System Maintenance 17-3
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.
îš„ Cleaning the trackball
(1) Disassembling the trackball
Press the bulges on the clamping ring by both hands and turn the ring about 45°
clockwise until it lifts. Take out the ring and the rotary ball. Be careful not to drop
the ball.
(2) Cleaning the trackball mechanism and rotary ball
There can be a considerable buildup of finger oils and dirt on the internal
trackball mechanisms. Use a cotton swab or soft dry cloth to clean the two long
shafts and rotary bearing and to remove any accumulation.
Use the soft dry cloth to clean the rotary ball.
(3) Installing the trackball
Put the rotary ball back in the trackball mechanism and align the clamping ring
with the top cover notches. Press the bulges on the ring with both hands and
turn the ring about 45° counterclockwise until the ring clicks and locks. As the
bulges are flush with the top cover, the ring is secured.
Top cover
Rotary ball
Clamping ring
Bearing
Long shaft
Long shaft
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