What would you like to do ? -------------------------- Help us find the most requested user's guides Upload your
user manual Search for a user manual Register Login and access your manuals Reset your password

	Browse all user guides
	The IBM THINKPAD T20 product forum
	Upload your user manual
	Sign-up Log in
	Help us find the most requested user's guides
	Include the add-on to download manuals from your site, forum or blog
	Frequently Asked Questions
	Contact Diplodocs team
ALL GUIDES BY CATEGORY Domestic Appliance TV & Audio Car & Motorcycle Phone Computer Camera & Video Music Sport Gardening & Housekeeping Video Game & Software Jewelry & Watch Baby & Toys Hygiene & Health Other

Note Before using this information and the product it supports, be sure to read the general information under "Important safety instructions" on page v and "Notices" on page 47. First Edition (March 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 set forth in GSA ADP Schedule Contract with IBM Corp. Contents Important safety instructions Laser compliance statement . .................... .................... ........... ........... .......... .......... .......... ......... v ix xi xi xiii xiii xiv xiv 1 2 5 7 8 11 12 12 12 13 13 14 14 14 15 15 15 16 17 18 18 22 22 23 25 28 30 31 32 Handling the ThinkPad computer . . . . . . ThinkPad don'ts . . . . . . . . . . . . . . . . ThinkPad do's . . . . . . . . . . . . . . . . . Cleaning your computer . . . . . . . . . . . Carrying your computer ........... Extending the life of your computer's battery Chapter 1. System overview Features . . . . . . . . . . . . Specifications . . . . . . . . . Using your online user's guide Starting BIOS Setup Utility . .................... ..................... ..................... .................... ..................... ............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. ............ ............. ............. ............. ............. ............. ............. ............. ............. ............. ............. Chapter 2. Protecting your computer Using passwords . . . . . . . . . . . . . Power-on password . . . . . . . . . . ....... Screen saver password Hard-disk passwords . . . . . . . . . Windows password . . . . . . . . . . Supervisor password . . . . . . . . . Network password . . . . . . . . . . . Passwords and standby mode . . . . Using the locks and the security screw Attaching the mechanical lock . . . . Using the security screw . . . . . . . Using the Asset RF ID feature . . . . . Chapter 3. Solving computer problems Troubleshooting . . . . . . . . . . . . . . . Error codes or messages ....... No error codes or messages ..... Power switch problem ......... Input problems . . . . . . . . . . . . . . Standby or hibernation problems . . . LCD problems . . . . . . . . . . . . . . Battery problems ............ Hard-disk-drive problems . . . . . . . . Software problems ........... © Copyright IBM Corp. 2000 iii Other problems . . . . . . . . . . . . Testing your computer . . . . . . . . . . Backing up your system . . . . . . . . . Backing up your system configuration Backing up your data . . . . . . . . . Recovering lost or damaged software Getting service . . . . . . . . . . . . . . ThinkPad Web site . . . . . . . . . . Recording sheets . . . . . . . . . . . .............. .............. .............. ............. .............. ............. .............. .............. .............. .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... 34 35 35 35 36 37 40 41 42 45 47 47 48 49 51 54 54 54 55 Appendix A. Product warranty and notices Notices . . . . . . . . . . . . . . . . . . . . . . . Year 2000 readiness and instructions . . . Trademarks .................. ......... Electronic emission notices Telecommunication notices ......... Product notice requirements . . . . . . . . . Notice for Australia . . . . . . . . . . . . . . Notice for New Zealand ........... Notice for European Union countries . . . . iv IBM ThinkPad T20 User's Reference Important safety instructions DANGER Electric current from power, telephone, and communication cables is hazardous. To avoid shock hazard, connect and disconnect cables as shown below when installing, moving, or opening the covers of this product or attached devices. If the 3-pin power cord is provided with this product, it must be used with a properly grounded outlet. To Connect Turn everything OFF. To Disconnect 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: Do not use your computer in or near water. 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: Replace only with a battery of the type recommended by IBM, or an equivalent. Keep the battery pack away from fire. Do not expose it to water or rain. Do not attempt to disassemble it. Do not short-circuit it. 