Hardware Maintenance Manual
Page 1
IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual April 2002 This manual supports: ThinkPad T20, T21, T22, T23 (MT 2647/2648) ThinkPad Dock (MT 2631)
IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual April 2002 This manual supports: ThinkPad T20, T21, T22, T23 (MT 2647/2648) ThinkPad Dock (MT 2631)
Hardware Maintenance Manual
Page 3
... this manual along with the advanced diagnostic tests to troubleshoot problems. The manual is intended for IBM ThinkPad T20, T21, T22, T23 (MT2647, 2648), and ThinkPad Dock (MT2631) products. Use this manual This manual contains service and reference information for trained ... on page 3, "Safety information" on page 13, and "Laser compliance statement" on page 18. © Copyright IBM Corp. 2002 iii Before servicing an IBM ThinkPad product, be sure to troubleshoot problems effectively. v The product-specific section includes service, reference, and product-specific parts ...
... this manual along with the advanced diagnostic tests to troubleshoot problems. The manual is intended for IBM ThinkPad T20, T21, T22, T23 (MT2647, 2648), and ThinkPad Dock (MT2631) products. Use this manual This manual contains service and reference information for trained ... on page 3, "Safety information" on page 13, and "Laser compliance statement" on page 18. © Copyright IBM Corp. 2002 iii Before servicing an IBM ThinkPad product, be sure to troubleshoot problems effectively. v The product-specific section includes service, reference, and product-specific parts ...
Hardware Maintenance Manual
Page 5
... Passwords 26 Power management 28 Checkout guide 32 Testing the computer 33 Detecting system information with PC-Doctor. . . 34 Power system checkout 35 ThinkPad T20, T21, T22 and T23 series. . . . . 39 Product overview 41 Specifications 43 Status indicators 45 FRU Tests 47 Fn key combinations 48 Symptom-to-FRU index 49 Numeric... replacement notices 56 Screw notices 56 Retaining serial numbers 57 Removing and replacing a FRU 59 1010 Battery pack 60 1020 Backup battery 61 © Copyright IBM Corp. 2002 v
... Passwords 26 Power management 28 Checkout guide 32 Testing the computer 33 Detecting system information with PC-Doctor. . . 34 Power system checkout 35 ThinkPad T20, T21, T22 and T23 series. . . . . 39 Product overview 41 Specifications 43 Status indicators 45 FRU Tests 47 Fn key combinations 48 Symptom-to-FRU index 49 Numeric... replacement notices 56 Screw notices 56 Retaining serial numbers 57 Removing and replacing a FRU 59 1010 Battery pack 60 1020 Backup battery 61 © Copyright IBM Corp. 2002 v
Hardware Maintenance Manual
Page 6
... PCI cover 133 3020 ThinkPad Dock top cover 136 Locations 140 Front view 140 Rear view 141 Bottom view 142 Parts list 143 T20, T21, T22 and T23 series model matrix 146 Overall 147 AC adapters 156 LCD FRUs 157 Keyboard 160 Recovery CDs 161 Miscellaneous parts 170 ...Optional FRUs 171 Common parts list 172 Notices 174 Trademarks 174 vi ThinkPad T20, T21, T22, T23 (MT 2647/2648)
... PCI cover 133 3020 ThinkPad Dock top cover 136 Locations 140 Front view 140 Rear view 141 Bottom view 142 Parts list 143 T20, T21, T22 and T23 series model matrix 146 Overall 147 AC adapters 156 LCD FRUs 157 Keyboard 160 Recovery CDs 161 Miscellaneous parts 170 ...Optional FRUs 171 Common parts list 172 Notices 174 Trademarks 174 vi ThinkPad T20, T21, T22, T23 (MT 2647/2648)
Hardware Maintenance Manual
Page 8
... 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) How to use error messages Use the error codes displayed on the screen to run a low-level format before replacing a hard...
... 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) How to use error messages Use the error codes displayed on the screen to run a low-level format before replacing a hard...
Hardware Maintenance Manual
Page 20
... covers correctly before : - Do not use this type of mat to lock the wall box in your pocket or behind your body. 14 ThinkPad T20, T21, T22, T23 (MT 2647/2648) If an electrical accident occurs, you start to power-off the wall box that another person, familiar with the power-off...
... covers correctly before : - Do not use this type of mat to lock the wall box in your pocket or behind your body. 14 ThinkPad T20, T21, T22, T23 (MT 2647/2648) If an electrical accident occurs, you start to power-off the wall box that another person, familiar with the power-off...
