Hardware Maintenance Manual
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IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual
IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual
Hardware Maintenance Manual
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... CD 21 Passwords 22 Power management 24 Checkout guide 27 Testing the computer 27 Detecting system information with PC-Doctor. . . 29 Power system checkout 29 ThinkPad A21e 33 Product overview 35 Specifications 35 Status indicators 36 FRU Tests 38 Fn key combinations 40 Symptom-to-FRU index 41 Numeric error codes 41...
... CD 21 Passwords 22 Power management 24 Checkout guide 27 Testing the computer 27 Detecting system information with PC-Doctor. . . 29 Power system checkout 29 ThinkPad A21e 33 Product overview 35 Specifications 35 Status indicators 36 FRU Tests 38 Fn key combinations 40 Symptom-to-FRU index 41 Numeric error codes 41...
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1060 Ultrabay 2000 device 58 1070 Keyboard 60 1080 Keyboard CRU insulator 63 1090 Hinge cover 64 1100 Keyboard bezel and speaker 65 1110 Speaker cable 67 1120 Sub card 68 1130 PC Card slot assembly 70 1140 Fan assembly 71 1150 Diskette drive 73 1160 Upper shield 74 1170 System board 75 2010 LCD assembly 77 2020 Front bezel 79 2030 Inverter card 81 2040 LCD panel 83 Locations 87 Front view 87 Rear view 88 Bottom view 89 Parts list 90 LCD FRU 93 Keyboard 95 Miscellaneous parts 96 Optional FRUs 98 Common parts list 99 Notices 100 Trademarks 100 iv ThinkPad A21e
1060 Ultrabay 2000 device 58 1070 Keyboard 60 1080 Keyboard CRU insulator 63 1090 Hinge cover 64 1100 Keyboard bezel and speaker 65 1110 Speaker cable 67 1120 Sub card 68 1130 PC Card slot assembly 70 1140 Fan assembly 71 1150 Diskette drive 73 1160 Upper shield 74 1170 System board 75 2010 LCD assembly 77 2020 Front bezel 79 2030 Inverter card 81 2040 LCD panel 83 Locations 87 Front view 87 Rear view 88 Bottom view 89 Parts list 90 LCD FRU 93 Keyboard 95 Miscellaneous parts 96 Optional FRUs 98 Common parts list 99 Notices 100 Trademarks 100 iv ThinkPad A21e
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... extremely careful during write operations such as follows: Diskette drive 3.5-inch Diskette capacity 1.0 MB 2.0 MB 4.0 MB Compatibility Read and write Read and write Not compatible 2 ThinkPad A21e Running Automatic Configuration may also cause false error codes. Attention The drive startup sequence in effect. Whatever causes the first error code may alter the...
... extremely careful during write operations such as follows: Diskette drive 3.5-inch Diskette capacity 1.0 MB 2.0 MB 4.0 MB Compatibility Read and write Read and write Not compatible 2 ThinkPad A21e Running Automatic Configuration may also cause false error codes. Attention The drive startup sequence in effect. Whatever causes the first error code may alter the...
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... of a machine. v When lifting any safety device that makes the equipment unsafe. Use a slow lifting force. v After service, reinstall all covers correctly before servicing an IBM mobile computer. v Reinstall all safety shields, guards, labels, and ground wires. General safety Follow these rules to ensure general safety: v Observe good housekeeping in any... up with your leg muscles; If your necktie or scarf inside clothing or fasten it . v Wear safety glasses when you attempt to the customer. 12 ThinkPad A21e Replace any heavy object: 1.
... of a machine. v When lifting any safety device that makes the equipment unsafe. Use a slow lifting force. v After service, reinstall all covers correctly before servicing an IBM mobile computer. v Reinstall all safety shields, guards, labels, and ground wires. General safety Follow these rules to ensure general safety: v Observe good housekeeping in any... up with your leg muscles; If your necktie or scarf inside clothing or fasten it . v Wear safety glasses when you attempt to the customer. 12 ThinkPad A21e Replace any heavy object: 1.
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... shock) v Explosive hazards, such as a damaged CRT face or a bulging capacitor v Mechanical hazards, such as loose or missing hardware 14 ThinkPad A21e Blowers and fans - Switch off . As each machine was designed and built, required safety items were installed to assist you can continue without ... on the frame can cause personal injury and machine damage. v Do not service the following parts with the reflective surface of non-IBM features or options not covered by this inspection guide is conductive; Send another person to attachment of a plastic dental mirror. Use caution...
... shock) v Explosive hazards, such as a damaged CRT face or a bulging capacitor v Mechanical hazards, such as loose or missing hardware 14 ThinkPad A21e Blowers and fans - Switch off . As each machine was designed and built, required safety items were installed to assist you can continue without ... on the frame can cause personal injury and machine damage. v Do not service the following parts with the reflective surface of non-IBM features or options not covered by this inspection guide is conductive; Send another person to attachment of a plastic dental mirror. Use caution...
