(14) Make sure that the retaining frame is firmly seated in the
projection stage and that it is centered between the four
holes used in mounting the plate glass cover.
(15) Turn the projection stage over.
(16) Reinstall the mounting clips, screws, and lockwashers (re-
moved in (3) above); loosely attach the assembled parts
with their associated nuts.
(17) Gently insert the plate glass cover under the four loose
(18) Being careful not to crack or chip the plate glass cover, hold
the nuts under the projection stage with the fingers of we
hand and tighten each of the screws in the mounting clips
with a screwdriver.
(19) Place the projection stage on the housing; align the holes
on the rear of the projection stage with the holes on the rear
of the housing.
(20) Insert the projection-stage retaining screws through the
holes in the projection stage until they engage the threaded
bushings on the housing.
(21) Handtighten the projection-stage retaining screws to hold
the projection stage firmly in place.
c. Reflector. Open the rear door of the projector (fig. 7.1). Re-
move the upper left retaining screw from the reflector mounting plate.
Carefully hold the reflector with one hand and unscrew the lower
right retaining screw. Lift the reflector mounting plate out of the
housing. The reflector is not removable from the reflector mounting
plate because the reflector retaining clips are riveted to the reflector
mounting plate. To reassemble the reflector mounting plate, perfom
the above procedure in reverse order.
Note. Whenever the Reflector mounting plate has been removed and rein-
stalled, the reflector must be realinged (par. 59c ) .
d. Glass Condenser (fig. 32.2).
(1) Raise the projection stage all the way.
(2) Support the glass condenser lens with one hand and, with the
other hand, use a screwdriver to remove the four screws on
the retaining plate.
(3) Gently lift out the glass condenser lens and the retaining
Note. The glass condenser lens has a frosted spot in the center of the
convex side to promote better light distribution.
(4) Carefully separate the glass condenser lens from the retaining