K PowerBook 140/145/ 145B/170 - Apple Collection

Troubleshooting Symptom Charts/Peripherals (Continued) - 21
Peripherals (Continued)
Cursor moves, but
clicking trackball
button has no effect
Cursor does not move
when using mouse
1 Check interconnect board, daughterboard, and motherboard
connections.
2 Replace trackball.
3 Replace keyboard.
4 Replace interconnect board.
5 Replace daughterboard.
6 Replace motherboard.
1 Check mouse connection to ADB port.
2 Press reset switch.
3 Clean mouse ball and inside mouse.
4 Replace mouse.
5 Replace motherboard.