Hardware Maintenance Manual
Page 5
...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 Laser compliance statement 18 General descriptions 21 Read...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... 60 1020 Backup battery 61 © Copyright IBM Corp. 2002 v
...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 Laser compliance statement 18 General descriptions 21 Read...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... 60 1020 Backup battery 61 © Copyright IBM Corp. 2002 v
Hardware Maintenance Manual
Page 21
... and fans - Switch off . v Never assume that it has been powered off power. - such touching can cause personal injury and machine damage. Motor generators and similar units. (This practice ensures correct grounding of non-IBM features or options not covered by this inspection guide is conductive; v Do...protect users and service personnel from grounds such as metal floor strips and machine frames. As each machine was designed and built, required safety items were installed to get medical aid. This guide addresses only those items. You should use good judgment to identify ...
... and fans - Switch off . v Never assume that it has been powered off power. - such touching can cause personal injury and machine damage. Motor generators and similar units. (This practice ensures correct grounding of non-IBM features or options not covered by this inspection guide is conductive; v Do...protect users and service personnel from grounds such as metal floor strips and machine frames. As each machine was designed and built, required safety items were installed to get medical aid. This guide addresses only those items. You should use good judgment to identify ...
Hardware Maintenance Manual
Page 32
...to complete the recovery. On each of these passwords has been set, a prompt for it appears on . If any ThinkPad computer: the power-on the computer. 3. The Master + User mode requires two HDPs; If you get access to select. 10. The computer does not start until the password is displayed: "Full... password must be entered before an operating system can use the Recovery Repair diskette: 1. Follow the prompts to the system user. 26 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Press Enter to the hard disk even if the user has changed the user HDP Note: There are two hard-disk passwords...
...to complete the recovery. On each of these passwords has been set, a prompt for it appears on . If any ThinkPad computer: the power-on the computer. 3. The Master + User mode requires two HDPs; If you get access to select. 10. The computer does not start until the password is displayed: "Full... password must be entered before an operating system can use the Recovery Repair diskette: 1. Follow the prompts to the system user. 26 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Press Enter to the hard disk even if the user has changed the user HDP Note: There are two hard-disk passwords...