Lenovo ThinkPad X20 English - 12P0280 - ThinkPad X20, X21User's Reference
Lenovo ThinkPad X20 Manual
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- Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 1
i - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 2
note Before using this information and the product it supports, be sure to read the general information under Chapter 1, "Safety 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 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 3
mechanical lock 28 Chapter 5. Solving Computer Problems 29 Troubleshooting 30 Error codes or messages 30 No error codes or messages 33 Power switch problems 34 Input problems 34 Standby or hibernation problems 36 LCD problems 39 Battery problems 40 © Copyright IBM Corporation 2000 iii - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 4
up your data 46 Recovering lost or damaged software 47 Getting Service 51 ThinkPad Website 51 Recording sheet 52 Appendix A. Product warranties and notices 55 Notices 60 Year 2000 readiness and instructions 60 Electronic emission notices 61 Telecommunication notice 62 Trademarks 67 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 5
. First, remove the power coed from the outlet. Remove the signal cables from the receptades. Remove all cables from device. Turn the device ON © Copyright IBM Corporation 2000 1 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 6
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. 2 ThinkPad X20 User's Reference - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 7
pack contains a small amount of harmful substances. To avoid possible injury: Replace only with a battery of the type recommended by IBM. 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 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 8
: (1) throw or immerse the battery into water, (2) allow it to heat to more than 100 deg C (212 deg 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 instruction below when installing or - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 9
: When you have added or upgraded a Mini PCI Card or a memory card, do not use your computer until you have closed the access cover. Never use the computer with the access cover open. Before moving or installing a Mini PCI Card or memory card, remove the main battery pack of the computer. Some - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 10
6 ThinkPad X20 User's Reference - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 11
Chapter 2. Handling the ThinkPad computer Notebook computers are precision electronic devices that require careful handling. although your computer is function reliably in , you will get the most use and enjoyment out of your computer for a long time to come. © Copyright IBM Corporation 2000 7 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 12
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 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 13
ThinkPad do not's Do not place your computer closer than 13 cm (5 in.) to any electrical appliance 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 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 14
ThinkPad do not's Extended contact with your body, even through clothing, could cause discomfort or, eventually, a skin burn. 10 ThinkPad X20 User's Reference - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 15
ThinkPad do's ThinkPad do's Treat your computer like precision electronic machinery. When installing your hard disk drive, diskette drive, or CD-ROM drive, follow the instructions enables IBM to notify you about possible upgrades. Check the IBM Web page (http://www.ibm.com/thinkpad) periodically - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 16
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. 12 ThinkPad X20 User's Reference - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 17
your computer When carrying your computer, follow these instructions to prevent possible damage to it and your 3. Turn 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 the ThinkPad computer 13 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 18
pack, do not use it until it is fully charged. Whenever possible use the ThinkPad battery power-saving modes. Decrease the brightness of the LCD. Use power management. Each operating system comes with its power management system. Whenever the internal serial devices(the modem and the serial port - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 19
Chapter 3. System overview Features 16 Specifications 18 Using your Online User's Guide 19 Starting the BIOS Setup Utility 20 © Copyright IBM Corporation 2000 15 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 20
, or Intel® SpeedStep Mobile Pentium®ΙΙΙ processor Memory Built-in: 64MB or 128MB depending on LCD Up to 1600-by-1200 resolution on an external monitor Brightness control Keyboard 85-key, 86-key, or 90-key TrackPoint® pointing device Fn key function ThinkPad Button Volume buttons 16 ThinkPad - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 21
is shown circled in the following illustration) Line-in jack Universal Serial Bus (USB) connector Telephone connector (available if the modem Mini-PCI Card or the Combo is installed) UltraPort connector to support an optional IBM digital camera UltraBase X2 connector Chapter 3. System overview 17 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 22
Specifications Specifications Size With a 12.1-inch display: Width: 279.4 mm Depth: 226.8 mm Height: 23.9-27.7 mm Environment Temperature (at altitudes less than 2438 m (8000 ft.)): Operating: 5°C to 35°C (41°F to 95°F) Non-operating: -20°C to 60°C (-4°F to 140°F) Note: When you charge the battery - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 23
Communicate Home and travel Enhancements Maintenance and upgrades Security Problem solving How to reach IBM To reach IBM when you are logged onto the Internet, click one of the Internet portal buttons in Access ThinkPad. Get help and user support Update software Find business solutions Learn about - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 24
