System Maintenance 17-3
the system performance. When the cursor control is not flexible, it may be caused by dust pollution
inside the trackball. In this case, remove the trackball and clean the dust inside.
Tools: paper tissue, dry soft cloth, and mild soapsuds
Method:
1. Remove the trackball:
With two fingers, grab the convex strip on the trackball pressure ring and turn it
counterclockwise for about 45 degrees. When the pressure ring rises with the rotation, take
out the pressure ring and the ball (be careful that dropping the ball may cause damage to the
ball). See the figure below:
2. Cleaning:
Use a clean soft cloth or dry paper tissue to clean the two main shafts inside the trackball,
bearings, plastic housing, and inner part of the pressure ring, as shown below. Meanwhile,
clean the ball.
3. Re-installing:
Put the ball in. Then, put the pressure ring in (the convex strip on the pressure ring is about 15
degrees from the horizontal), and rotate clockwise until the convex strip on the pressure ring is
horizontal. Then, the buckle is locked. At this time, the pressure ring can no longer be rotated,
indicating that the pressure ring has been installed in place. See the figure below.
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