Keyboard - IBM PS/2 25 SX Hardware Maintenance Reference

6.0 Keyboard

Note: If a mouse or other pointing device is attached, remove it and see
if the error symptom goes away.
mouse or pointing device is defective.
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¦001¦
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- Power-off the system.
- Disconnect the keyboard cable from the keyboard.
- Power-on the system and check the keyboard cable connector for the
voltages shown. All voltages are ± 5%.
ARE THE VOLTAGES CORRECT?
Yes No
¦ ¦
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¦ ¦002¦
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¦ Possible failing FRUs are:
¦ 1. Keyboard cable
¦ 2. System board.
¦
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¦003¦
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Replace the keyboard.
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IBM PS/2 Model 25 SX HMR
Keyboard
If the symptom goes away, the
PICTURE 3
¦ Copyright IBM Corp. 1992
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