Keyboard and Pointing Device

Keyboard and Pointing Device

NOTE: If a mouse or pointing device is attached, remove it to see if the error symptom goes away. If the symptom goes away, the mouse or pointing device is defective, replace the mouse or pointing device.


  Pin   Voltage (Vdc)
   1    +5.0 - Keyboard
           0 - Mouse
   2    Not Used
   3    Ground
   4    +5.0
   5    +5.0
   6    Not Used


If NO then replace the system board.

If YES then replace in the following order:

     Keyboard                             Mouse
  1. Keyboard Cable (if detachable)   1. Mouse
  2. Keyboard                         2. System Board
  3. System Board

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