Apple PowerBook - Page 44

USB and FireWire
PowerBook (FireWire)
22
Troubleshooting
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 that 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.