easily in Windows with the ThinkPad Configuration program. For more information on this program, refer to the Online User's Guide. You can configure your computer to your needs by use of IBM BIOS Setup Utility. To start that utility, do as follows: IBM BIOS Setup Utility Config Date/Time Password - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 25
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 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 26
22 ThinkPad X20 User's Reference - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 27
your computer Using passwords 24 Power-on passwords 24 Screen-saver passwords 24 Hard-disk passwords 25 Windows password 26 Supervisor password 26 Network password 26 Passwords and standby mode 26 Using the locks 28 Attaching the mechanical lock 28 © Copyright IBM Corporation 2000 23 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 28
your ThinkPad computer against access by unauthorized users. If you set a power-on password, the password prompt appears on the screen when you IBM reseller or IBM marketing representative to have the password canceled. Screen-saver passwords You can set a screen-saver password. Once the screen - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 29
Using passwords To set a screen-saver password, refer to the Online User's Guide. Hard-disk passwords Two types 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. - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 30
computer to an IBM reseller or marketing representative to replace the system board. A fee will be charged for parts and service. To establish a supervisor password, refer to the Online User's Guide. Network password If you work on a local area network (LAN) with your ThinkPad computer, your LAN - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 31
Using passwords Press the Fn key, you will be prompted to type your password. You must enter a power-on password or a supervisor password (if one is set). If any hard disk has a hard-disk password, it is unlocked automatically when you resume operation. If you use a hard-disk password with a hard - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 32
secure the chain on the lock to a stationary object. Refer to the instructions shipped with the mechanical lock. Note: You are responsible for evaluating, imple- menting any locking devices and security features you use. IBM makes no comments, judgments, or warranties about the function, quality - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 33
Computer Problems Troubleshooting 30 Error codes or messages 30 No error codes or messages 33 Power switch problems 34 Input problems 34 Standby or hibernation problems 36 LCD problems 39 Battery problems 40 Hard disk drive problems 41 Software problems 41 Other problems 43 Testing - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 34
Troubleshooting Troubleshooting battery reinstalled. Have the computer serviced. The EEPROM checksum is serviced. The computer turned off, because the battery is low. Connect the ac adapter to the computer and charge the battery pack, or replace the battery BIOS Setup Utility; then make sure the hard disk - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 35
turning the computer on, reinstall it. Then test the memory with PC-Doctor. The system battery is dead. Replace the battery and run the 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 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 36
to use the computer. If there is still a problem, have the computer serviced. The DOS full-screen looks smaller. 640 x 480 Hibernation error If you use a DOS application that supports only the 640x480 resolution (VGA mode), the screen image might look slightly distorted or might appear smaller - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 37
device=C:\WINDOWS\EMM386.EXE RAM to device=C:\WINDOWS\EMM386.EXE NOEMS and save this file Press F1 to go to IBM BIOS Setup Utility. Press F9 and then Enter to load the default setting. Press F10 and then Enter to restart the system. No error codes or messages Problem The screen is blank and you - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 38
still see only the cursor on the screen, have the computer serviced. Power switch problems Problem The system freezes, and you cannot turn system is still not reset, remove the ac adapter and the battery pack. Input problems Problem The cursor drifts when the computer is turned on or after it - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 39
in Device Manager, and make sure that the IBM PS/2 TrackPoint driver is installed. Make sure you followed the instructions correctly when you installed Windows with the Advanced Power Management (APM) option. If the problem occurred immediately after the computer returned from standby mode, enter - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 40
acceptable range. Refer to "Features" on page 16 and "Specifications" on page 18 If these items are correct, have the computer serviced. The battery power is getting low. Connect the ac adapter to the computer, or replace the battery pack with a fully charged one. Check whether an external monitor - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 41
Troubleshooting Your standby or hibernation mode. For Windows 98: The generic CD-ROM or DVD-ROM driver for Windows 98 accesses the internal CD-ROM or DVD-ROM drive every 3 HKEY_LOCAL_MACHINE\SYSTEM\ CurrentControlSet\Services\Cdrom\ Autorun: 0x1 > Autorun: 0 Chapter 5. Solving Computer Problems 37 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 42
Troubleshooting The Fn + F12 key combination does not cause the computer to enter hibernation mode. Enable hibernation mode as follows: For Windows 2000: 1. Start the ThinkPad Configuration program. 2. Click Power Management. 3. Click the Hibernation tab. 4. Mark the Enable hibernate support IBM - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 43
