Mouse - IBM 2193 Maintenance Service Manual

Insert the diagnostics diskette into the diskette drive and
power on the system unit.
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.

Mouse

NOTE: A sticking key button can cause the mouse to operate
incorrectly. If you suspect this, go to "Keyboard" on
page 92.
001 - START
Make sure that the mouse ball turns freely.
Make sure that the mouse plug connects properly.
002 -
Power off the system unit.
92