Technical information

Symptom Charts / USB and FireWire -

Troubleshooting

PowerBook (FireWire)

USB or FireWire

device, such as digital

camera, not

recognized by

computer

Note:

If you are trying to use a serial device with a USB/Serial

adapter, check with the manufacturer for compatibility.

1. Verify current driver for the device is installed.

2. Turn on camera before launching desktop video (DV)

application.

3. Try different USB

or FireWire

device on same port.

4. Eliminate chain by plugging in only one device.

5. Try the other USB

or FireWire

port.

6. Replace I/O logic board.

I/O devices are

unrecognized, or

garbage is

transmitted or

received

1. Check cables.

2. Check with vendor for current drivers.

3. Try other USB

or FireWire

port.

4. Reset PRAM.

5. Test device with known-good computer.

6. Replace I/O logic board.

Cursor does not move

when using trackpad

1. Shut down computer, unplug power adapter, and remove

battery. Let computer sit for one minute before restarting.

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

door).

3. Check trackpad connections.

4. Connect USB mouse and try to move cursor. If

trackpad does

not move cursor but external USB mouse does, replace

trackpad (included in top case).

5. Replace I/O logic board.