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Sharp VC-A30G Serviceanleitung Seite 23

Video-kassetten-recorder

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Verfügbare Sprachen

Verfügbare Sprachen

1. Remove the cassette housing control assembly.
2. Place the
mechanism
in the stop
mode
by
unplugging the power cord in the fast forward
or rewind mode.
3. Slowly rotate the torque gauge in the clockwise
(CW) direction and counterclockwise
(CCW)
direction of the supply brake so that the reel disk
and the indicator of the torque gauge rotate at
an equal rate. Check that the values are within
the range of CW direction = 280 to 720 g. cm,
CCW direction
=90 to 230 g.cm, and that the
brake torque in the CW direction is at least twice
as high as that in the CCW direction.
@ Checking the brake torque at the take-up side
disk
Adjust the idler
is
gear in the center.
7 Take-up reel
CCW: 280-720 g.cm
CW:
90-230 g.cm
Figure 1-44.
1. Remove the cassette housing control assembly.
2. Slowly rotate the torque gauge in the clockwise
(CW) direction and counterclockwise
(CCW)
direction of the take-up brake so that the reel
disk and the indicator of the torque gauge
rotate at an equal rate.
Check that the values
are within the range of CCW direction= 280 to
720 g. cm, CW direction =90 to 230 g.cm, and
that the brake torque in the CCW direction is at
least twice as high as that in the CW direction.
©@ Adjustment of the brake torque at the supply
side and the take-up side
. If the supply or take-up brake torque is outside
the range, clean the supply or take-up reel disk
break lever felt, then recheck the torque.
2. If the supply or take-up brake torque is still
outside the range, replace the main brake or the
main brake spring.
=
VC-A30G(BR) VC-A30S(BR)
VC-A30GM(BR) VC-A30SM(BR)
VC-A300M(BR) VC-A30SVIBR)
REPLACEMENT OF MAIN BRAKE
1. Remove the reel belt and the reel block FFC.
2. Remove the cut washer © off the brake shifter.
3. Unscrew the four screws @ and then the take-
up reel retainer.
4. Remove the reel block assembly @ downward.
5. Remove the cut washer © first and then the reel
pulley.
6. Unscrew the two screws @ and detach the idler
assembly.
7. Unhook the back tension lever spring © and
remove the back tension lever ©. (Undo the
hook under the reel chassis.)
8. Open the shifter latch @ and remove the brake
shifter assembly ©.
9. Release the reel disk catches
® and then remove
the left and right reel disk assemblies @ and @.
10. Finally remove the main brake levers @and the
main brake spring @.
Seas
Release
F
piri angie
| ~~
ass'y 9-7
ea
1
DD
Ss
i
4
ah
he
Back
)
yee
ce
~
|
wor COL
Y e
|
es
(12
.
Wt
spring
pT
' ey Qe®
Back
|. 7M
.
tension
Fe
I
lever
2
(Ooo
*
I
i o e
ian
ee
¢
é B®
if
73) Reel disk
S
~ catch:
|
'
CoP: o f
!
i
NA
Shifter
~Reel
,
latch
chassis
be
ant
Reel
;
ae
>
pulley
u t
washe
-/
Sect
# ee
eee
Reel block ass'y
Figure 1-45.
Note:
When the main brake is replaced, perform the
height checking and adjustment (see page 17), and
the brake torque checking (see page 22).
23

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