003 - DOES THE KEYBOARD FUNCTION CORRECTLY? (YES, READ AHEAD. NO, GO TO STEP 004.)

qKeyboard is functioning normally.

qEnd.

004 - ARE THERE ANY STUCK KEYS OR ANY GRIME IN THE GAP OF KEYCAPS? (YES, READ AHEAD. NO, GO TO STEP 005.)

qPower off the system unit. Carefully remove the grime and solve the stuck keys problem.

qGo to step 001.

005 - ARE THERE ANY BROKEN PINS IN THE KEYBOARD PLUG? (YES, GO TO STEP 007. NO,

READ AHEAD.)

qTry with a known good keyboard.

006 - DOES THE ERROR SYMPTOM STILL REMAIN? (YES, READ AHEAD. NO, GO TO STEP 007.)

qReplace the system board.

qEnd.

007 -

qReplace the keyboard.

qEnd.

q

Mouse

NOTE: A sticking key button can cause the mouse to operate incorrectly. If you suspect this, go to "Keyboard" on page 96.

001 - START

qMake sure that the mouse ball turns freely.

qMake sure that the mouse plug connects properly.

002 -

qPower off the system unit.

qInsert the diagnostics diskette into the diskette drive.

qPower on the system unit.

qSelect Interactive Tests menu, then execute Mouse test.

003 - DO YOU SEE THE MOUSE CURSOR IN THE DIAGNOSTICS PROGRAM? (YES, READ AHEAD. NO, GO TO STEP 011)

97

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Image 99
IBM 2169 manual 007, Mouse Start