Hardware Maintenance Manual
Page 3
... 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. Use this manual This manual contains service and reference information for trained service personnel who are...
... 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. Use this manual This manual contains service and reference information for trained service personnel who are...
Hardware Maintenance Manual
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Contents About this manual iii Introduction 1 Important service information 1 Strategy for replacing FRUs 1 How to use error messages 2 Diskette compatibility matrix 2 Safety notices: multilingual... 23 Service web site 23 Restoring the preloaded system 23 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...Removing and replacing a FRU 59 1010 Battery pack 60 1020 Backup battery 61 © Copyright IBM Corp. 2002 v
Contents About this manual iii Introduction 1 Important service information 1 Strategy for replacing FRUs 1 How to use error messages 2 Diskette compatibility matrix 2 Safety notices: multilingual... 23 Service web site 23 Restoring the preloaded system 23 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...Removing and replacing a FRU 59 1010 Battery pack 60 1020 Backup battery 61 © Copyright IBM Corp. 2002 v
Hardware Maintenance Manual
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...change. Customers in obtaining or installing any FRUs listed in effect. © Copyright IBM Corp. 2002 1 Running Automatic Configuration may have both a processor board and a system board. Introduction Important service information Important BIOS and device driver fixes are instructed to replace a FRU but ... FRUs Before replacing parts Make sure that all diskette fixes are installed before you are servicing may alter the settings. Replace only the FRU that those settings remain in this manual. v If an adapter or device consists of them does not correct the problem, ...
...change. Customers in obtaining or installing any FRUs listed in effect. © Copyright IBM Corp. 2002 1 Running Automatic Configuration may have both a processor board and a system board. Introduction Important service information Important BIOS and device driver fixes are instructed to replace a FRU but ... FRUs Before replacing parts Make sure that all diskette fixes are installed before you are servicing may alter the settings. Replace only the FRU that those settings remain in this manual. v If an adapter or device consists of them does not correct the problem, ...
Hardware Maintenance Manual
Page 55
... an IBM device not supported by diagnostic codes in the computer. Battery pack. If replacing a FRU does not solve the problem, put the original part back in the ThinkPad notebook computers, see the manual for each...checksum is not correct. Charge the battery pack. 2. A numeric error is not correct. ThinkPad T20, T21, T22 and T23 series 49 Symptom-to-FRU index Symptom-to-FRU index The symptom-to be any number....failed. In the displays, n can also help you determine, during regular servicing, what FRUs are likely to need to -FRU index in this section lists symptoms and errors and...
... an IBM device not supported by diagnostic codes in the computer. Battery pack. If replacing a FRU does not solve the problem, put the original part back in the ThinkPad notebook computers, see the manual for each...checksum is not correct. Charge the battery pack. 2. A numeric error is not correct. ThinkPad T20, T21, T22 and T23 series 49 Symptom-to-FRU index Symptom-to-FRU index The symptom-to be any number....failed. In the displays, n can also help you determine, during regular servicing, what FRUs are likely to need to -FRU index in this section lists symptoms and errors and...