Troubleshooting LCD problems Problem The screen is blank. The screen is unreadable or distorted. Incorrect characters appear on the screen. The screen stays on even after you turn off your computer. Missing, discolored, or bright dots appear on the screen have the computer serviced. Press and hold - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 44
computer again. You cannot charge the battery when it is too hot. If the battery feels hot, remove it from the computer and allow it to cool to room temperature. After it cools, reinstall it and recharge the battery. If it still cannot be charged, have it serviced. 40 ThinkPad X20 User's Reference - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 45
Troubleshooting Hard disk drive problems Problem is not a defect. In the startup menu in IBM BIOS Setup Utility, make sure that there is no problem is not being caused by the application: Check that your computer has the minimum required memory to run the application. Refer to the manuals - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 46
Troubleshooting The main window bitmap in the ThinkPad Configuration program is distorted (Windows NT only). While you are installing Windows 95, screen disabling the Active Desktop is not effective to avoid the problem.) Close the ThinkPad Configuration program and start it again. (This is a - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 47
switch for 4 seconds or more. If the standby indicator is on and you are working under battery power, replace the battery with a fully charged one or change your power source to ac power. If you still have a problem, press and hold the power switch for 4 seconds or more; this forces the computer to - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 48
Troubleshooting The computer does not start from a device you want, such as a diskette drive. The computer does not respond. Refer to the Startup menu of the IBM BIOS Setup Utility. Make sure that the startup sequence in the IBM BIOS to the Online user's guide 44 ThinkPad X20 User's Reference - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 49
Testing your computer Testing your computer If you have a problem with your computer, you can test it by using PC set have been run and that it has found no problems, consider running additional tests in PC-Doctor. If you are preparing to contact IBM for support, be sure to print the test log so that - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 50
the main ConfigSafe window will return. The snapshot is complete. If you need to restore a configuration snapshot, open ConfigSafe and follow the on-screen instructions. Backing up your data Hard disks are reliable data storage devices. Even so, it is wise to protect yourself against accidental data - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 51
Backup window. Click OK. The Backup Wizard will guide you through backing up some or all of the files driver. Use the ThinkPad Software Selection CD. See "Using the ThinkPad Software Selection CD" on page 49 for general information. The CD-ROM also contains online help for detailed instructions - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 52
your pre-installed operating system, applications and device drivers. Depending on the model of your ThinkPad(R) computer, you can restore your pre-installed Quickly press F11 when this message displays on the screen: "To start the Product Recovery program, press F11". This message displays for only - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 53
or DVD-ROM drive to the USB connector on your computer, then instructions on the screen. 7. Restart the system by pressing Ctrl+Alt+Del or by turning the computer off and then on again. Your computer will restart with the pre-installed operating system, drivers, and software. Using the ThinkPad - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 54
50 ThinkPad X20 User's Reference WelcomeThis page displays the model and serial number of your computer, and a menu from which you can select an item by clicking it Install Software Use this page for doing the following: - Reinstalling a software application - Installing a hardware device driver - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 55
IBM parts Configuration of BIOS as part of an installation to device drivers Installation and maintenance of network operating systems (NOS) Installation and maintenance of application programs ThinkPad Website You can also contact us on the Internet for answers to your technical support - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 56
, alerting them to time-saving hints and tips and product-specific update such as modem speed and BIOS files. Interactive web-based forums are monitored around the clock by IBM specialists, complementing its support on all the major Internet service providers. You can set up your profile at: http - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 57
Getting Service Problem recording sheet Collect this needed information before you call for help. Then you will be able to get help as quickly as possible. Type of problem: Continuous Intermittent Error code Operating system and version, if available: Windows Version______ Application - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 58
Getting Service 54 ThinkPad X20 User's Reference - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 59
. Machine: IBM ThinkPad X20 and the Battery Pack Warranty Period*: Model 2661: One Year Model 2662: Three years except in some countries Battery Pack: One Year *Elements and accessories are warranted for three months. Contact your place of purchase for warranty service information. Production - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 60
designated for the Machine and will manage and install engineering changes that apply to the Machine. IBM or your reseller will specify the type of service. For a feature, conversion, or upgrade, IBM or your reseller may require that the Machine on which it is installed be 1) the designated, serial - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 61
