

Ÿ Do not crush, drop, or physically punish the external or

removable hard disk, diskette, or CD-ROM drive

when

it

is

outside

your

computer.

Ÿ

Do

not

press

on

the

middle

part

of

the

diskette

drive or

the

CD-ROM

drive.

Ÿ

Do

not

insert a diskette at an angle. Not inserting the diskette

straight

into

the

drive can damage the drive.

Ÿ

Do

not

place more than one label on

a diskette, and do not allow

the

label

to

be

loose. Multiple

or

loose

labels

can

detach

or

tear

and

then

lodge

in

the

drive.

Ÿ

Do

not

touch

the

lens

on

the

CD-ROM

tray.

Ÿ

Do

not

close

the

CD-ROM tray until you hear

the

CD-ROM click

into

the

center

pivot of the CD-ROM drive.

Ÿ

Do

not

touch

the

surface

of

a

compact

disc;

handle

the

compact

disc

only by

its

edges.

Ÿ

Do

not

connect the modem to a PBX

(private

branch

exchange)

or

other

digital

telephone

extensionYour computerlinecan.

use

only

a public-switched telephone network

(PSTN)

. Use

of

a

phone line

other

than

PSTN

can

damage

your

modem. If

you

are not sure which kind

of

phone

line

you

are

using,

contact

your telephone company. Many hotels or office buildings use

digital telephone extension lines, so check before connecting the

telephone

cable

in

such places.

Ÿ

Do

not

leave

the

base of your computer in

contact with

your

lap

or

any part

of

your

body

for

an

extended

period

when

the

xii IBM ThinkPad A20 User's Reference

computer is functioning or when the				battery is charging. Your
computer	dissipates	some heat	during		normal operation. This
heat is	a function	of the level of system activity and battery
charge level. Extended contact with				your body, even through
clothing,	could cause	discomfort	or,		eventually, a skin burn.

ThinkPad do's

Treat your computer

like

precision

electronic machinery.

Ÿ

When

installing

your

hard disk,

diskette,

or

CD-ROM drive, follow

the instructions in this online

book

and

apply

pressure

only

where

needed

on

the

device.

Ÿ When

installing the CD-ROM or diskette drive into the

UltraslimBay, make

sure

the ac

adapter

is

disconnected

from

your

computer.

Ÿ

If

you

exchange

drives in your computer, reinstall the plastic

bezel

faces

(if

supplied).

Ÿ

Store

your external and removable hard disk, diskette, and

CD-ROM

drives in the appropriate container

or

packaging

when

they

are

not

being

used.

Ÿ

Choose

a

quality

carrying case that will protect your computer.

Ÿ

Store

packing

materials

safely out

of

reach

of children

to prevent

the risk	of suffocation from	plastic	bags.
Ÿ Register your ThinkPad products with			IBM	(refer to the Web
pages:http://www.pc.ibm.com/register		). This	can	help
authorities return your computer to you if it is lost or stolen.
Registering your computer also enables IBM to notify you about
possible	upgrades.

Ÿ Check the IBM Web pageshttp://www(.ibm.com/thinkpad	)
periodically to get current information	about your computer.

Cleaning your computer

Occasionally			clean your			computer	as	follows:
Ÿ Use		a	soft cloth moistened				with	nonalkaline detergent to wipe the
	exterior		of	the	computer.
Ÿ	Don't	spray		cleaner		directly	on the display or keyboard.
Ÿ	Gently	wipe		the	LCD	with a	dry,	soft cloth.

Handling the ThinkPad computerxiii

Carrying your computer

When carrying your computer, follow these instructions to prevent

possible

damage

to

your

computer and

data:

1. Remove

any

media from the CD-ROM

drive

or

diskette

drive.

2. Turn

off

all

attached

devices.

3. Power

off

the

computer,

or

enter

suspend

or

hibernation

mode;

then

close the LCD. Make sure

the

suspend

indicator

is on

when

the computer is in suspend

mode,

or

the

power

indicator is

off

when it

is

powered

off

or

in hibernation

mode.

4. Unplug all external cables and cords connected to your

computer.

5. Make

sure

all computer

doors

and

covers

are closed.

6. Use a quality carrying case that provides adequate cushion and

protection.

Do

not

move

the

computer when

the

hard

disk drive is

accessing data—that

is,

when

the indicator is blinking. Make

sure

the

indicator is

off

before you

carry

the

computer.

Extending the life

of

your

computer's

battery

The

amount

of

battery

power

consumed

by

your

computer

depends

on such conditions as the frequency of use, the operating

temperature,

and

the

period

in storage (if

unused). The

following

tips

can

help

you

to

extend the

life of

your

battery:

Ÿ Do not

recharge the battery pack

until

all of its power is

used.

Recharging

a battery pack that is

not

completely

discharged

can

shorten

battery life.

Ÿ

Once

you

start charging the battery pack,

do not

use it until it

fully

charged.

