Sharp VC-90ET Service Manual page 12

VC-90ET
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Worm shaft ass'y
(1) Start sensor PWB
Figure 1-13.
1. Remove the start sensor PWB @ and worm
bracket @ from the cassette housing frame (R).
2. Remove the worm shaft assembly @).
3. Replace the cassette loading belt @ with a new
one.
Notes:
1. Do not overtighten the B tight screw which holds
the worm bracket in position. The specified
torque is 5.0 + 0.5kg-cm.
2. Make sure that the cassette loading belt is free
from grease. If stained with grease, clean the
belt with the cleaning liquid.
3. Perform checking of the clutch switch lever for
proper action.
CHECKING THE CLUTCH SWITCH LEVER
@ Checking
Place the mechanism in the cassette eject mode
when removing and attaching the cassette housing
from and to the mechanism chassis.
Make sure enough that each part in the cassette
housing such as the clutch switch lever is in
position. If not, it causes malfunction.
Note: ;
Figure 1-14 shows the position of each part in the
cassette eject mode.
Switch lever
Clutch
Worm shaft
lever
Rib of cassette Clutch lock fever
housing frame {R)
Rib
Drive gear
Figure 1-14.
Clutch release
12
1. First make sure that the tip of the switch lever is
held at the rib of the drive gear (R).
Clutch Coupling
Ge
Worm shaft ——— A
Clutch lever X Pulley
Figure 1-15.
@ Resetting
Take the following steps to reset the clutch if it is
unlocked or if the switch lever and the clutch lock
lever are unlocked.
mauenteves Clutch tock lever
Rib of cassette housing frame (R}
?
Driver gear (R)}
Figure 1-16.
1. Shift the slider by turning the coupling in the
arrow direction (clockwise) until the slider pin is
at the bottom of the slider groove as shown in
the Figure 1-16. (The loading mode)
Note: Note that the slider is equipped with a
lock mechanism. Unlock the locks on
cassette housing frames (L) and (R) side
before shifting the slider.
2. When the position is set as shown in the Figure 1-
16, push the clutch release lever in the direction
of the arrow by hand until the clutch lock lever
becomes tightly locked by the rib of cassette
housing frame (R).
3. Then turn the coupling counterclockwise until
the slider reaches the cassette insertion opening
and the reciprocating spring is activated.
Note: There is no need to unlock the slider when
shifting the slider to the cassette insertion
opening. Just keep shifting the slider.
Clutch release leve