Sharp VC-780E - Page 22

VC-790ET
REPLACEMENT OF THE CAPSTAN DD...
(DIRECT-DRIVE)
MOTOR.
ye
pr
Z:
Removal | Bg, tay
Remove the FFC © from. the capstan D. D. motor
control PWB @.
Remove the three screws @, and remove.the
capstan D.D. motor ® from the main chassis. -.
Reassembly
. Mount the capstan motor on the main chassis
while making sure not to allow the capstan shaft
to hit the main chassis, and attach it with: the
. three screws ©.
2. Insert the FFC @:into the esnean D.D.. motor
conor PWB @.
Notes:
1. After installing the capstan D.D. motor, be sure
to rotate the capstan motor and check os
movement. .
2.
Check and adjust the servo circuit.
amet ae a oa a a
@ Screw (2.6P +6S (S. Cup))
(XHPSD 26P06WSO)}
(2) Capstan D.D. motor
control PWB
Figure 1-30.
REMOVAL AND REASSEMBLY OF THE
LOADING GEAR BLOCK
15
2.
Removal
Remove the slow brake spring: ©, slow brake
lever @ and slow brake cap @ .
Take out the Ering © first and then the loading
relay gear @.
. Rotate the take-up loading gear @, take-up
loading arm assembly ©, supply loading gear ©
and supply loading arm assembly @ slightly in
the loading direction, and take them al! out.
. Finally remove the E ring © and relay gear drive
lever ©.
@ Reassembly
1
. Take the reverse steps of the removal.
2. In reassembling, match the tally marks onthe
gears, as shown in Fig. 1-31
Note:
1.
‘T) Slow brake cap
When reassembling, apply grease: te the
following points; al! the gear teeth, all the ‘gear
shafts, and the cam groove of loading relay gear
which the relay gear drive lever pin comes in. .
. Be careful not to deform the supply/take-up
loading arms.
. Be careful not to stain the felt of the slow brake.
. Be also careful to keep the outer surface of the
capstan D.D. motor © free from dust-and dirt. (If
stained;
the-MR
(Magnet=Resistor)
element
@
might be damaged.)
.
Reshape
the
anti-fall
hooks
of
the
slow
brake,
supply/take-up
loading
gears
as
required.
Avoid
reshaping
too
much.
Do
not
forget
to
place
the
slow
brake
cap
in
position.
@ Slow brake spring -
-@ Relay gear drive lever
@ Ering
(3) Loading relay gear
‘A Ering
@) Take-up
loading gear
lever
Tally marks
in a EY A
10 MR element © Take-up loading 3 suoply Joading
® 0.0. motor arm ass'y aire heey
Figure 1-31.
REMOVAL AND REASSEMBLY OF LOADING
BLOCK
1
2.
Removal
.
Remove
the
Jeads
and
the
cassette
roading
belt.
from
the
loading
block.
Unscrew
the
three
screws
@,
and
pull
a
and
remove
the
loading
block.
:
~
.. & Screw | eshte
. (2) Mastercam .
Tally marks [>
Loading motor
(1) Cam switch
Figure 1-32.