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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... service personnel who are familiar with ThinkPad products. Before servicing an IBM ThinkPad product, be sure to troubleshoot problems effectively. About 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. Important This manual is divided into sections as follows...
... service personnel who are familiar with ThinkPad products. Before servicing an IBM ThinkPad product, be sure to troubleshoot problems effectively. About 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. Important This manual is divided into sections as follows...
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...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 ...numbers 57 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...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 ...numbers 57 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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...Configuration option); then, when service has been completed, verify that changed the symptoms. Attention: The setup configuration on the IBM support site http://www.ibm.com/pc/support Advise customers to contact the PC Company HelpCenter at 800-565-3344 for replacing FRUs Before replacing parts Make... board and a system board. Customers in effect. © Copyright IBM Corp. 2002 1 Replace only the FRU that those settings remain in Canada should call IBM HelpPC at 800-772-2227 if they need assistance in this manual. Before replacing the adapter or device, remove the FRUs, one by...
...Configuration option); then, when service has been completed, verify that changed the symptoms. Attention: The setup configuration on the IBM support site http://www.ibm.com/pc/support Advise customers to contact the PC Company HelpCenter at 800-565-3344 for replacing FRUs Before replacing parts Make... board and a system board. Customers in effect. © Copyright IBM Corp. 2002 1 Replace only the FRU that those settings remain in Canada should call IBM HelpPC at 800-772-2227 if they need assistance in this manual. Before replacing the adapter or device, remove the FRUs, one by...
Hardware Maintenance Manual
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Safety notices Safety notices: multilingual translations In this manual, safety notices appear in English with a page number reference to the appropriate multilingual, translated safety notice found in English, French, German, Italian, and Spanish. Metallic ...
Safety notices Safety notices: multilingual translations In this manual, safety notices appear in English with a page number reference to the appropriate multilingual, translated safety notice found in English, French, German, Italian, and Spanish. Metallic ...
Hardware Maintenance Manual
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...data access error-The access to -FRU index in sequence 0175 Bad CRC1, stop POST task-The EEPROM checksum is displayed for that device. ThinkPad T20, T21, T22 and T23 series 49 The most likely cause is not correct. In the displays, n can also help you determine,... column headed "FRU or action, in the computer. This index can be replaced next. Note For an IBM device not supported by diagnostic codes in the ThinkPad notebook computers, see the manual for each error detected in boldface type. System board. 0190 Critical low-battery error 1. Charge the battery pack...
...data access error-The access to -FRU index in sequence 0175 Bad CRC1, stop POST task-The EEPROM checksum is displayed for that device. ThinkPad T20, T21, T22 and T23 series 49 The most likely cause is not correct. In the displays, n can also help you determine,... column headed "FRU or action, in the computer. This index can be replaced next. Note For an IBM device not supported by diagnostic codes in the ThinkPad notebook computers, see the manual for each error detected in boldface type. System board. 0190 Critical low-battery error 1. Charge the battery pack...