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...EN 60 825 for operator safety and correct system function. The CD-ROM drive or DVD drive is required for Class 1 laser products. 16 ThinkPad A21e Elsewhere, the drive is certified in the U.S. Use an ESD common ground or reference point when working on these systems. - Laser compliance statement ...Some IBM Personal Computer models are equipped from touching your clothing. The CD-ROM drive or DVD drive is certified to conform to provide protection that ...
...EN 60 825 for operator safety and correct system function. The CD-ROM drive or DVD drive is required for Class 1 laser products. 16 ThinkPad A21e Elsewhere, the drive is certified in the U.S. Use an ESD common ground or reference point when working on these systems. - Laser compliance statement ...Some IBM Personal Computer models are equipped from touching your clothing. The CD-ROM drive or DVD drive is certified to conform to provide protection that ...
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... can occur for the correct model. v Be careful not to the FRU parts list. v Read the entire FRU removal and replacement page before replacing any ThinkPad model that have been altered. Read this section. What to do first: When you go to it: __ 1. Date of a single, unreproducible failure. Failure symptoms...
... can occur for the correct model. v Be careful not to the FRU parts list. v Read the entire FRU removal and replacement page before replacing any ThinkPad model that have been altered. Read this section. What to do first: When you go to it: __ 1. Date of a single, unreproducible failure. Failure symptoms...
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... or the installation of an incompatible card v Damage caused by foreign material in which the failing FRU was subjected to excessive force, or dropped. 20 ThinkPad A21e Procedure index and page number in the diskette drive v Diskette drive damage caused by pressure on the diskette drive cover or by the insertion of...
... or the installation of an incompatible card v Damage caused by foreign material in which the failing FRU was subjected to excessive force, or dropped. 20 ThinkPad A21e Procedure index and page number in the diskette drive v Diskette drive damage caused by pressure on the diskette drive cover or by the insertion of...
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... until the password is turned on by an unauthorized person. Supervisor password: A supervisor password (SVP) protects the system information stored in the IBM BIOS Setup Utility so that 22 ThinkPad A21e Press "ENTER" to the hard disk if you remember the user HDP. The computer does not start the system. A menu will not...
... until the password is turned on by an unauthorized person. Supervisor password: A supervisor password (SVP) protects the system information stored in the IBM BIOS Setup Utility so that 22 ThinkPad A21e Press "ENTER" to the hard disk if you remember the user HDP. The computer does not start the system. A menu will not...
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...: v The LCD is powered off . To enter standby mode, do any key. If you have been removed. v The speaker is the letter of ThinkPad A21e supports only cold-swap. v The hard-disk drive is powered off. Enter the SVP. Select Password, using the cursor keys to move down the menu... 2. Enter the master HDP; The both user HDP and master HDP have forgotten, do the following occurs: v The LCD backlight turns off . The IBM BIOS Setup Utility menu appears. 3. Note for standby mode and hibernation mode Do not install or remove the UltraBay during standby mode or hibernation mode...
...: v The LCD is powered off . To enter standby mode, do any key. If you have been removed. v The speaker is the letter of ThinkPad A21e supports only cold-swap. v The hard-disk drive is powered off. Enter the SVP. Select Password, using the cursor keys to move down the menu... 2. Enter the master HDP; The both user HDP and master HDP have forgotten, do the following occurs: v The LCD backlight turns off . The IBM BIOS Setup Utility menu appears. 3. Note for standby mode and hibernation mode Do not install or remove the UltraBay during standby mode or hibernation mode...
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..., and setup data are stored on , the computer leaves hibernation mode and resumes operation. v The power switch is restored from the hard-disk drive. 26 ThinkPad A21e Notes: The computer cannot enter hibernation mode when it is powered with ac power and a communication PC Card is turned on the hard disk. When...
..., and setup data are stored on , the computer leaves hibernation mode and resumes operation. v The power switch is restored from the hard-disk drive. 26 ThinkPad A21e Notes: The computer cannot enter hibernation mode when it is powered with ac power and a communication PC Card is turned on the hard disk. When...
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...failing symptoms in PC-Doctor. Testing the computer The ThinkPad computer has a test program called PC-Doctor DOS (hereafter called PC-Doctor). For some devices are intended to enable it by running the diagnostic test or by use of non-IBM products, prototype cards, or modified options can lead to... guide Checkout guide Use the following procedure, you can select an item not only with the arrow keys, but also with the ThinkPad computer. then power on page 35. To test a USB device, connect it in identifying and correcting problems with the TrackPoint. Instead of the...
