Hardware Maintenance Manual
Page 8
Whatever causes the first error code may have been changed. How to use error messages Use the error codes displayed on the screen to run a low-level format before replacing a hard-disk drive. Be 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 T20, T21, T22, T23 (MT 2647/2648) If more than one error code is displayed, begin the diagnosis with the diskettes for it is listed in the ...
Whatever causes the first error code may have been changed. How to use error messages Use the error codes displayed on the screen to run a low-level format before replacing a hard-disk drive. Be 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 T20, T21, T22, T23 (MT 2647/2648) If more than one error code is displayed, begin the diagnosis with the diskettes for it is listed in the ...
Hardware Maintenance Manual
Page 30
... screen, select the operating system you want, and follow the instructions on the screen... for only a few seconds. When the process is not displayed, you are using Windows XP, three messages (F1, F11, and F12) appear on the screen... Create a Recovery Repair diskette. Turn on -screen instructions. 6. If you can use a Recovery... or another operating system, the startup screen is displayed first, and then the ... the on the computer. One of the screen. Then the Product Recovery program main menu opens...ThinkPad T20, T21, T22, T23 (MT 2647/2648) Turn off the computer. 3. ...
... screen, select the operating system you want, and follow the instructions on the screen... for only a few seconds. When the process is not displayed, you are using Windows XP, three messages (F1, F11, and F12) appear on the screen... Create a Recovery Repair diskette. Turn on -screen instructions. 6. If you can use a Recovery... or another operating system, the startup screen is displayed first, and then the ... the on the computer. One of the screen. Then the Product Recovery program main menu opens...ThinkPad T20, T21, T22, T23 (MT 2647/2648) Turn off the computer. 3. ...
Hardware Maintenance Manual
Page 32
... has been set, a prompt for it to get a message asking which operating system to complete the recovery. To use it appears on the screen whenever the computer is booted. Passwords As many as three passwords may be booted. Hard-disk password: There are two hard-disk passwords (HDPs):...operating system can be needed for the system administrator, who can use the Recovery Repair diskette: 1. Press Enter to the system user. 26 ThinkPad T20, T21, T22, T23 (MT 2647/2648) The Master + User mode requires two HDPs; Shut down and turn on the computer. 3. Insert the Recovery Repair...
... has been set, a prompt for it to get a message asking which operating system to complete the recovery. To use it appears on the screen whenever the computer is booted. Passwords As many as three passwords may be booted. Hard-disk password: There are two hard-disk passwords (HDPs):...operating system can be needed for the system administrator, who can use the Recovery Repair diskette: 1. Press Enter to the system user. 26 ThinkPad T20, T21, T22, T23 (MT 2647/2648) The Master + User mode requires two HDPs; Shut down and turn on the computer. 3. Insert the Recovery Repair...
Hardware Maintenance Manual
Page 34
Power on the "LCD off timer" in IBM BIOS Setup Utility expires, v The LCD backlight turns off . 28 ThinkPad T20, T21, T22, T23 (MT 2647/2648) The IBM BIOS Setup Utility menu appears. 3. Press F10. 8. Screen blank mode Screen blank mode has three variants, as follows: 1. If you press Fn+F3, or ...off . The hard-disk drive can be made available to the servicer, IBM does not provide any services to reset the user HDPs or to move down the menu. 4. Enter the master HDP; Notes v Screen blank mode is called standby mode in the Setup Configuration window. Select ...
Power on the "LCD off timer" in IBM BIOS Setup Utility expires, v The LCD backlight turns off . 28 ThinkPad T20, T21, T22, T23 (MT 2647/2648) The IBM BIOS Setup Utility menu appears. 3. Press F10. 8. Screen blank mode Screen blank mode has three variants, as follows: 1. If you press Fn+F3, or ...off . The hard-disk drive can be made available to the servicer, IBM does not provide any services to reset the user HDPs or to move down the menu. 4. Enter the master HDP; Notes v Screen blank mode is called standby mode in the Setup Configuration window. Select ...
Hardware Maintenance Manual
Page 35
... do any key. To cause the computer to what you when the battery is powered off. This default low-battery behavior is appropriate. To end screen blank mode and resume normal operation, press any operation with the keyboard, the TrackPoint, the hard disk, the parallel connector, or the diskette drive ...only the low-battery alarm is powered off . v The hard-disk drive is available. If the time set on the "Turn off monitor" timer in screen blank mode: v The LCD is low, and then the computer enters the power-saving mode automatically. To enter standby mode, press Fn+F4.
... do any key. To cause the computer to what you when the battery is powered off. This default low-battery behavior is appropriate. To end screen blank mode and resume normal operation, press any operation with the keyboard, the TrackPoint, the hard disk, the parallel connector, or the diskette drive ...only the low-battery alarm is powered off . v The hard-disk drive is available. If the time set on the "Turn off monitor" timer in screen blank mode: v The LCD is low, and then the computer enters the power-saving mode automatically. To enter standby mode, press Fn+F4.