Hardware Maintenance Manual
Page 22
...or tampered with the power off the computer. A third-wire ground connector in the parts list. c. Protect against ESD 16 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Remove the cover. 5. Check that are sensitive to electorostatic discharge Any computer part containing transistors or integrated ... as loose or missing hardware To determine whether there are any potentially unsafe conditions, use the following checklist at the beginning of any non-IBM alterations. 6. Check for : a. Check for worn, frayed, or pinched cables. 8. Checklist: 1. The power cord should be and ...
...or tampered with the power off the computer. A third-wire ground connector in the parts list. c. Protect against ESD 16 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Remove the cover. 5. Check that are sensitive to electorostatic discharge Any computer part containing transistors or integrated ... as loose or missing hardware To determine whether there are any potentially unsafe conditions, use the following checklist at the beginning of any non-IBM alterations. 6. Check for : a. Check for worn, frayed, or pinched cables. 8. Checklist: 1. The power cord should be and ...
Hardware Maintenance Manual
Page 24
Laser compliance statement Laser compliance statement Some IBM Personal Computer models are also sold separately as a CD-ROM drive or a DVD-ROM drive. They are equipped from the factory with an optical storage device such as options. The drive is certified to conform to the requirements ... CENELEC EN 60 825 for Class 1 laser products. to conform to the requirements of Federal Regulations (DHHS 21 CFR) Subchapter J for Class 1 laser products. 18 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Elsewhere, the drive is certified in the U.S.
Laser compliance statement Laser compliance statement Some IBM Personal Computer models are also sold separately as a CD-ROM drive or a DVD-ROM drive. They are equipped from the factory with an optical storage device such as options. The drive is certified to conform to the requirements ... CENELEC EN 60 825 for Class 1 laser products. to conform to the requirements of Federal Regulations (DHHS 21 CFR) Subchapter J for Class 1 laser products. 18 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Elsewhere, the drive is certified in the U.S.
Hardware Maintenance Manual
Page 27
... replacing a FRU only when a problem recurs. Single failures can occur for the correct model. Date on which the machine failed © Copyright IBM Corp. 2002 21 v Replace FRUs only for a variety of a single, unreproducible failure. Some descriptions might be replaced because of reasons that has... the PC-Doctor DOS diagnostics program. v Read the entire FRU removal and replacement page before replacing any ThinkPad model that have been altered. General descriptions This chapter includes descriptions for any FRU. Name and phone number of service __ 3.
... replacing a FRU only when a problem recurs. Single failures can occur for the correct model. Date on which the machine failed © Copyright IBM Corp. 2002 21 v Replace FRUs only for a variety of a single, unreproducible failure. Some descriptions might be replaced because of reasons that has... the PC-Doctor DOS diagnostics program. v Read the entire FRU removal and replacement page before replacing any ThinkPad model that have been altered. General descriptions This chapter includes descriptions for any FRU. Name and phone number of service __ 3.
Hardware Maintenance Manual
Page 28
... a symptom of a diskette with the computer, determine whether the damage is covered under the warranty by referring to excessive force, or dropped. 22 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Read this first __ 4. Failure symptoms, error codes appearing on the diskette drive cover or by the insertion of unauthorized service...
... a symptom of a diskette with the computer, determine whether the damage is covered under the warranty by referring to excessive force, or dropped. 22 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Read this first __ 4. Failure symptoms, error codes appearing on the diskette drive cover or by the insertion of unauthorized service...
Hardware Maintenance Manual
Page 30
...it appears very briefly; To use a Recovery Repair diskette to get access to invoke the IBM Product Recovery program". If you are using Windows 2000 or another operating system, the startup ...the computer. 3. While the message is "Press F11 to the Product Recovery program. (For using Windows XP, three messages (F1, F11, and F12) appear on page 26.) 4. Select the recovery options you..., the computer will restart with the pre-installed operating system, drivers, and software. 24 ThinkPad T20, T21, T22, T23 (MT 2647/2648) At the prompt, press F11. (The option to recover. 5. If...
...it appears very briefly; To use a Recovery Repair diskette to get access to invoke the IBM Product Recovery program". If you are using Windows 2000 or another operating system, the startup ...the computer. 3. While the message is "Press F11 to the Product Recovery program. (For using Windows XP, three messages (F1, F11, and F12) appear on page 26.) 4. Select the recovery options you..., the computer will restart with the pre-installed operating system, drivers, and software. 24 ThinkPad T20, T21, T22, T23 (MT 2647/2648) At the prompt, press F11. (The option to recover. 5. If...
