SOUTH
ET
‐
02/05
ELECTRONIC
THEODOLITE
SERVICE
MANUAL
6
SOUTH
SURVEY
&
MAPPING
INSTRUMENT
CO.,
LTD.
6
Step 5: Vertical absolute encoder disk unit (left
horizontal axis for short)
Refer to step 1 and 2, unload the
left
cover and angle
main board. Refer to the picture, remove the 4 dust-proof
setscrews on A points and 4 setscrews fixing CCD laser
tube on B points.
As shown in the picture, remove 4 setscrews of left
horizontal unit on C points and other 3 on D points. Pay
attention that rotating telescope to aim the screw holes of
the disk bracket to the 4 screws on C points. The screws on C are white ones with round head
The red dotted line circles indicate that there are 4 black
base setscrews with plate head under the disk. Do not
disassemble these 4 screws
when remove the left
horizontal axis unit
.
Pinch the two CCD brackets,
rotate outward to take off the whole left horizontal axis
unit. Take care of the absolute encoder disk for it made by
glass and easy to be damaged. The axis system connecting it with the telescope is also very precise. So the
disassemble procedure must be very careful under the safety situation. If the axis is hard to be removed,
please send it back to the factory. Do not enforce to take it out to avoid damaging axis or even blocking.
Save it properly after being removed.
C
D
A
B
