IBM 2274 - Manual (Page 100)

66 IBM Desktop System HMM
Keyboard
001 - START
• Power off system unit and ensure the keyboard
plug is connected properly.
002 -
• 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.