ŸWhenever possible, use the ThinkPad battery power-saving modes:

–Screen blank

	–Standby
	–Hibernation
	For	more	information, refer	to the	online user's	guide:
Ÿ	Decrease		the LCD brightness.
Ÿ	Use	power management. Each		operating	system comes	with its
	own	power	management.

xiv IBM ThinkPad A20 User's Reference

Ÿ

If

the

internal

serial

devices—the

modem,

the

serial port,

and t

infrared

port—are

not

in

use,

stop the supply of power to

them.

Ÿ

If

you

will

not

be using

the

computer for a

long period,

remove

the

battery

pack

and

keep it

in

a cool

place.

Handling the ThinkPad computerxv

xvi IBM ThinkPad A20 User's Reference

Chapter 1. System overview

Features . . . . . . . . . . . . . . . .2 . . . . . . .

Specifications. . . . . . . . . . . . . . 4. . . . . . . .

Using your online user's . guide. . . . . . . . . . . . . . .6 . . . .

Starting BIOS Setup Utility. . . . . . . . . . . . . . . . . 7. . . . .

Copyright IBM Corp. 2000

1

Features and specifications

Features

Processor
Ÿ	Intel		Mobile Pentium		III		processor
or
Ÿ	Intel Celeron processor
Memory
Ÿ	Built-in: 64 MB or 128 MB
Ÿ	Maximum:		320	MB or	384	MB
Storage		device
Ÿ	2.5-inch hard disk drive
Display
The	color display uses TFT technology:
Ÿ	Resolution:
	–	LCD:	Up	to 1400-by-1050,			depending on the model
	–	External		monitor:	Up	to	1600-by-1200
		– Brightness control

Keyboard

Ÿ 84-key, 85-key, or 89-key

ŸTrackPoint

ŸFn key function

2 IBM ThinkPad A20 User's Reference

Features

and

specifications

Diskette

drive

To

get

the

best

performance from your

diskette drives,

use

high-quality diskettes (such as

IBM

diskettes)

that

meet

or exceed

the following

standards:

Ÿ

1-MB,

3.5-inch, unformatted diskette:

–

ANSI

(American

National

Standards

Institute)

X3.137

–

ISO

(International Standards

Organization)

8860

–

ECMA

(European

Computer

Manufacturers

Association)

100

Ÿ 2-MB, 3.5-inch, unformatted diskette:

–ANSI X3.171

–ISO 9529

–ECMA 125

External interface

Ÿ Serial connector (EIA-RS232D)

Ÿ Parallel connector (IEEE 1284A)

Ÿ External input-device connector

ŸExternal-monitor connector

ŸExpansion connector

Ÿ PC	Card slots (two Type I or Type II PC Cards, or one Type I
PC	Card)

ŸHeadphone jack

ŸLine-in jack

ŸMicrophone jack

ŸInfrared port

Ÿ	Universal serial bus (USB) connector
Ÿ	Telephone connector
Ÿ	Ethernet	connector	(available		if	the Ethernet	Mini-PCI	Card or	the
	Combo Mini-PCI Card is installed)
Ÿ	UltraPort	connector	to	support an		optional IBM	digital	camera	(on
	some models)
Ÿ	Video-in	connector	(on	some	models)

Ÿ Video-out connector (on some models)

Chapter 1. System overview3

Specifications

Specifications

Size

Ÿ

15-inch

LCD

model:

–

Width:

329

mm

(13.0

in.)

–

Depth:

267.5

mm

(10.5

in.)

–

Height:

38.1

mm

(1.5

in.)

to

44.7

mm

(1.8

in.)

Ÿ

14.1-inch

LCD

model:

–

Width:

317

mm

(12.5

in.)

–

Depth:

267.5

mm

(10.5

in.)

–

Height:

36.7

mm

(1.4

in.)

to

43.3

mm

(1.7

in.)

Ÿ

12.1-inch

LCD

model:

–

Width:

317

mm

(12.5

in.)

–

Depth:

267.5

mm

(10.5

in.)

– Height: 36.7 mm (1.4 in.)

to

43.3

mm

(1.7

in.)

Environment

Ÿ

Maximum

altitude

without

pressurization:

3048

m (10,000

ft)

Ÿ

Temperature

–

At

altitudes

up

to

2438

m

(8000

ft)

-

Operating

with

no

diskette: 5° to 35°C (41° to 95°F)

-

Operating

with

a

diskette: 10° to

35°C

(50°

to

95°F)

-

Not

operating: 5°

to 43°C (41° to 109°F)

–

At

altitudes

above

2438

m

(8000

ft)

-

Maximum

operating

temperature,

31.3°C (88°

F)

Note:

When

you

charge

the battery pack, its temperature must

be at

least

10°C

(50°F).

Ÿ

Relative humidity:

–

Operating

with

no

diskette

in

the

drive:

8%

to

95%

–

Operating

with

a

diskette

in

the

drive:

8%

to

80%

Heat

output

Ÿ

56

W

(191

Btu/hr)

maximum

4 IBM ThinkPad A20 User's Reference