HTS-420R Maintenance Manual
16
10. EDM Laser Replacement
Remove both top and bottom cover of telescope, and then take off the laser cable from EDM board.
Loosen the fixing screws of the laser and take the laser out. Put the brand new laser into the support tube
and adjust its front end to be aligned with that of the support tube. Place the laser cable horizontally to the
left side then tighten the fixing screws. Finally, connect the laser cable to the EDM board and install the
covers.
11. Filter Motor Replacement
Take off the motor cable from the EDM board and unscrew the fixing screw, as shown in the pictures below,
then take the motor out. Set the new motor to be in place and tighten the screw (make sure the filter has
no contact with the edge of the gap). Finally, connect the motor cable.
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