Sharp VC-90ET - Page 29

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6.
Reassembly
. Place the relay gear drive lever in the unloading
state.
. Place the relay shifter so that it is in contact with
the reverse guide spring hole in the mechanism
chassis. Release the slow brake lever with a
finger to bring it away from the capstan (in the
direction of arrow). Then place the master cam
50 that the D cut-off part of the master cam faces
the direction of arrow.
. Place the half loading recipro lever’s cam
follower so that it fits in the master cam‘s
circumferential cam groove (marked with
arrow), attach the E ring, then mount the half-
loading recipro lever.
. Turn the master cam somewhat clockwise until
the pinch roller lever’s cam follower goes into
the master cam’s groove (marked with arrow).
Mount the pinch roller level and then attach the
E ring.
. Rotate the master cam by hand to make sure all
the four levers (relay gear drive lever, half
loading recipro lever, pinch roller lever, and relay
shifter lever) are in the cam grooves in place.
Mount the loading block. (See page 27.)
Notes :
1.
2.
Be careful not to scratch the teeth and grooves
of the master cam.
After installation of the master cam, be sure to
rotate the master cam by hand before installing
the loading block. If the levers are in wrong
position, the master cam and the levers may get
damaged when the motor stares.
. Apply specified grease to the master cam’s
grooves and teeth.
REPLACEMENT OF DRUM ASSEMBLY
= 6
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Removal
. Remove the head amp. PWB from the video
head relay board.
. Remove the bottom board (Ref. No @ in the
Cabinet Parts Diagram).
. Remove the D.D. drum motor connector (ME).
. Loosen the Drum-base mounting screws © and
remove the drum ass‘y from the mechanism
chassis.
. Loosen the Earth brush ass‘y mounting screw @
and remove the Earth brush ass‘y @.
. Loosen the two D.D. motor rotor mounting
screws ® and remove the D.D. motor rotor ©.
. Loosen the three D.D. motor stator mounting
screws © and remove the stator @.
. Remove the two video head relay board
mounting screws ®.
. Loosen the three drum ass’y mounting screws
© and remove the drum ass‘y from the Drum-
base.
Earth brush assy
VC-90ET
a3
\ Video head relay board
*
Drum ass'y
>
—_—— By
LSS
CEO
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‘ D.D. motor stator
Note:
Secure the D.D. rotor assembly so that the
installation positioning holes in the D.D. ro-
tor assembly and lower drum match.
Figure 1-75.
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