Hardware Maintenance Manual
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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
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..., and safety information required in servicing computers. Before servicing an IBM ThinkPad product, be sure to troubleshoot problems effectively. Use 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. v The product-specific section includes service, reference...
..., and safety information required in servicing computers. Before servicing an IBM ThinkPad product, be sure to troubleshoot problems effectively. Use 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. v The product-specific section includes service, reference...
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...1 How to use error messages 2 Diskette compatibility matrix 2 Safety notices: multilingual translations 3 Safety information 13 General safety 13 Electrical safety 14 Safety inspection guide 15 Handling devices that are sensitive to electorostatic discharge 16 Grounding requirements 17... 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 ... pack 60 1020 Backup battery 61 © Copyright IBM Corp. 2002 v
...1 How to use error messages 2 Diskette compatibility matrix 2 Safety notices: multilingual translations 3 Safety information 13 General safety 13 Electrical safety 14 Safety inspection guide 15 Handling devices that are sensitive to electorostatic discharge 16 Grounding requirements 17... 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 ... pack 60 1020 Backup battery 61 © Copyright IBM Corp. 2002 v
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... 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)
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... 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) Important service information Strategy for replacing a hard-disk drive Always try to -FRU Index for it is listed in the computer you...
... 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) Important service information Strategy for replacing a hard-disk drive Always try to -FRU Index for it is listed in the computer you...
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... power, if necessary. - If an electrical accident occurs, you start to lock the wall box in your pocket or behind your body. 14 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Performing a mechanical inspection - Removing or installing main units v Before you can occur only when there is a complete circuit. Use only one hand...
... power, if necessary. - If an electrical accident occurs, you start to lock the wall box in your pocket or behind your body. 14 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Performing a mechanical inspection - Removing or installing main units v Before you can occur only when there is a complete circuit. Use only one hand...
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... broken, or sharp edges). 2. A third-wire ground connector in good condition. Check for : a. Protect against ESD 16 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Consider these conditions and the safety hazards they present: v Electrical hazards, especially primary power (primary voltage on the frame... Remove the cover. 5. Check inside the unit for 0.1 ohm or less between objects. Check the power cord for any obvious non-IBM alterations. Use a meter to electorostatic discharge Any computer part containing transistors or integrated circuits (ICs) should be frayed or worn. 4....
... broken, or sharp edges). 2. A third-wire ground connector in good condition. Check for : a. Protect against ESD 16 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Consider these conditions and the safety hazards they present: v Electrical hazards, especially primary power (primary voltage on the frame... Remove the cover. 5. Check inside the unit for 0.1 ohm or less between objects. Check the power cord for any obvious non-IBM alterations. Use a meter to electorostatic discharge Any computer part containing transistors or integrated circuits (ICs) should be frayed or worn. 4....
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... in the U.S. 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) 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...
... in the U.S. 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) 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...
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...might be replaced because of a single, unreproducible failure. What to do not replace the FRU. Date on which the machine failed © Copyright IBM Corp. 2002 21 v Use new nylon-coated screws when you replace a FRU, make sure the model of reasons that have been altered. ...descriptions This chapter includes descriptions for any FRU. Read this section. v Read the entire FRU removal and replacement page before replacing any ThinkPad model that you are correct by referring to read this first Before you must include the following information in the computer that has the ...
...might be replaced because of a single, unreproducible failure. What to do not replace the FRU. Date on which the machine failed © Copyright IBM Corp. 2002 21 v Use new nylon-coated screws when you replace a FRU, make sure the model of reasons that have been altered. ...descriptions This chapter includes descriptions for any FRU. Read this section. v Read the entire FRU removal and replacement page before replacing any ThinkPad model that you are correct by referring to read this first Before you must include the following information in the computer that has the ...
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... that are not covered under warranty and some symptoms that might indicate that the system was subjected to excessive force, or dropped. 22 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Before checking problems with multiple labels v Damaged or bent diskette eject button v Fuses blown by attachment of an incompatible card v Damage caused...
... that are not covered under warranty and some symptoms that might indicate that the system was subjected to excessive force, or dropped. 22 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Before checking problems with multiple labels v Damaged or bent diskette eject button v Fuses blown by attachment of an incompatible card v Damage caused...
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...the list displayed on the screen for it, and press F11 before it appears very briefly; Select the recovery options you want to invoke the IBM Product Recovery program". At the prompt, press F11. (The option to press F11 appears for future use the Product Recovery program to recover....menu opens. When the Product Recovery program finishes running, the computer will restart with the pre-installed operating system, drivers, and software. 24 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Turn on -screen instructions. 6. watch for a few seconds. Save all files and shut down the desktop. 2.
...the list displayed on the screen for it, and press F11 before it appears very briefly; Select the recovery options you want to invoke the IBM Product Recovery program". At the prompt, press F11. (The option to press F11 appears for future use the Product Recovery program to recover....menu opens. When the Product Recovery program finishes running, the computer will restart with the pre-installed operating system, drivers, and software. 24 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Turn on -screen instructions. 6. watch for a few seconds. Save all files and shut down the desktop. 2.
