TroubleshootingSymptom Charts/Peripherals (Continued) - 29

Peripherals (Continued)

Cursor intermittently

1

Clean ball and rollers of trackball.

does not move or

2

Replace trackball.

moves erratically

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.

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Apple 250, DUO 280C, DUO 27C, 230, POWERBOOK DUO FLOPPY ADAPTER manual TroubleshootingSymptom Charts/Peripherals