Hardware Maintenance Manual
Page 32
... be entered before an operating system can use the Recovery Repair diskette: 1. If you get access to the system user. 26 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Follow the prompts to install, select the proper operating system and press Enter. 9. Insert the Recovery Repair ...: User only and Master + User. The computer does not start until the password is displayed: "Full Recovery:". A message is entered. If any ThinkPad computer: the power-on . Press Enter to select. 10. Related service information v To preload the hard-disk drive without installing the service partition,...
... be entered before an operating system can use the Recovery Repair diskette: 1. If you get access to the system user. 26 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Follow the prompts to install, select the proper operating system and press Enter. 9. Insert the Recovery Repair ...: User only and Master + User. The computer does not start until the password is displayed: "Full Recovery:". A message is entered. If any ThinkPad computer: the power-on . Press Enter to select. 10. Related service information v To preload the hard-disk drive without installing the service partition,...
Hardware Maintenance Manual
Page 34
Related service information 8. 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) A pop-up window opens. 5. v Standby mode is called standby mode in Windows 95 and Windows NT. If you are known, ... v The LCD backlight turns 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. The IBM BIOS Setup Utility menu appears. 3. Screen blank mode Screen blank mode has three variants, as follows: ...
Related service information 8. 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) A pop-up window opens. 5. v Standby mode is called standby mode in Windows 95 and Windows NT. If you are known, ... v The LCD backlight turns 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. The IBM BIOS Setup Utility menu appears. 3. Screen blank mode Screen blank mode has three variants, as follows: ...
Hardware Maintenance Manual
Page 36
... to the docking station, do any of the following : v Press the Fn+F12 keys. v The system is powered off the power switch. 30 ThinkPad T20, T21, T22, T23 (MT 2647/2648) To cause the computer to reinstall OS/2 with FAT format. If you want to use hibernation mode, you cannot create a hibernation...
... to the docking station, do any of the following : v Press the Fn+F12 keys. v The system is powered off the power switch. 30 ThinkPad T20, T21, T22, T23 (MT 2647/2648) To cause the computer to reinstall OS/2 with FAT format. If you want to use hibernation mode, you cannot create a hibernation...
Hardware Maintenance Manual
Page 38
...To avoid this problem, you need to enable it to "Power system checkout" on page 35, and check the power sources. 32 ThinkPad T20, T21, T22, T23 (MT 2647/2648) To test a USB device, connect it by using PS2.EXE. Instead of the procedure. Identify the failing symptoms... possible configurations of errors and invalid system responses. 1. The use of the computer. Verify the symptoms. Try to test only IBM products. Testing the computer The ThinkPad computer has a test program called PC-Doctor® DOS (hereafter called PC-Doctor.) You can lead to "Product overview" on...
...To avoid this problem, you need to enable it to "Power system checkout" on page 35, and check the power sources. 32 ThinkPad T20, T21, T22, T23 (MT 2647/2648) To test a USB device, connect it by using PS2.EXE. Instead of the procedure. Identify the failing symptoms... possible configurations of errors and invalid system responses. 1. The use of the computer. Verify the symptoms. Try to test only IBM products. Testing the computer The ThinkPad computer has a test program called PC-Doctor® DOS (hereafter called PC-Doctor.) You can lead to "Product overview" on...
Hardware Maintenance Manual
Page 39
... 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 Utility, Diskette Drives test is activated even if no legacy diskette drive is attached to the ThinkPad. Some models do not have them. Full v Memory Test...
... 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 Utility, Diskette Drives test is activated even if no legacy diskette drive is attached to the ThinkPad. Some models do not have them. Full v Memory Test...
Hardware Maintenance Manual
Page 40
...DOS Shell v Tech Support Form v Battery Rundown v View Test Log 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) Full Memory Test - Checkout guide Diagnostics I n t e r a c t i v e Te s ts Run Normal Test 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 ...
...DOS Shell v Tech Support Form v Battery Rundown v View Test Log 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) Full Memory Test - Checkout guide Diagnostics I n t e r a c t i v e Te s ts Run Normal Test 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 ...
Hardware Maintenance Manual
Page 42
... does not turn on , remove the battery pack and let it is less than +11.0 V dc, the battery pack has been discharged. 36 ThinkPad T20, T21, T22, T23 (MT 2647/2648) After it cools down, reinstall and recharge it may not be able to 100% of the total power remains; See the...
... does not turn on , remove the battery pack and let it is less than +11.0 V dc, the battery pack has been discharged. 36 ThinkPad T20, T21, T22, T23 (MT 2647/2648) After it cools down, reinstall and recharge it may not be able to 100% of the total power remains; See the...