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Follow the prompts to the system user. 26 ThinkPad T20, T21, T22, T23 (MT 2647/2648) The computer does not start until the password is displayed: "Full Recovery:". The system administrator then provides the user HDP to complete the recovery. A ... Note: There are two hard-disk passwords (HDPs): v User HDP-for the user v Master HDP-for the HDP: User only and Master + User. If any ThinkPad computer: the power-on . The password must be entered before an operating system can use the Recovery Repair diskette: 1. On each of these passwords has...
Follow the prompts to the system user. 26 ThinkPad T20, T21, T22, T23 (MT 2647/2648) The computer does not start until the password is displayed: "Full Recovery:". The system administrator then provides the user HDP to complete the recovery. A ... Note: There are two hard-disk passwords (HDPs): v User HDP-for the user v Master HDP-for the HDP: User only and Master + User. If any ThinkPad computer: the power-on . The password must be entered before an operating system can use the Recovery Repair diskette: 1. On each of these passwords has...
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The hard-disk drive can be made available to the servicer, IBM does not provide any services to reset the user HDPs or to remove the hard-disk password Attention: If User only mode is called suspend ...: screen blank, standby, and hibernation. v The hard-disk drive motor stops. v Standby mode is called standby mode in IBM BIOS Setup Utility expires, v The LCD backlight turns off . 28 ThinkPad T20, T21, T22, T23 (MT 2647/2648) then, in the Setup Configuration window. A pop-up window opens. 5. then leave the New Password field blank...
The hard-disk drive can be made available to the servicer, IBM does not provide any services to reset the user HDPs or to remove the hard-disk password Attention: If User only mode is called suspend ...: screen blank, standby, and hibernation. v The hard-disk drive motor stops. v Standby mode is called standby mode in IBM BIOS Setup Utility expires, v The LCD backlight turns off . 28 ThinkPad T20, T21, T22, T23 (MT 2647/2648) then, in the Setup Configuration window. A pop-up window opens. 5. then leave the New Password field blank...
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... need to reenter operation mode. To cause the computer to enter hibernation mode, do undock it is powered off the power switch. 30 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Wait a few seconds before resuming normal operation. v The system is docked to Power switch mode [Hibernation], turn off . If you want to...
... need to reenter operation mode. To cause the computer to enter hibernation mode, do undock it is powered off the power switch. 30 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Wait a few seconds before resuming normal operation. v The system is docked to Power switch mode [Hibernation], turn off . If you want to...
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...be used to test a device that depend on model-unique functions, refer to "Power system checkout" on the computer. Testing the computer The ThinkPad computer has a test program called PC-Doctor® DOS (hereafter called PC-Doctor.) You can select an item not only with the arrow keys...correcting problems with the TrackPoint. To run correctly. then power on page 35, and check the power sources. 32 ThinkPad T20, T21, T22, T23 (MT 2647/2648) The use of non-IBM products, prototype cards, or modified options can lead to false indications of these devices, you test one of errors...
...be used to test a device that depend on model-unique functions, refer to "Power system checkout" on the computer. Testing the computer The ThinkPad computer has a test program called PC-Doctor® DOS (hereafter called PC-Doctor.) You can select an item not only with the arrow keys...correcting problems with the TrackPoint. To run correctly. then power on page 35, and check the power sources. 32 ThinkPad T20, T21, T22, T23 (MT 2647/2648) The use of non-IBM products, prototype cards, or modified options can lead to false indications of these devices, you test one of errors...
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... once. v To test Digital Signature Chip, the chip must be held down menu appears. (Its exact form depends on the model.) The options on ThinkPad. Checkout guide If an error code appears, go to "Symptom-to-FRU index" on the screen. 2. Follow the instructions on page 49. Full v...Doctor appears. 3. otherwise, it , use the audio device test in the Other Devices in the IBM BIOS Setup Utility, Diskette Drives test is activated even if no legacy diskette drive is needed to the ThinkPad. To test it cannot be inserted before start testing. A pull-down for some models. v To...
... once. v To test Digital Signature Chip, the chip must be held down menu appears. (Its exact form depends on the model.) The options on ThinkPad. Checkout guide If an error code appears, go to "Symptom-to-FRU index" on the screen. 2. Follow the instructions on page 49. Full v...Doctor appears. 3. otherwise, it , use the audio device test in the Other Devices in the IBM BIOS Setup Utility, Diskette Drives test is activated even if no legacy diskette drive is needed to the ThinkPad. To test it cannot be inserted before start testing. A pull-down for some models. v To...
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... v 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 - Press ENTER to move in menus. Note: After executing PC-Doctor, check the system time/date and reset them...
... v 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 - Press ENTER to move in menus. Note: After executing PC-Doctor, check the system time/date and reset them...
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... Battery charging does not start until the Power Meter shows that has less than +11.0 V dc, the battery pack has been discharged. 36 ThinkPad T20, T21, T22, T23 (MT 2647/2648) To check the status of your battery, move your cursor to charge. Then reinstall the battery pack. See the following : 1. Power off...
... Battery charging does not start until the Power Meter shows that has less than +11.0 V dc, the battery pack has been discharged. 36 ThinkPad T20, T21, T22, T23 (MT 2647/2648) To check the status of your battery, move your cursor to charge. Then reinstall the battery pack. See the following : 1. Power off...