Appendix B. Cleaning the mouseThis appendix provides instructions on how to clean your mouse. The procedurewill be different depending on which type of mouse you have.Cleaning an optical mouseIf you experience some problems with your optical mouse, check the following:1. Turn the mouse over and look carefully at the lens area.a. If there is a smudge on the lens, gently clean the area with a plain cottonswab or plain q-tip.b. If there is some debris in the lens, gently blow the debris away from thearea.2. Check the surface you are using the mouse on. If you have a very intricatepicture or pattern beneath the mouse it is difficult for the digital signalprocessor (DSP) to determine changes in the mouse position.Cleaning a mouse with a ballIf the pointer on the screen does not move smoothly with the mouse, you mightneed to clean the mouse.Note: The following illustration might be slightly different from your mouse.1 Retainer ring2 Ball3 Plastic rollers4 Ball cageTo clean a mouse with a ball:1. Turn off your computer.2. Turn the mouse over, with the top side down, and look carefully at the bottom.Twist the retainer ring1to the unlocked position to remove the ball.© Copyright IBM Corp. 2004 83