ThinkPad T22 Manual - Lenovo T21

ThinkPad T22 Manual

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T20, T21, T22, T23 - Hardware Maintenance Manual (April 2002)


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)
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T20, T21, T22, T23 - Hardware Maintenance Manual (April 2002)


Page 3
... general information, guidelines, and safety information required in servicing computers. 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. About this manual This manual contains service and reference information for trained service personnel who are familiar with...
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T20, T21, T22, T23 - Hardware Maintenance Manual (April 2002)


Page 5
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 translations 3 Safety information 13 General ... 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 41 Specifications 43 Status indicators 45 FRU Tests 47 Fn key combinations 48 Symptom-to-FRU index 49...
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T20, T21, T22, T23 - Hardware Maintenance Manual (April 2002)


Page 55
...Note: Do the FRU replacement or other actions in the sequence shown in the column headed "FRU or action, in the ThinkPad notebook computers, see the manual for each error detected in POST or system operation. In the displays, n can also help you determine, during regular servicing... first, in the computer. System board. 0188 Invalid RFID serialization information area or bad CRC2-The EEPROM checksum is not correct. ThinkPad T20, T21, T22 and T23 series 49 System board. 0189 Invalid RFID configuration information area-The EEPROM checksum is not correct. Battery pack. Numeric error...

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We have the following 7 documents available for the Lenovo ThinkPad T21:
  • T20, T21, T22, T23 - Hardware Maintenance Manual (April 2002)
  • English - 46L4325 - ThinkPad T20, T21User's Reference guide
  • (English) Access Connections Profile Deployment guide
  • (English) Deployment Guide for IBM Access Connections
  • Microsoft Windows XP Conversion Kit
  • Setup Guide for T20, T21, T22
  • EasyServe Repair Inventory Sheet
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