Chapter 3
Theory of Operation
P/N 57150002, Revision 5.0 3 - 15 Trimble S, VX, SPS & RTS Service Manual
F
Fig. 3-13 Servo side cover exploded
The cover includes a KNB board. The function of the KNB board is to read the movement of the servo
and focus knobs, also to detect the pressed button.
The knob is mounted to a bearing that is snapped into the cover. Two shims, sealing ring, distance
and a magnet completes the servo knob.
Fig. 3-14 Servo side cover
IPC board
KNB
board
Servo
side cover
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