Lenovo 9640, 9638, 9643, 9644, 9645, TC A55-9636 manual Non-opticalmouse

b.If there is some debris in the lens, gently blow the debris away from the area.

4.Check the surface on which you are using the mouse. If you have a very intricate picture or pattern beneath the mouse it may be difficult for the digital signal processor (DSP) to determine changes in the mouse position.

5.Reconnect the mouse cable to the computer.

6.Turn your computer back on.

Non-optical mouse

The non-optical mouse uses a ball to navigate the pointer. If the pointer on the screen does not move smoothly with the mouse, you might need to clean the mouse. Use the following procedure to clean the non-optical mouse:

Note: The following illustration might be slightly different from your mouse.

1 Retainer ring
2 Ball

3 Plastic rollers
4 Ball cage

To clean a mouse with a ball, follow the instructions below:

1.Turn off your computer.

2.Disconnect the mouse cable from the computer.

3.Turn the mouse upside down. Twist the retainer ring
1 to the unlocked position to remove the ball.

4.Place your hand over the retainer ring and ball
2, and then turn the mouse right-side up, so that the retainer ring and ball fall out into your hand.

5.Wash the ball in warm, soapy water then dry it with a clean cloth.

6.Blow air carefully into the ball cage
4 to dislodge dust and lint.

58User Guide