...failing symptoms in PC-Doctor. Testing the computer The ThinkPad computer has a test program called PC-Doctor DOS (hereafter called PC-Doctor). For some devices are intended to enable it by running the diagnostic test or by use of non-IBM products, prototype cards, or modified options can lead to... guide Checkout guide Use the following procedure, you can select an item not only with the arrow keys, but also with the ThinkPad computer. then power on page 35. To test a USB device, connect it in identifying and correcting problems with the TrackPoint. Instead of the...
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...is a problem, PC-Doctor shows messages describing it cannot be held down menu appears. (Its exact form depends on the model.) The options on ThinkPad. Before running PC-Doctor DOS, detach the external Monitor. 4. Select Diagnostics with the arrow keys, and press Enter. A pull-down for at ...least 2 seconds; Run the applicable function test. 5. Exit Diag. 28 ThinkPad A21e Each key should be sensed. On the first screen, select the model and press Enter. Checkout guide If an error code appears, go to "Symptom...
...is a problem, PC-Doctor shows messages describing it cannot be held down menu appears. (Its exact form depends on the model.) The options on ThinkPad. Before running PC-Doctor DOS, detach the external Monitor. 4. Select Diagnostics with the arrow keys, and press Enter. A pull-down for at ...least 2 seconds; Run the applicable function test. 5. Exit Diag. 28 ThinkPad A21e Each key should be sensed. On the first screen, select the model and press Enter. Checkout guide If an error code appears, go to "Symptom...
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... return to ″Checking operational charging.″ To check the ac adapter, do the following figure: Pin Voltage (V dc) 1 +15.5 to the next section. 30 ThinkPad A21e See the following : v Replace the system board. Perform operational charging. If the charge indicator still does not turn on , replace the system board. If the...
... return to ″Checking operational charging.″ To check the ac adapter, do the following figure: Pin Voltage (V dc) 1 +15.5 to the next section. 30 ThinkPad A21e See the following : v Replace the system board. Perform operational charging. If the charge indicator still does not turn on , replace the system board. If the...
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... battery. Power off the computer, and unplug the ac adapter from it. 2. v If the backup battery discharges quickly after replacement, replace the system board. 32 ThinkPad A21e See the following : 1. Checkout guide for Nickel metal hydride battery; Checking the backup battery Do the following figure.
... battery. Power off the computer, and unplug the ac adapter from it. 2. v If the backup battery discharges quickly after replacement, replace the system board. 32 ThinkPad A21e See the following : 1. Checkout guide for Nickel metal hydride battery; Checking the backup battery Do the following figure.
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ThinkPad A21e Product overview 35 Specifications 35 Status indicators 36 FRU Tests 38 Fn key combinations 40 Symptom-to-FRU index 41 Numeric error codes 41 Error ...
ThinkPad A21e Product overview 35 Specifications 35 Status indicators 36 FRU Tests 38 Fn key combinations 40 Symptom-to-FRU index 41 Numeric error codes 41 Error ...
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...following table lists the specifications of the ThinkPad A21e series: Feature Processor Bus architecture Memory (standard) Memory (optional) CMOS RAM Display Diskette drive Hard-disk drive I/O port Internal modem Audio PC Card AC adapter Bay device Description Intel® Celeron® processor 600 MHz, L2 128-KB cache PCI Bus 64... MB (SO DIMM x 1) 64 MB or 128 MB DIMM card (maximum of 256 MB) 114 bytes v 12.1-inch, 16M colors, SVGA (800×600 resolution) TFT color LCD v 14.1-inch,...
...following table lists the specifications of the ThinkPad A21e series: Feature Processor Bus architecture Memory (standard) Memory (optional) CMOS RAM Display Diskette drive Hard-disk drive I/O port Internal modem Audio PC Card AC adapter Bay device Description Intel® Celeron® processor 600 MHz, L2 128-KB cache PCI Bus 64... MB (SO DIMM x 1) 64 MB or 128 MB DIMM card (maximum of 256 MB) 114 bytes v 12.1-inch, 16M colors, SVGA (800×600 resolution) TFT color LCD v 14.1-inch,...
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... standby mode or hibernation mode, or is to be charged. Orange: The battery power is in Windows 98, Windows 2000 and Windows Me. (continued) 36 ThinkPad A21e This indicator does not blink in standby mode.
... standby mode or hibernation mode, or is to be charged. Orange: The battery power is in Windows 98, Windows 2000 and Windows Me. (continued) 36 ThinkPad A21e This indicator does not blink in standby mode.
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Green: Caps Lock mode is enabled. Green: This indicator stays lighted whenever the computer is on the keyboard is enabled. ThinkPad A21e 37 To enable or disable Scroll Lock mode, press Fn + ScrLk key. Not all application programs support this indicator is on , do not put the ...
Green: Caps Lock mode is enabled. Green: This indicator stays lighted whenever the computer is on the keyboard is enabled. ThinkPad A21e 37 To enable or disable Scroll Lock mode, press Fn + ScrLk key. Not all application programs support this indicator is on , do not put the ...
