IBM THINKPAD T20, THINKPAD T21, THINKPAD T22, THINKPAD T23 TROUBLE

IBM

ThinkPad Service and Troubleshooting Guide

T22

Note

Before using this information and the product it supports, be sure to read the general information under “Appendix A. Important safety instructions” on page 41 and “Appendix B. Product warranties and notices” on page 47 .

DANGER

v To avoid electric shock hazard, connect and disconnect cables appropriately when installing, moving or opening

the covers of this product or attached devices. Use the power cord with a properly grounded outlet.

v 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 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.

v To reduce the risk of electric shock, do not use your computer in or near water. v To avoid electric shock, do not use your computer with the telephone cable connection during an electrical

storm. Do not connect the cable to or disconnect it from the telephone outlet on the wall during an electrical storm.

v Store packing materials safely out of the reach of children to prevent the risk of suffocation from plastic bags. v The battery pack contains a small amount of harmful substances. There is danger of an explosion if the battery

pack is incorrectly replaced, exposed to fire or water, short-circuited or disassembled. Keep the battery pack away from children and do not put it in trash that is disposed of in landfills.

v To reduce the risk of fire, use only No. 26 AWG or thicker telephone cable. v The fluorescent lamp in the LCD contains mercury. Do not put it in trash that is disposed of in landfills. Rough

handling or dropping the computer can cause the LCD to break and the internal fluid to get into your eyes or on your hands. Immediately wash the affected areas with water. If symptoms persist, seek medical care.

v Do not open the CD-ROM or DVD drive unit, as this might result in hazardous radiation exposure. v Avoid direct eye exposure with the laser beam contained in some drives.

First Edition (January 2001) The following paragraph does not apply to the United Kingdom or any country where such provisions are

inconsistent with local law:

INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION ″AS IS″ WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to you.

This information 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 and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice.

IBM may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.

US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.

Finding information with Access ThinkPad

Join an interactive community of ThinkPad users to access mobile resources, read tips and true stories, and share your own advice.

Customize your ThinkPad with accessories, software and services.

A one-click guide to service on the Web for your ThinkPad.

Your gateway into a comprehensive help system, offering information about all of your ThinkPad computer hardware and software features.

A quick way to search the help system.

Whenever you have a question about your computer, or wish to view IBM Web sites, simply press the ThinkPad button to open Access ThinkPad.

Click one of the Internet buttons to join an interactive ThinkPad Web community, or to directly access information about accessories and software updates, small business offerings, and help and support.

Access ThinkPad includes a comprehensive, on-board help and information center for your computer. It travels with you, eliminating the need to carry reference manuals.

Find information about your ThinkPad computer and its features by using the Quick Search or clicking one of the topics shown. This opens another window, where you can view hundreds of help topics by browsing the table of contents, using the index, or performing a search.

View help topics to learn how to:

v Use your computer hardware features v Connect to the internet or a local network v Set up a projector for your presentation v Use passwords and other security features v Install, remove and recover software v Upgrade your system v Extend the life of your battery v Troubleshoot problems v Contact IBM for service and support v Perform many other tasks

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T22 Service and Troubleshooting Guide

Some of the topics in your help system contain brief video clips that show you how to perform certain tasks, such as replacing your battery, inserting a PC card, or upgrading your memory. Use the controls shown to play, pause, and rewind the video clip.

Finding information with Access ThinkPad v

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T22 Service and Troubleshooting Guide

Contents

Finding information with Access ThinkPad iii

Chapter 1. Overview of your new ThinkPad

computer .............1

Your ThinkPad at a glance .......2

Features..............3

Specifications ............5

Caring for your ThinkPad computer ....6

Chapter 2. Solving computer problems . . 9

Diagnosing problems .........10

Troubleshooting...........11

Error messages ..........11

Errors without messages .......14

Password problems ........15

A power switch problem.......16

Keyboard problems ........16

TrackPoint problems ........17

Standby or hibernation problems ....18

Computer screen problems ......22

Battery problems .........23

Hard disk drive problems ......24

Chapter 1. Overview of your new ThinkPad computer 3

Features

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:

v 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

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

– ANSI X3.171 – ISO 9529 – ECMA 125

External interface

v Serial connector (EIA-RS232D) v Parallel connector (IEEE 1284A) v External-input-device connector v External-monitor connector v PC Card slots (Type I, Type II, or Type III PC Card) v Headphone jack v Line-in jack v Microphone jack v Video-out connector v Universal Serial Bus (USB) connector

™

v Ultraport

connector

v Infrared port v RJ11 telephone connector (available if the modem Mini-PCI Card or the

Combo Mini-PCI Card is installed)

v RJ45 Ethernet connector (available if the Ethernet Mini-PCI Card or the

Combo Mini-PCI Card is installed)

™

v Ultrabay

2000

v Expansion connector

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T22 Service and Troubleshooting Guide

Specifications

Size

v Width: 304.8 mm (12.0 in.) v Depth: 248.9 mm (9.8 in.) v Height: 33.0 mm (1.3 in.)

