System Maintenance 16-3
NOTE: Be sure to use soft brush to brush the dust attached to all the sockets or
interfaces which can be seen (such as probe sockets, sockets or interfaces in
IO panel and power supply panel),not the cloth with water.
Cleaning the trackball
z Tools: paper, dry cloth, mild soapy water
z Method:
1. Disassembling the trackball:
Press the bulges on the clamping ring using both hands and turn the ring about 35°
clockwise until it lifts. Take out the ring and the rotary ball. Be careful not to drop the
ball. See the figure below.
2. Cleaning
Clean the two long shafts, the bearing and the rotary ball with a 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.
Turn the ring counterclockwise until the bulges are flush with the top cover and the
ring clicks and locks, meaning the ring is secured. See the figure below.
Clamping ring
Top cover
Rotary ball
Bearin
Long shaft
Long shaft