IBM 2140 Personal Computer User Manual


 
Keyboard
001
A failing mouse can show up as a keyboard failure.
Power-off the system unit.
(Type 2140) Disconnect the mouse from the system unit.
(Type 2142) Disconnect the mouse from the Media Console.
Power-on the system unit.
DID THE SYMPTOM REMAIN?
Yes No
002
Replace the failing mouse.
003
Power-off the system unit and wait 10 seconds.
Reinstall the mouse.
Ensure the keyboard cable is fully inserted into the system unit (Type
2140) or Media Console (Type 2142).
Remove any foreign objects that might interfere with the mechanical
operation of the keybuttons.
Power-on the system unit.
DID YOU RECEIVE A 3XX OR A 5803 POST ERROR?
Yes No
004
Go to Step 008 on page 2-40.
005
For (Type 2140), go to Step 008 on page 2-40.
For (Type 2142):
Power-off the system unit and wait 10 seconds.
Disconnect the keyboard cable and the mouse cable from the Media
Console.
Connect the keyboard cable and mouse cable to the system board at
the rear of the tower.
Power-on the system unit.
(Step 005 continues)
Check Procedures 2-39