Environment

v Maximum altitude without pressurization: 3048 m (10,000 ft) v 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 110°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).

v Relative humidity:

– Operating with no diskette in the drive: 8% to 95% – Operating with a diskette in the drive: 8% to 80%

Heat output

v 56 (191 Btu/hr) maximum

Electrical (ac adapter)

v Sin-wave input at 50 to 60 Hz v Input rating of the ac adapter: 100-240 V ac, 50 to 60 Hz

Battery pack

v Lithium-ion (Li-Ion) battery pack

– Nominal voltage: 10.8 V dc – Capacity: 3.6 AH

Chapter 1. Overview of your new ThinkPad computer 5

Caring for your ThinkPad computer

Though your computer is designed to function reliably in normal work environments, you need to use common sense in handling it. By following these important tips, you will get the most use and enjoyment out of your computer.

Important tips:

Be careful about where and how you work

v 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 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.

v Place liquids away from your computer to avoid spills, and keep your

computer away from water (to avoid the danger of electrical shock).

v Store packing materials safely out of the reach of children to prevent the

risk of suffocation from plastic bags.

v Keep your computer away from magnets, activated cellular phones,

electrical appliances, or speakers (within 13cm/5 in).

v Avoid subjecting your computer to extreme temperatures (below 5°C/41°F

or above 35°C/95°F).

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Be gentle with your computer

v Avoid placing any objects (including paper) between the display and the

keyboard or under the keyboard.

v Do not drop, bump, scratch, twist, hit, vibrate, push or place heavy objects

on your computer, display, or external devices.

v Your computer display is designed to be opened and used at an angle

slightly greater than 90 degrees. Do not open the display beyond 135 degrees, as this might damage the computer hinge.

Carry your computer properly

v Before moving your computer, be sure to remove any media, turn off

attached devices, and disconnect cords and cables.

v Be sure your computer is in standby or hibernation mode, or turned off,

before moving it. This will prevent damage to the hard disk drive and data loss.

v When picking up your open computer, hold it by the bottom. Do not pick

up or hold your computer by the display.

T22 Service and Troubleshooting Guide

Caring for your ThinkPad computer

v Use a quality carrying case that provides adequate cushion and protection.

Do not pack your computer in a tightly packed suitcase or bag.

Handle storage media and drives properly

v If your computer comes with a diskette drive, avoid inserting diskettes at

an angle and attaching multiple or loose diskette labels, as these can lodge in the drive.

v If your computer comes with a CD-ROM or DVD-ROM drive, do not touch

the surface of a CD or the lens on the CD-ROM or DVD-ROM tray.

v Wait until you hear the CD- or DVD-ROM click into the center pivot of the

CD- or DVD-ROM drive before closing the CD- or DVD-ROM tray

v When installing your hard disk, diskette, CD-ROM, or DVD-ROM drive,

follow the instructions shipped with your hardware, and apply pressure only where needed on the device. See Access ThinkPad, your on-board help system, for information on replacing your hard disk drive (open Access ThinkPad by pressing the ThinkPad button).

Take care in setting passwords

v Remember your passwords. If you forget a supervisor or hard disk

password, IBM will not reset it, and you may have to replace your system board or hard disk drive.

v If you are an administrator, remember that setting a supervisor password

can prevent unauthorized initialization.

Other important tips

v Your computer modem may use only an analog telephone network, or

public-switched telephone network (PSTN). Do not connect the modem to a PBX (private branch exchange) or any other digital telephone extension line because this could damage your modem. Analog phone lines are often used in homes, while digital phone lines are often used in hotels or office buildings. If you are not sure which kind of phone line you are using, contact your telephone company.

v Your computer might have both an Ethernet connector and a modem

connector. If so, be sure to connect your communication cable to the correct one, so your connector is not damaged. See Access ThinkPad, your on-board help system, for information on the location of these connectors (press the ThinkPad button to open Access ThinkPad).

v Register your ThinkPad products with IBM (refer to the Web page:

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 technical information and upgrades.

v Only an authorized IBM ThinkPad repair technician should disassemble

and repair your computer.