Hardware Maintenance Manual
Page 38
...you initialize the computer configuration, some possible configurations of the procedure. then power on page 35, and check the power sources. 32 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Checkout guide Checkout guide Use the following procedure, you can select an item not only with the arrow keys... are intended to the USB connector of pressing Enter, click the left button. 1. The use of the IBM BIOS Setup Utility before you need to enable it to test only IBM products. On the IBM BIOS Setup Utility screen, press F9, Enter, F10, and then Enter. Instead of the computer.
...you initialize the computer configuration, some possible configurations of the procedure. then power on page 35, and check the power sources. 32 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Checkout guide Checkout guide Use the following procedure, you can select an item not only with the arrow keys... are intended to the USB connector of pressing Enter, click the left button. 1. The use of the IBM BIOS Setup Utility before you need to enable it to test only IBM products. On the IBM BIOS Setup Utility screen, press F9, Enter, F10, and then Enter. Instead of the computer.
Hardware Maintenance Manual
Page 39
... the first screen, select the model and press Enter. The main panel of PC-Doctor appears. 3. Quick v Keyboard v Video v Internal Speaker v Mouse v Joystick Test v Diskette v System Load v CD-ROM/DVD Test v Stereo Speaker v 802.11 Wireless Radio Test(*) Notes: v In the Keyboard test in the IBM BIOS Setup ...Legacy Floppy Drives is Enabled in Interactive Tests, the Fn key is needed to the ThinkPad. A pull-down for some models. Each key should be sensed. v Wireless LAN test and 802.11 Wireless Radio Test is attached to be enabled and initialized. v To test Digital Signature Chip...
... the first screen, select the model and press Enter. The main panel of PC-Doctor appears. 3. Quick v Keyboard v Video v Internal Speaker v Mouse v Joystick Test v Diskette v System Load v CD-ROM/DVD Test v Stereo Speaker v 802.11 Wireless Radio Test(*) Notes: v In the Keyboard test in the IBM BIOS Setup ...Legacy Floppy Drives is Enabled in Interactive Tests, the Fn key is needed to the ThinkPad. A pull-down for some models. Each key should be sensed. v Wireless LAN test and 802.11 Wireless Radio Test is attached to be enabled and initialized. v To test Digital Signature Chip...
Hardware Maintenance Manual
Page 40
... v Print Log v Save Log v Full Erase Hard Drive v Quick Erase Hard Drive 34 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Run the applicable function test. 5. Use the cursor keys and ESC to select. 4. Follow the instructions on the screen. To exit the test, select Quit - Press ENTER to move in menus. If... Run Quick Test CPU/Coprocessor Systemboard Video Adapter Serial Ports Parallel Ports Fixed Disks Diskette Drives Other Devices ZIP Drive LS-120/240 Drive Communication Wireless LAN Memory Test -
... v Print Log v Save Log v Full Erase Hard Drive v Quick Erase Hard Drive 34 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Run the applicable function test. 5. Use the cursor keys and ESC to select. 4. Follow the instructions on the screen. To exit the test, select Quit - Press ENTER to move in menus. If... Run Quick Test CPU/Coprocessor Systemboard Video Adapter Serial Ports Parallel Ports Fixed Disks Diskette Drives Other Devices ZIP Drive LS-120/240 Drive Communication Wireless LAN Memory Test -
Hardware Maintenance Manual
Page 51
... is resuming normal operation. then the indicator turns off , the system is ready to be used as screen-scroll function keys, but is low. Indicator 4 Scroll lock 5 Power on 6 Battery 7 Standby status...detached. The battery needs to move the cursor. Green: The computer is fully charged. ThinkPad T20, T21, T22 and T23 series 45 To enable or disable Scroll Lock mode, press Fn + ScrLk key. Blinking...power-on indicator is on indicator and the standby indicator are using Windows 2000 or Windows XP, the Ultrabay status indicator does not blink while an Ultrabay 2000 device is off . ...
... is resuming normal operation. then the indicator turns off , the system is ready to be used as screen-scroll function keys, but is low. Indicator 4 Scroll lock 5 Power on 6 Battery 7 Standby status...detached. The battery needs to move the cursor. Green: The computer is fully charged. ThinkPad T20, T21, T22 and T23 series 45 To enable or disable Scroll Lock mode, press Fn + ScrLk key. Blinking...power-on indicator is on indicator and the standby indicator are using Windows 2000 or Windows XP, the Ultrabay status indicator does not blink while an Ultrabay 2000 device is off . ...
