Keyboard (6565/6868/6878)


Keyboard (6565/6868/6878)

Note: If a mouse or other 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.

 +---+
 |001|
 +---+
  - Power-off the computer.
  - Disconnect the keyboard cable from the system unit.
  - Power-on the computer and check the keyboard cable connector on
    the system unit for the voltages shown. All voltages are  5%.
    +-----+--------------+
    | Pin | Voltage (Vdc)|
    +-----+--------------+
    |  1  | +5.0         |
    |  2  | Not Used     |
    |  3  | Ground       |
    |  4  | +5.0         |
    |  5  | +5.0         |
    |  6  | Not Used     |
    +-----+--------------+
 ARE THE VOLTAGES CORRECT?
            +---+
  Yes    No |002| Replace the system board.
   |        +---+
   |
 +---+
 |003| On keyboards with a detachable cable, replace the cable.
 +---+ If the problem remains or if the cable is permanently
       attached to the keyboard, replace the keyboard. If the
       problem remains, replace the system board.


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