NEC DIRECTION L Service Manual page 71

4-4 Maintenance and Troubleshooting
3. Turn the ball cover clockwise and remove the cover.
4. Turn the mouse over and remove the ball.
Clean the mouse as follows:
5.
T
Clean the mouse ball with tap water and a mild detergent, then dry it with a
lint-free cloth.
T
Remove any dust and lint from the mouse socket.
6. Replace the mouse ball in its socket.
7. Replace the ball cover and turn it counterclockwise until it locks in place.
Figure 4-1 Removing the Mouse Ball Cover