Apple Apple Computer Laptop POWERBOOK DUO FLOPPY ADAPTER User's Manual Page 57
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Troubleshooting Symptom Charts/Peripherals
(Continued)
- 29
Peripherals
(Continued)
Cursor intermittently
does not move or
moves erratically
1 Clean ball and rollers of trackball.
2 Replace trackball.
3 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.




