Apple PowerBook 165 - Manual (Page 47)

Troubleshooting Symptom Charts/Peripherals - 23
Peripherals
After you connect
external SCSI device,
computer does not
boot
1 Switch on external SCSI device before starting computer.
2 Check cable connections.
3 Verify that standard Apple terminator terminates SCSI chain
at beginning and end.
4 Verify that SCSI select switch setting on external device is
unique.
5 Verify operation of internal hard drive.
6 Try known-good external SCSI device.
7 Replace motherboard.
Cursor does not move
when you are using
trackball
1 Restart computer.
2 Check cables.
3 Check interconnect board, daughterboard, and motherboard
connections.
4 Try low-power mouse. If cursor moves, replace trackball or
keyboard.