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 T20 User's Reference DANGER There is a danger of an explosion if the backup battery is incorrectly replaced. The lithium battery (IBM P/N 02K6572 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 battery 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. DANGER Follow the instructions below when installing or reconfiguring the Mini PCI option. To avoid shock hazard, disconnect all the cables and the ac adapter when you install the Mini PCI option or open the covers of the system or attached devices. Electrical current from power, telephone, and communication cables is hazardous. CAUTION: When you have added or upgraded a Mini PCI Card or a memory card, do not use your computer until you have closed the cover. Never use the computer when the cover is open. Remove the main battery pack of the computer also. The certain circuit of the system still exists even if the power seems to be off. Do not forget to remove the ac adapter and the battery pack. Important safety instructions vii 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. viii IBM ThinkPad T20 User's Reference Laser compliance statement The CD-ROM or DVD drive, which can be installed in the IBM ThinkPad T20, 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 of 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. Important safety instructions ix 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. Save these instructions. x IBM ThinkPad T20 User's Reference Handling the ThinkPad computer Notebook computers are precision machines that require careful handling. Though your computer is designed and tested to be durable and to function reliably in normal work environments, you need to use some common sense in handling it. 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. By following these handling tips, you will get the most use and enjoyment out of your computer for a long time to come. ThinkPad don'ts Do not subject your computer to physical punishment, such as dropping or bumping. Do not place heavy objects on your computer. Do not spill or allow liquids into your computer. Do not use your computer in or near water (to avoid the danger of electrical shock). 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 or from the TrackPoint stick when the cover was pressed from the outside. Wipe such a stain gently with a dry soft cloth. If the stain remains, moisten the cloth with LCD cleaner and wipe the stain again. Be sure to dry the LCD before closing it. Do not disassemble your computer. Only an authorized IBM ThinkPad repair technician should disassemble and repair your computer. Do not scratch, twist, hit, or push the surface of your computer display. Do not place any objects between the display and the keyboard or under the keyboard. 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 Do not modify or tape the latches to keep the display open or closed. Do not turn your computer over while the ac adapter is plugged in. This could break the adapter plug. Do not move the computer when the hard disk drive is accessing data (when the indicator is blinking). Do not use or store your computer where the temperature is below 5° C or above 35° C (41° F and 95° F). 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. Do not put an operating cellular phone on the computer. The phone might cause malfunction in the computer system. Do not hard-mount your computer in a vehicle or anywhere that it is subject to strong vibration. Do not crush, drop, or physically punish the external or removable hard disk, diskette, or CD-ROM drive when it is outside your computer. Do not press on the middle part of the diskette drive or the CD-ROM drive. Do not insert a diskette at an angle. Not inserting the diskette straight into the drive can damage the drive. Do not attach more than one label to 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. Do not touch the lens on the CD-ROM tray. Do not close the CD-ROM tray until you hear the CD-ROM click into the center pivot of the CD-ROM drive. Do not touch the surface of a compact disc; handle the compact disc only by its edges. Do not connect the modem to a PBX (private branch exchange) or other digital telephone extension line. Your computer can use only a public-switched telephone network (PSTN). The 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. 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 T20 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. When installing your hard disk, diskette, or CD-ROM drive, follow the instructions in the online book and apply pressure only where needed on the device. When installing the CD-ROM or diskette drive into the UltraslimBay, make sure the ac adapter is disconnected from your computer. If you exchange drives in your computer, reinstall the plastic bezel faces (if supplied). Store your external and removable hard disk, diskette, and CD-ROM drives in the appropriate container or packaging when they are not being used. Choose a quality carrying case that will protect your computer. Store packing materials safely out of reach of children to prevent the risk of suffocation from plastic bags. Register your ThinkPad products with IBM (refer to the Web page: 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. Check the IBM Web page (http://www.ibm.com/thinkpad) periodically to get current information about your computer. Cleaning your computer Occasionally clean your computer as follows: Use a soft cloth moistened with nonalkaline detergent to wipe the exterior of the computer. Don't spray cleaner directly on the display or keyboard. Gently wipe the LCD with a dry, soft cloth. Handling the ThinkPad computer xiii Carrying your computer When carrying your computer, follow these instructions to prevent possible damage to it and your 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: 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. Once you start charging the battery pack, do not use it until it is fully charged. Whenever possible, use the ThinkPad battery power-saving modes: ­ Screen blank ­ Standby ­ Hibernation For more information, refer to the online user's guide. Decrease the brightness of the LCD. Use power management. Each operating system comes with its own power management system. xiv IBM ThinkPad T20 User's Reference Whenever the internal serial devices--the modem, the serial port, and the infrared port--are not in use, stop the supply of power to them. 