Keyboard - IBM PS/2 N51 SX Hardware Maintenance Service

6.0 Keyboard

If the system has no response when the numeric keypad is used:
1. Disconnect the numeric keypad from the system.
2. Repeat the failing operation.
If the problem does not appear, replace the numeric keypad.
the problem still remains, replace the keyboard control card.
If that does not correct the problem, replace the system board.
Make sure that the two flexible cables extending from the keyboard are
properly attached to the connectors on the keyboard control card.
If you suspect a problem with any of the auxiliary input devices,
replace the device.
keyboard control card.
the system board.
If the system has an incorrect keyboard response, replace the
keyboard, then replace the keyboard control card.
correct the problem, replace the system board.
Note: The following auxiliary input devices are available for Model N51
SX.
- Numeric keypad
- Mouse.
IBM PS/2 Model N51 SX HMS
Keyboard
If that does not correct the problem, replace the
If this does not correct the problem, replace
¦ Copyright IBM Corp. 1991
6.0 - 1
If
If that does not