Lenovo ThinkCentre 7522 User Manual page 70

To clean the non-optical mouse, do the following:
Note: The following illustration might be slightly different from your mouse.
10. Reinstall the ball and the retainer ring. Twist the retainer ring to the locked
11. Reconnect the mouse cable to the computer.
12. Turn your computer back on.
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User Guide
1 Retainer ring
2 Ball
3 Plastic rollers
4 Ball cage
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 reveal the ball.
4. Place your hand over the retainer ring and ball 2 , and then turn the mouse
bottom-side down, 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.
7. Look for a buildup of dirt on the plastic rollers 3 inside the ball cage. This
buildup usually appears as a stripe running across the middle of the rollers.
8. If the rollers are dirty, clean them by using a cotton swab soaked in isopropyl
(rubbing) alcohol. Turn the rollers with your finger and continue swabbing
them until all the dirt is removed. Be sure the rollers are still centered in their
channels after you clean them.
9. Remove any fibers from the swab that might be remaining on the rollers.
position.