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 computer xv xvi IBM ThinkPad T20 User's Reference Chapter 1. System overview Features . . . . . . . . . . . . Specifications . . . . . . . . . Using your online user's guide Starting BIOS Setup Utility . ..................... ..................... .................... ..................... 2 5 7 8 © Copyright IBM Corp. 2000 1 Features and specifications Features Processor Intel® Mobile Pentium® III processor Memory Built-in: 128 MB Maximum: 512 MB Storage device 2.5-inch hard disk drive Display The color display uses TFT technology: Resolution: ­ LCD: Up to 1024-by-768, depending on the model ­ External monitor: Up to 1600-by-1200 Brightness control Keyboard 84-key, 85-key, or 89-key TrackPoint Fn key function ThinkPad Button Volume Buttons ThinkLight 2 IBM ThinkPad T20 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: 1-MB, 2DD, 3.5-inch diskette: ­ ANSI (American National Standards Institute) X3.137 ­ ISO (International Standards Organization) 8860 ­ ECMA (European Computer Manufacturers Association) 100 2-MB, 2HD, 3.5-inch diskette: ­ ANSI X3.171 ­ ISO 9529 ­ ECMA 125 Chapter 1. System overview 3 Features and specifications External interface Serial connector (EIA-RS232D) Parallel connector (IEEE 1284A--supports an external-diskette-drive interface with attached cable and adapter) External input-device connector External-monitor connector Expansion connector PC Card slots (two Type I or Type II PC Cards, or one Type III PC Card) Headphone jack Line-in jack Microphone jack Infrared port Universal serial bus (USB) connector Telephone connector (available if the modem Mini-PCI Card or the Combo Mini-PCI Card is installed) Ethernet connector (available if the Ethernet Mini-PCI Card or the Combo Mini-PCI Card is installed) UltraPort connector to support an optional IBM digital camera Video-out connector Ultrabay 2000 4 IBM ThinkPad T20 User's Reference Specifications Specifications Size Width: 304.8 mm (12.0 in.) Depth: 248.9 mm (9.8 in.) Height: 33.0 mm (1.3 in.) Environment Maximum altitude without pressurization: 3048 m (10,000 ft) 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). Relative humidity: ­ Operating with no diskette in the drive: 8% to 95% ­ Operating with a diskette in the drive: 8% to 80% Heat output 56 W (191 Btu/hr) maximum Chapter 1. System overview 5 Specifications Electrical (ac adapter) Sine-wave input at 50 to 60 Hz Input rating of the ac adapter: 100 to 240 V ac, 50 to 60 Hz Lithium-ion battery pack Nominal voltage: 10.8 V dc Capacity: 3.6 AH 6 IBM ThinkPad T20 User's Reference Using your online user's guide Using your online user's guide Your computer offers full information and documentation online. There is no need to carry heavy manuals or other reference books. Online help is provided by ThinkPad Assistant. One way you can get access to it is to press the computer's unique ThinkPad Button to open the Access ThinkPad. There, you can do a Quick Search or search the full text of the help system. Alternatively, you can go to ThinkPad Assistant by clicking Start Programs ThinkPad Information. ThinkPad Assistant has the following sections: About your ThinkPad Everyday use Communicate Home and travel Enhancements Maintenance and upgrades Security Problem-solving How to reach IBM If you are logged on to the Internet, click one of the Internet portal buttons in Access ThinkPad. Get help and user support. Update software. Find business solutions. Learn about accessories that can help make you even more productive. Chapter 1. System overview 7 Starting BIOS Setup Utility Starting BIOS Setup Utility Your computer provides a program, called IBM BIOS Setup Utility, that enables you to select various setup parameters. The panels in this utility are as follows: Config: Set the configuration of your computer. Date/Time: Set the date and time. Password: Set a password. Startup: Set the startup device. Restart: Restart the system. Note: You can set parameters more easily by using the ThinkPad Configuration Program. For more information on this program, refer to the online user's guide. To start IBM BIOS Setup Utility, do as follows: 1. To protect yourself against accidental loss of data, use ConfigSafe (see "Backing up your system configuration" on page 35) to save your computer's current configuration. 2. Remove any diskette from the diskette drive, and then turn off the computer. 3. Turn on the computer; then, while the "Press F1 for IBM BIOS Setup Utility" message is displayed at the lower-left area of the screen, press F1. If you have set a supervisor password, the "IBM BIOS Setup Utility" menu appears after you enter the password. You can start the utility by pressing Enter instead of entering the supervisor password; then, however, you cannot change the parameters that are protected by the supervisor password. For more information, refer to the online user's guide. 