Apple Performa 6400/180 - Manual (Page 89)

Troubleshooting Symptom Charts/Peripheral - 15
Peripheral
Cursor does not move 1 Restart system.
2 Check mouse connection.
3 If mouse was connected to keyboard, connect mouse to rear
ADB port and disconnect keyboard. If mouse works, replace
keyboard.
4 If mouse does not work in ADB port, replace mouse.
5 Reseat logic board.
6 Replace logic board. Retain customer’s DIMMs.
Cursor moves, but
when you click the
mouse, nothing
happens
1 Replace mouse.
2 Reseat logic board.
3 Replace logic board. Retain customer’s DIMMs.