Technical information

Symptom Charts / USB and FireWire -

Troubleshooting

PowerBook (FireWire)

Cursor intermittently

does not move or

moves erratically

Note:

User must touch trackpad with the surface of only one finger

at a time and point directly down on the trackpad surface.

1. Clean trackpad surface with computer off, using a non-static-

inducing material.

2. Reset power manager (press the reset button behind the I/O

door).

3. Turn off clicking in Trackpad control panel.

4. Try unit on battery power. If problem goes away, replace

power adapter.

5. Check trackpad connections.

6. Replace trackpad (included in top case).

7. Replace I/O logic board.

No response to any

key on keyboard

1. Reset the power manager (press the reset button behind the I/

O door).

2. Check keyboard connection by disconnecting and reconnecting

keyboard cable.

3. Replace keyboard.

4. Replace I/O logic board.

Known-good Ethernet

network printer does

not print

1. Verify Chooser and networking control panel (AppleTalk and

TCP/IP) settings are correct.

2. Reinstall printer drivers.

3. Check printer cables.

4. Attach computer directly to printer using Ethernet crossover

cable, and retest.

5. Reset PRAM.

6. Replace I/O logic board.