4. Using the cursor keys, move to an item you want to change. When the item you want is highlighted, press Enter. A submenu is displayed. 5. Change the items you wish to change. To change the value of an item, use the F5 or F6 key. If the item has a submenu, you can display it by pressing Enter. 8 IBM ThinkPad T20 User's Reference Starting BIOS Setup Utility 6. Press F3 or Esc to exit from the submenu. If you are in a nested submenu, press Esc repeatedly until you reach the IBM BIOS Setup Utility menu. Note: If you need to restore the settings to their original state as of the time of purchase, press the F9 key to load the default settings. Also, the Restart submenu offers you such options as loading the default settings or discarding the changes. 7. Select Restart; then press Enter. Change the option you want; then press Enter. Your computer restarts. Chapter 1. System overview 9 Starting BIOS Setup Utility 10 IBM ThinkPad T20 User's Reference Chapter 2. Protecting your computer Using passwords . . . . . . . . . . . . Power-on password . . . . . . . . . Screen saver password ...... Hard-disk passwords . . . . . . . . Windows password . . . . . . . . . Supervisor password . . . . . . . . Network password . . . . . . . . . . Passwords and standby mode . . . Using the locks and the security screw Attaching the mechanical lock . . . Using the security screw . . . . . . Using the Asset RF ID feature . . . . ............... ............... ............... ............... ............... ............... ............... ............... .............. ............... ............... ............... 12 12 12 13 13 14 14 14 15 15 15 16 © Copyright IBM Corp. 2000 11 Using passwords Using passwords To make sure only authorized persons may work on your computer, you can set different kinds of passwords. Then prospective users will have to know the proper passwords in order to access your computer or data. You can set the following passwords in your computer: Power-on password Screen saver password Hard-disk passwords Windows password Supervisor password Network password Power-on password You can set a power-on password to help prevent unauthorized users from starting up your ThinkPad computer. If you set a power-on password, the password prompt appears on the screen whenever you turn on the computer. You must enter the correct password to start using the computer. Note: If you forget your power-on password, you cannot reset it. You must take the computer to an IBM reseller or IBM marketing representative to have the password canceled. To set a power-on password, refer to the online user's guide. Screen saver password You can set a screen saver password. Once the screen saver has started, only those who know the password can close the screen saver and resume operating the computer. Note: The screen saver password does not thoroughly protect your computer against unauthorized users. By turning your computer off and then on again, an unauthorized user could restart Windows without knowing your screen saver password--unless you have also set a power-on password. To set a screen saver password, refer to the online user's guide. 12 IBM ThinkPad T20 User's Reference Using passwords Hard-disk passwords Two types of hard-disk password help protect the information on your hard disk. When either type of hard-disk password has been set, the information on your hard disk cannot be accessed without one of the passwords. These are the two types of hard-disk password: User hard-disk password Master hard-disk password--which requires a user password When a user hard-disk password is set, no one can access files and applications on the hard disk without first typing the password. The system administrator sets the master hard-disk password; no one else knows or uses it. Then the system administrator sets a user password and tells it to the user. The user can change the user password. The master password, like a master key, enables the administrator to access the hard disk even if the user has changed the user password. Attention If you forget your hard-disk password, there is no way to reset your password or recover data from the hard disk. You must take your computer to an IBM reseller or marketing representative to replace the hard-disk drive. A fee will be charged for parts and service. To set a hard-disk password, refer to the online user's guide. Windows password When you start your ThinkPad computer and the Windows operating system opens, Windows will require you to enter a user ID and a password. To set a Windows password, refer to the online user's guide. Chapter 2. Protecting your computer 13 Using passwords Supervisor password The supervisor password protects the system information stored in the IBM BIOS Setup Utility so that, without knowing the password, no one can change the configuration of the computer. Attention If you forget your supervisor password, there is no way to reset it. You must take your computer to an IBM reseller or marketing representative to replace the system board. A fee will be charged for parts and service.