Mindray DP-3300 - Page 78

Overview
a
）
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.
b
）
Cleaning the trackball
Clean the two long shafts, the bearing and the rotary ball with clean soft dry cloth or
paper.
Long shaft
Bearing
Long shaft
c
）
Installing the trackball
Put the rotary ball back in the trackball and then align the clamping ring click with the
top cover notch. Press the bulges on the ring with both hands and turn the ring about
45° counterclockwise until the ring clicks. As the bulges are flush with the top cover,
the ring is secured.
6-2 DP-3300/DP-3200 Service Manual（V1.1）
Top cover
Rotary ball
Clamping ring