Meade LX200 Classic Service Manual page 8

Procedures for removal and installation of printed circuit board and motor assemblies

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1. Align the RA motor assembly with the two threaded mounting holes. Note that some

motor assemblies have a step in the base of the mount which requires a special

mounting plate. We recommend you smear some grease on the base and mounting

plate to hold them together while installing the motor assembly.

2. Compress the spring-loaded hinge and align the teeth of the worm wheel with the

worm gear.

3. Loosely thread in the left mounting screw, line up the right mounting hole, thread in

the right screw.

4. Semi-tighten the left screw. While tightening the right screw, push up on the bottom

of the motor base to level the assembly.

5. Firmly tighten the left and right mounting screws.

6. Make sure the spring is in place in the motor assembly. The tension screw should be

adjusted to allow for 1/16" of movement when moving the drive motor. The spring

tension movement allows the motor to compensate for high and low spots in the

worm gear drive. There should be enough movement so the worm gear doesn't

disengage or bind over its full travel.

7. Plug the 7 pin connector on the drive cable into the PCB.

R.A. Motor Assembly Installation