Hardware Maintenance Manual
Page 20
..., guards, labels, and ground wires. Safety information v After service, reinstall all power before returning the machine to lock the wall box in your pocket or behind your body. 14 ThinkPad T20, T21, T22, T23 (MT 2647/2648) If an electrical accident occurs, you may prevent a current from electrical shock. Attention: An electrical shock can...
..., guards, labels, and ground wires. Safety information v After service, reinstall all power before returning the machine to lock the wall box in your pocket or behind your body. 14 ThinkPad T20, T21, T22, T23 (MT 2647/2648) If an electrical accident occurs, you may prevent a current from electrical shock. Attention: An electrical shock can...
Hardware Maintenance Manual
Page 50
...: Data is being read from or written to the hard-disk drive, the diskette drive, or the drive in use light is on. Green: Caps Lock mode is enabled. Sudden physical shock could cause drive errors. Green: The numeric keypad on , do not put the computer into standby mode or turn... the Ultrabay 2000. To enable or disable the keypad, press and hold the Fn key while pressing the NumLk key. To enable or disable Caps Lock mode, press Fn + Caps Lock key. (continued) 44 ThinkPad T20, T21, T22, T23 (MT 2647/2648) When this indicator is on the keyboard is enabled.
...: Data is being read from or written to the hard-disk drive, the diskette drive, or the drive in use light is on. Green: Caps Lock mode is enabled. Sudden physical shock could cause drive errors. Green: The numeric keypad on , do not put the computer into standby mode or turn... the Ultrabay 2000. To enable or disable the keypad, press and hold the Fn key while pressing the NumLk key. To enable or disable Caps Lock mode, press Fn + Caps Lock key. (continued) 44 ThinkPad T20, T21, T22, T23 (MT 2647/2648) When this indicator is on the keyboard is enabled.
Hardware Maintenance Manual
Page 51
...standby mode or hibernation mode, or is low. Turn off . Note: If you can be attached or detached. To enable or disable Scroll Lock mode, press Fn + ScrLk key. Green: The computer is in standby mode. Blinking green: An Ultrabay 2000 device is in the process of... being charged. ThinkPad T20, T21, T22 and T23 series 45 Green: An Ultrabay 2000 device is being detached. Not all application programs support this function. This indicator does not blink...
...standby mode or hibernation mode, or is low. Turn off . Note: If you can be attached or detached. To enable or disable Scroll Lock mode, press Fn + ScrLk key. Green: The computer is in standby mode. Blinking green: An Ultrabay 2000 device is in the process of... being charged. ThinkPad T20, T21, T22 and T23 series 45 Green: An Ultrabay 2000 device is being detached. Not all application programs support this function. This indicator does not blink...
Hardware Maintenance Manual
Page 104
Rotate the head of the screw (A) to the direction of the arrow a to release the lock and then remove the CPU. 2 1 a b A c When installing: 1. Removing and replacing a FRU 1130 CPU For access, remove these FRUs, in the step c . 2. When attaching the CPU ... Fan assembly" on page 94 For T20, T21 and T22 series Rotate the the head of the screw (A) to the direction of the arrow b to lock the CPU. 98 ThinkPad T20, T21, T22, T23 (MT 2647/2648)
Rotate the head of the screw (A) to the direction of the arrow a to release the lock and then remove the CPU. 2 1 a b A c When installing: 1. Removing and replacing a FRU 1130 CPU For access, remove these FRUs, in the step c . 2. When attaching the CPU ... Fan assembly" on page 94 For T20, T21 and T22 series Rotate the the head of the screw (A) to the direction of the arrow b to lock the CPU. 98 ThinkPad T20, T21, T22, T23 (MT 2647/2648)
Hardware Maintenance Manual
Page 105
When removing or installing the CPU, confirm the shape of the CPU socket and do either steps 1 , 2 and a or steps 1' , 2 and a' . ThinkPad T20, T21, T22 and T23 series 99 Rotate the head of the screw to the direction of the arrow 1 or 1' to release the lock and then remove the CPU. 1 a 1' a' 2 When installing: Rotate the head of the screw to the direction of the arrow a or a' to model. For T23 series Removing and replacing a FRU Note: The shape of the CPU socket vary from model to lock the CPU.
When removing or installing the CPU, confirm the shape of the CPU socket and do either steps 1 , 2 and a or steps 1' , 2 and a' . ThinkPad T20, T21, T22 and T23 series 99 Rotate the head of the screw to the direction of the arrow 1 or 1' to release the lock and then remove the CPU. 1 a 1' a' 2 When installing: Rotate the head of the screw to the direction of the arrow a or a' to model. For T23 series Removing and replacing a FRU Note: The shape of the CPU socket vary from model to lock the CPU.
Hardware Maintenance Manual
Page 143
Release the front latches in the circle. 4 5 3 A ThinkPad T20, T21, T22 and T23 series 137 For step 5 , see the inside view, shown in step 3 , and then remove the top cover 4 . Removing and replacing a FRU Make sure that the system lock key A is set to the Unlock position.
Release the front latches in the circle. 4 5 3 A ThinkPad T20, T21, T22 and T23 series 137 For step 5 , see the inside view, shown in step 3 , and then remove the top cover 4 . Removing and replacing a FRU Make sure that the system lock key A is set to the Unlock position.
Hardware Maintenance Manual
Page 173
FRU P/N Screw kit (including nylon-coated screws) for T20, T21, T22 and T23 series: v M2.5 x 14 mm, bind head (15) v M2.5 x 11.5 mm, flat head (5) v M2.5 x 4.8 mm, flat head (20) v M2.5 x 3.5 mm, flat head (10) v M2.0 x 13.5 mm, pan head (15) v M2..0 x 4.0 mm, small head (10)... v Rubber foot, low height (2) v Rubber foot, high (1) v Sponge v Knob, battery lock v Latch, battery lock v Screw caps v Screw caps, rear 26P9285 (continued) ThinkPad T20, T21, T22 and T23 series 167 Miscellaneous parts Parts list Italicized letters in parentheses are reference to the exploded view on page...
FRU P/N Screw kit (including nylon-coated screws) for T20, T21, T22 and T23 series: v M2.5 x 14 mm, bind head (15) v M2.5 x 11.5 mm, flat head (5) v M2.5 x 4.8 mm, flat head (20) v M2.5 x 3.5 mm, flat head (10) v M2.0 x 13.5 mm, pan head (15) v M2..0 x 4.0 mm, small head (10)... v Rubber foot, low height (2) v Rubber foot, high (1) v Sponge v Knob, battery lock v Latch, battery lock v Screw caps v Screw caps, rear 26P9285 (continued) ThinkPad T20, T21, T22 and T23 series 167 Miscellaneous parts Parts list Italicized letters in parentheses are reference to the exploded view on page...