Hardware Maintenance Manual
Page 52
...Interactive Tests --> Mouse Diagnostics --> Fixed Disks (continued) 46 ThinkPad T20, T21, T22, T23 (MT 2647/2648) FRU System board Power LCD unit ...work, check the configuration in Diagnostics --> Communication: a. Diagnostics --> Systemboard Diagnostics --> Other Devices --> IBM AC Adapter, IBM Battery 1 (IBM Battery 2) 1. Lucent Modem (M2) Loopback b. Intel SP Modem Loopback/DTMF i. 3Com MiniPCI ...the TrackPoint is necessary. After you use the TrackPoint, the pointer may drift on the screen for each FRU. Intel SP Modem Register h. Diagnostics --> Video Adapter 2. Replace the ...
...Interactive Tests --> Mouse Diagnostics --> Fixed Disks (continued) 46 ThinkPad T20, T21, T22, T23 (MT 2647/2648) FRU System board Power LCD unit ...work, check the configuration in Diagnostics --> Communication: a. Diagnostics --> Systemboard Diagnostics --> Other Devices --> IBM AC Adapter, IBM Battery 1 (IBM Battery 2) 1. Lucent Modem (M2) Loopback b. Intel SP Modem Loopback/DTMF i. 3Com MiniPCI ...the TrackPoint is necessary. After you use the TrackPoint, the pointer may drift on the screen for each FRU. Intel SP Modem Register h. Diagnostics --> Video Adapter 2. Replace the ...
Hardware Maintenance Manual
Page 54
... 2000 and Windows XP, you must have IBM PM device driver installed on again, press any key or the TrackPoint stick. The LCD becomes less bright. 48 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Turn the ThinkLight on or off the LCD display, leaving the screen blank. Product overview... Fn key combinations The following three patterns by turns: v CRT display v LCD+CRT display v LCD Turn screen expansion on or off. (...
... 2000 and Windows XP, you must have IBM PM device driver installed on again, press any key or the TrackPoint stick. The LCD becomes less bright. 48 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Turn the ThinkLight on or off the LCD display, leaving the screen blank. Product overview... Fn key combinations The following three patterns by turns: v CRT display v LCD+CRT display v LCD Turn screen expansion on or off. (...
Hardware Maintenance Manual
Page 59
... password is disabled. LCD assembly. 3. POST error. Make sure that Alert On LAN 2 in IBM BIOS Setup Utility is set the Screen expansion function. A power-on password or a supervisor password is connected tightly and correctly. 2. ThinkPad T20, T21, T22 and T23 series 53 Two short beeps with error codes. DIMM. 3. Reseat DIMM. 2. Reseat the...
... password is disabled. LCD assembly. 3. POST error. Make sure that Alert On LAN 2 in IBM BIOS Setup Utility is set the Screen expansion function. A power-on password or a supervisor password is connected tightly and correctly. 2. ThinkPad T20, T21, T22 and T23 series 53 Two short beeps with error codes. DIMM. 3. Reseat DIMM. 2. Reseat the...
Hardware Maintenance Manual
Page 60
... LCD. v SXGA+: 11 or more bright dots, 13 or more bright and dark dots. Reseat the LCD connectors. 2. LCD assembly. 54 ThinkPad T20, T21, T22, T23 (MT 2647/2648) v LCD screen unreadable. Horizontal or vertical lines displayed on , and a blank LCD during POST. Symptom-to-FRU index LCD-related symptoms Important The TFT.... System board. 1. v LCD contrast cannot be adjusted. The LCD should be replaced if the number of missing, discolored, or lighted dots in sequence System board. 1. v Screen abnormal.
... LCD. v SXGA+: 11 or more bright dots, 13 or more bright and dark dots. Reseat the LCD connectors. 2. LCD assembly. 54 ThinkPad T20, T21, T22, T23 (MT 2647/2648) v LCD screen unreadable. Horizontal or vertical lines displayed on , and a blank LCD during POST. Symptom-to-FRU index LCD-related symptoms Important The TFT.... System board. 1. v LCD contrast cannot be adjusted. The LCD should be replaced if the number of missing, discolored, or lighted dots in sequence System board. 1. v Screen abnormal.
Hardware Maintenance Manual
Page 63
...the system unit" v "Retaining the UUID" Restoring the serial number of the system unit When the computer was manufactured, the EEPROM on the screen. Never use the correct screw. Read S/N data from EEPROM. From the main menu, select 1. Follow the instructions on the system board ...was loaded with the serial numbers of the system and all screws firmly to your computer at production ThinkPad T20, T21, T22 and T23 series 57 Use a new one. Make sure the screws are tightened firmly. Select 1. Retaining serial numbers This section includes the ...
...the system unit" v "Retaining the UUID" Restoring the serial number of the system unit When the computer was manufactured, the EEPROM on the screen. Never use the correct screw. Read S/N data from EEPROM. From the main menu, select 1. Follow the instructions on the system board ...was loaded with the serial numbers of the system and all screws firmly to your computer at production ThinkPad T20, T21, T22 and T23 series 57 Use a new one. Make sure the screws are tightened firmly. Select 1. Retaining serial numbers This section includes the ...