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:
Remove the trackball:
With two fingers, grab the convex strip on the trackball pressure ring and turn it clockwise 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:
1 Keyboard cover 2 Trackball
3 Trackball pressure ring
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.
1 Bearing 2 Main shaft
3 Main shaft
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 counterclockwise 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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