19 System Maintenance
Operator’s Manual 19 - 3
Press the bulges on the clamping ring by both hands and turn the ring about 45° anticlockwise
until it lifts. Take out the ring and the rotary ball. Be careful not to drop the ball. As shown in
figure below.
2. Cleaning
Clean the two long shafts, the bearing, the plastic cover, the internal of the ring and the rotary
ball with clean soft dry cloth or paper.
3. Installing the trackball
Put the rotary ball back in the trackball mechanism and put the clamping ring back in (with the
bulge direction of 15 ° deviated from the horizontal line), turn the ring clockwise until the
bulges are flush with the top cover, and the ring clicks and locks, which means the ring is
secured. See figure below.
1. Keyboard cover
2. Trackball
3. Clamp ring
1. Long shaft
2. Bearing
3. Long shaft
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