18
Replacing Belts
Rewind
Belt-Disconnect the two ends
of the worn belt, connect one of these
ends to an end of the new belt and pull
the new belt through.
If
the old belt
is not in position, feed the new belt
into the opening in front of the sup
ply reel arm. Guide the belt between
the flanges of the pulley until the end
protrudes from the opening in the top
of the housing.
If
the end of the belt
hits the housing, use a bent paper clip
to guide it. The belt should go
through the
BELT GUARD
(Figure 18).
FIGURE 18
BELT
GUARD
SCREW
SPACER
Take-Up Belt-Remove
the two upper
sprocket-plate retaining
SCREWS
and
the
SPACER
that is located behind the
retaining screw nearest the front of
the projector. Lift off the upper
sprocket and plate assembly. Remove
the old belt. Hold the new belt as
shown in Figure 19, and push the
looped end of the belt into the opening
in the mechanism. Make sure that the
STUD
is inside the loop. Continue to
push the belt downward until the
looped end is in the
GROOVE
next to the
sprocket drive gear. The belt should
be flat in the groove. With the belt in
this position, replace the upper
sprocket and plate assembly, pressing
it downward to engage the gears.
Then replace the retaining screws and
the spacer.
Drive Belts-These
belts seldom need
replacing.
If
replacement becomes
necessary, the new belts should be in
stalled by your serviceman.
GROOVE
STUD
FIGURE 19
Replacing Exciter
Lamp
The
EXCITER LAMP
(Figure 20) in
this projector operates at less than its
rated voltage. It should, therefore,
have extremely long life and should
seldom need to be replaced.
If the lamp must be replaced, dis
connect the power cord from the wall
outlet and swing the master control
cover outward as described on page
17. Push the exciter lamp
RELEASE
LEVER
down as far as it will go. Turn
the lamp counterclockwise and re
move it.
Place the new lamp in the socket
and turn it until the large ends of the
key slots in the lamp base fit over the
three locating studs. The lamp will fit
only one way. Turn the lamp clock
wise as far as it will go. To lock the
lamp in position, raise the exciter
lamp release lever. Wipe the glass of
the lamp with a clean soft cloth to
remove any fingerprints or smudges.
Replace the master control cover.
RELEASE
LEVER
FIGURE 20
EXCITER
LAMP