Chapter 1. Overview of your new ThinkPad computer 7

Caring for your ThinkPad computer

v Do not modify or tape the latches to keep the display open or closed. v Take care not to turn your computer over while the ac adapter is plugged

in. This could break the adapter plug.

v Turn off your computer if you are replacing a device in a device bay, or else

verify that the device is warm- or hot-swappable.

v If you exchange drives in your computer, reinstall the plastic bezel faces (if

supplied).

v Store your external and removable hard disk, diskette, CD-ROM, and

DVD-ROM drives in the appropriate containers or packaging when they are not being used.

Cleaning your computer

Occasionally clean your computer as follows: v Use a soft cloth moistened with nonalkaline detergent to wipe the exterior

of the computer.

v Avoid spraying cleaner directly on the display or the keyboard. v Gently wipe the display with a dry, soft cloth.

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T22 Service and Troubleshooting Guide

Chapter 2. Solving computer problems

Diagnosing problems .........10

Troubleshooting...........11

Error messages ..........11

Errors without messages .......14

Password problems ........15

A power switch problem.......16

Keyboard problems ........16

TrackPoint problems ........17

Standby or hibernation problems ....18

Computer screen problems ......22

Battery problems .........23

Hard disk drive problems ......24

Chapter 2. Solving computer problems 11

Solving computer problems

Message Solution

021x: Keyboard error Make sure that no object is placed on the keyboard or on the external

keyboard, if you have one. 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 was, have the external keyboard serviced.

v Make sure that the external keyboard is connected to the correct

connector.

Test the computer, using PC-Doctor. v If the computer stops during the test, have the computer serviced.

0220: Monitor type error The monitor type does not match the type specified in CMOS. Run the IBM

BIOS Setup Utility to make sure that your monitor type matches the type specified in the utility.

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

0250: System battery error

0251: System CMOS checksum bad

0260: System timer error Have the computer serviced. 0270: Real time clock

error 0271: Date and time error Neither the date nor the time is set in the computer. Set the date and time,

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.

The system battery is dead. Replace the battery and run IBM BIOS Setup Utility to verify the configuration. If you still have a problem, have the computer serviced.

The system CMOS might have been corrupted by an application program. The computer uses the default settings. Run IBM BIOS Setup Utility to reconfigure the settings. If you still see the same error code, have the computer serviced.

Have the computer serviced.

using the IBM BIOS Setup Utility.

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T22 Service and Troubleshooting Guide

Solving computer problems

Message Solution

0280: Previous boot incomplete

02D0: System cache error The cache is disabled. Have the computer serviced. 02F4: EISA CMOS not

writable 02F5: DMA test failed Have the computer serviced. 02F6: Software NMI

failed 02F7: Fail-safe timer NMI

failed The power-on password

prompt

The hard disk password prompt

Your computer was previously unable to complete the boot process.

Turn the computer off; then turn it on to start the IBM BIOS Setup Utility. Verify the configuration and then restart the computer either by choosing the Exit Saving Changes option under the Restart item or by pressing F10. If you still see the same error code, have the computer serviced.

Have the computer serviced.

A power-on password or a supervisor password is set. Type the password and press Enter to use the computer. If the power-on password is not accepted, a supervisor password might have been set. Type the supervisor password and press Enter. If you still see the same error message, have the computer serviced.

A hard disk password is set. Type the password and press Enter to use the computer.

If you still see the same error message, have the computer serviced.

The DOS full-screen looks smaller.

Hibernation error The system configuration changed between the time your computer entered

If you use a DOS application that supports only 640x480 resolution (VGA mode), the screen image might look slightly distorted or might appear smaller than the display size. This is to maintain compatibility with other DOS applications. To expand the screen image to the same size as the actual screen, start the ThinkPad Configuration Program and click LCD; then select the Screen expansion function. (The image might still look slightly distorted.) Note: If your computer has screen expansion function, you can use the Fn+F8 keys to expand the screen image.

hibernation mode and the time it left this mode, and your computer cannot resume normal operation.

v Restore the system configuration to what it was before your computer

entered hibernation mode.

v If the memory size has been changed, re-create the hibernation file.

