IBM 2283, Hardware Maintenance Service

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Check Procedures 69
Keyboard
001 - START
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Power off system unit and ensure the keyboard or
receiver plug is connected properly.
002 -
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Power on the system unit.
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Run the Diagnostics program located in service
partition.
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Select Interactive Tests menu, then execute
Keyboard test.
003 - DOES THE KEYBOARD FUNCTION
CORRECTLY? (YES, READ AHEAD. NO, GO TO
STEP 004.)
•
Keyboard is functioning normally.
•
End.
004 - ARE THERE ANY STUCK KEYS OR ANY
GRIME IN THE GAP OF KEYCAPS? (YES, READ
AHEAD. NO, GO TO STEP 005.)
•
Power off the system unit. Carefully remove the
grime and solve the stuck keys problem.
•
Go to step 001.
005 - ARE THERE ANY BROKEN PINS IN THE
KEYBOARD PLUG? (YES, GO TO STEP 007. NO,
READ AHEAD.)
•
Try with a known good keyboard.
006 - DOES THE ERROR SYMPTOM STILL
REMAIN? (YES, READ AHEAD. NO, GO TO STEP
007.)
•
Replace the system board.
•
End.
007 -
•
Replace the keyboard.
•
End.