TM 5-6675-316-14
f. Move optical mount from upper limit to lower limit, and observe
chain movement.
If chain jumps sprockets, it is too loose. If
optical mount does not move smoothly, chain is too tight.
9.
Readjust, if necessary.
h. Mount stereoscope.
i.
Use Z-axis coarse feed knob to move optical mount up and down.
Observe movement.
CAUTION
Remove stereoscope before readjusting chain: weight of stereoscope may
cause mount to drop and damage viewi
j.
Remove stereoscope.
k. Readjust chain, if necessary
l.
Turn power on.
4-20.8 Replace Dimmer Circuit Card.
ng stages.
MOS: 41B, Topographic Instrument Repair Specialist
TOOLS :
5/32 in. Off Set Flat Tip Screwdriver
9/64 in. Flat Tip Screwdriver
SUPPLIES: Dimmer Circuit Card
Heat Sink Compound (Item 13, Appendix E)
4-68