Chapter 2. Solving computer problems 13

Solving computer problems

Message Solution

Operating system not found.

Fan error The cooling fan is failing. Have the computer serviced. EMM386 Not Installed—

Unable to Set Page Frame Base Address.

CardBus Configuration Error—Device Disabled

Verify the following:

v The hard disk drive is correctly installed. v A startable diskette is in the diskette drive

If you still see the same error message, check the boot sequence, using IBM BIOS Setup Utility.

Edit C:\CONFIG.SYS and change a line from

device=C:\WINDOWS\EMM386.EXE RAM

device=C:\WINDOWS\EMM386.EXE NOEMS

and save this file. Press F1 to go to the IBM BIOS Setup Utility. Press F9 and then Enter to

load the default setting.

Press F10 and then Enter to restart the system.

Errors without messages

Problem: When I turn on the machine, nothing appears on the screen and the machine does not beep while starting up.

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Note: If you are not sure whether you heard any beeps, turn off the

computer; then turn it on again, and listen again.

Solution: If a power-on password is set, press any key to display the power-on password prompt, and then type the correct password and press Enter.

If the power-on password prompt does not appear, the brightness control lever might be set to minimum brightness. Adjust the brightness level by pressing the Fn+Home.

If the screen still remains blank, make sure that:

v The battery is installed correctly. v The ac adapter is connected to the computer and the power cord is plugged

into a working electrical outlet.

v The computer power is on. (Turn on the power switch again for

confirmation.)

T22 Service and Troubleshooting Guide

Solving computer problems

If these items are properly set, and the screen remains blank, have the computer serviced.

Problem: When I turn on the machine, nothing appears on the screen, but I hear two or more beeps or a continuous beep while starting up.

Solution: If you are using Ethernet:

v Make sure that the Ethernet cable is connected firmly. v Contact your network administrator.

If you are not using Ethernet: v Make sure that Alert on LAN2 is disabled in the IBM BIOS Setup Utility.

If the screen is still blank, and beeps are not stopped, have the computer serviced.

Problem: When I turn on the machine, only a white cursor appears on a blank screen

Solution: First, reboot your system by pressing Ctrl+Alt+Del. If that does not work, hold down the power switch for more than 4 seconds. If this does not resolve the problem, you may need to reinstall your operating system.

Problem: My screen goes blank while the computer is on.

Solution: Your screen saver or power management may be enabled. Move the

TrackPoint or press a key to exit the screen saver, or press the power switch to resume from standby or hibernation.

Password problems

Problem: I forgot my password.

Solution: If you forgot your power-on password, you have to take your

computer to an IBM reseller or marketing representative to have the password canceled.

If you forgot your hard disk password, IBM will not reset your password or recover data from the hard disk. You must take your computer to an IBM reseller or an IBM marketing representative to have the hard disk drive replaced. Proof of purchase is required, and an additional charge might be required for the service.

If you forgot your supervisor password, IBM will not reset your password. You must take your computer to an IBM reseller or IBM marketing

Chapter 2. Solving computer problems 15

Solving computer problems

representative to have the system board replaced. Proof of purchase is required, and an additional charge might be required for the service.

A power switch problem

Problem: The system does not respond, and you cannot turn off the computer.

Solution: Turn off the computer by pressing and holding the power switch for

4 seconds or more. If the system is still not reset, remove the ac adapter and the battery.

Keyboard problems

Problem: The cursor does not move after the computer returns from one of the power management modes.

Solution: Make sure you followed the instructions correctly when you installed Windows with the Advanced Power Management (APM) option.

Problem: Some or all keys on the keyboard do not work.

Solution: If the problem occurred immediately after the computer returned

from standby mode, enter the power-on password if any is set.

If an external keyboard is connected, the numeric keypad on your computer does not work. Use the numeric keypad on the external keyboard.

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If an external numeric keypad or a mouse is connected:

1. Turn off the computer.

2. Remove the external numeric keypad or the mouse.

3. Turn on the computer and try using the keyboard again.

If the keyboard problem is resolved, carefully reconnect the external numeric keypad, external keyboard, or mouse, making sure that you have seated the connectors properly.

If any keys on the keyboard still do not work, have the computer serviced.

Problem: A number appears when you type a letter.

Solution: The numeric lock function is on. To disable it, press and hold Shift; then press NumLk.

Problem: All or some keys on the external numeric keypad do not work.

Solution: Make sure that the external numeric keypad is correctly connected

to the computer.

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