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Troubleshooting Symptom Charts/Peripherals (Continued) - 31
Peripherals (Continued)
No response to any
key on keyboard
1 Press <Power On> key or power button.
2 Adjust Battery Conservation setting in PowerBook Control
Panel.
3 Check keyboard cable connection.
4 If you are using floppy adapter and external keyboard,
replace keyboard cable.
5 Replace floppy adapter.
6 Replace keyboard.
7 Replace logic board.
Note: When replacing the logic board, check that the EMI clips
are securely attached to the CPU stiffener. The “CPU Stiffener”
topic in Take Apart helps you locate and identify the two EMI clips.
If both clips are not secure, replace the CPU stiffener.