the owner (for example, your lessor) to have IBM or your reseller service a Machine that you do not own; 2. where applicable, before service is provided - a. follow the problem determination, problem analysis, and service request procedures that IBM or your reseller provide, b. secure all programs - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 62
the charge for the Machine that is the subject of the claim. Under no circumstances is IBM liable for any of the following: 1. third-party claims against you for losses or damages profits or savings) or incidental damages, even if IBM is informed of their possibility. 58 ThinkPad X20 User's Reference - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 63
the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights and you may also have other rights which vary from jurisdiction to jurisdiction. Appendix A. Product warranties and notices 59 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 64
any license to these patents. You can send license inquiries, in writing, to the IBM Director of Licensing, IBM Corporation, North Castle Drive, Armonk, NY 10504-1784, U.S.A. Year 2000 readiness and instructions This is a Year 2000 Readiness Disclosure. A product is Year 2000 Ready if the product - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 65
IBM PCs. IBM encourages you to check periodically for updated information. Electronic emission notices Federal Communications Commission (FCC) Statement ThinkPad in accordance with the instructions, may cause harmful is connected. Consult an IBM authorized dealer or service representative for help. - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 66
laws of the Member States relating to electro-magnetic compatibility. IBM cannot accept responsibility for any failure to satisfy the protection requirements of non-IBM option cards. A declaration of Conformity with the requirements of the Directive has been signed by IBM United Kingdom Limited - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 67
be given advance notice to give you an opportunity to maintain uninterrupted service. 5. If you experience trouble with this product, contact your authorized reseller, or call IBM. In the United States, call IBM at 1-800-772-2227. In Canada, call IBM at 1-800-565-3344. You may be required to present - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 68
you experience trouble with the device, contact your Authorized Reseller or see the Diagnostics section of this manual for information. 7. This device may not be used on coin service provided by the le raccorder aux installations de l'entreprise locale de telecommu- 64 ThinkPad X20 User's Reference - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 69
les regions rurales. Avertissement : L'utilisateur ne doit pas tenter de faire ces raccordements lui-meme; il doit avoir recours a un service d'inspection des installations electriques ou a un electricien, selon le cas AVIS : L'indice d'equivalence de la sonnerie (IES) assigne a chaque dispositif - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 70
to support pulse dialling. Use of pulse dialling, when this equipment is connected to the same line as other equipment, may give rise to bell tinkle or noise and may also cause a false answer condition. Should such problems occur, the user should NOT contact the Telecom Faults Service. 66 ThinkPad - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 71
Service. event of problems, you should pulse dialing mode is supported only for PBXs. To modem" in the online user's guide. For Spain: A change in IBM Corporation in the United States or other countries or both: IBM MMPM/2 Multimedia Presentation Manager/2 PC Card Director PS/2 RediSafe ThinkPad - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 72
Corporation. Pentium and Celeron™ are trademark or registered trademark of Intel Corporation in the U.S. and other countries. Other company, product, and service names, which may be denoted by a double asterisk (**), may be trademarks or service marks of others. 68 ThinkPad X20 User's Reference - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 73
that support power management in computers with power manageable hardware. The APM software interface allows applications, operating systems, device drivers, and the APM BIOS to work together to reduce power consumption, without reducing system performance. bay. The ThinkPad X20 compartment - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 74
A file that contains the code needed to use an attached device. Operating system loads device drivers for screens. (2) A program that enables a computer to communicate with a specific peripheral device-for example, a printer, a video disc player, or a CD drive. (3) A collection of subroutines that - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 75
addressing. icon. A graphic symbol, displayed on a screen, that a user can point to with a 1024 bytes. LAN. Local area network. LCD. Liquid crystal display. LPT1 or LPT2. The kilobytes. About 1 million bytes. memory. Often referred to as randomaccess memory (RAM), measured in kilo- parallel port. - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 76
whole LCD screen by adjusting the number of character dots vertically. VESA. Video Electronics Standards Association. VGA. Video graphics adapter, a video mode that produces up to 640-by-480 resolution. VSYNC. Vertical synchronization frequency. XMS. Extended memory specification. 72 ThinkPad X20 - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 77
specifications 18 specifications 16, 18 environment 18 input voltage 18 size 18 temperature 18 T temperature, machine specifications 18 ThinkPad Software Selection CD, using 49 troubleshooting battery problems 40 Hard disk drive problems 41 hibernation problems 36 © Copyright IBM Corporation - Lenovo ThinkPad X20 | English - 12P0280 - ThinkPad X20, X21User's Reference - Page 78
troubleshooting (continued) LCD problems 39 no error codes 33 no error messages 33 other problems 43 Power switch problems 34 software problems 41 standby problems 36 W warranty product 55 website 51 74 ThinkPad X20 User's Reference
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