Dokorder 7700 - Page 12

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the solenoid
plunger
@
will be from
1
to 1.5
mm
(0.04
-
0.06
inch).
g.
Note
After the
stroke has
been adjusted,
paint-lock
the two lock screws
@.
4 3 STROKE OF BRAKE LINKAGE
STOPPER
a.
Specification
1
mm
(0.04
inch)
space
between the rubber
damper
@
and the brake linkage@.
b. Adjustment
Adjust
the set
position
of
the brake
linkage stoppers
@
c.
Reference
Refer to
Fig.
5-8 or
section 2 on
page
M-16.
d. Special
Tools
and/or lnstruments
required
A thickness
gauge.
e. Preparation
Remove the front
panel
(including pinch
roller
and
head cover).
F
ix the
auto
shut-off arm
ON by a
piece
of
sticking
tape.
f. Procedure
(1)
Push
the
play
and
stop
buttons alternately
and
check that the
brake linkage
e
moves up
and
down
properly.
(2)
Push
the
play
button once again.
loosen
the
two lock r.ru*r
@
and
adjust the
position
of the
brake
linkage
guides
so that
the space
between
the
rubber damper
@
and the
brake linkage
O
.uU be 1 mm
(0.04
in ch
)
.
g.
Note
After the adjustment
has been completed,
paint-lock
the
two
lock
screws
@.
44
BRAKE TOROUE
a. Specification
b.
Adjustment
c. Reference
600
-
800
S
(1.8
-
2.4
kg. cm)
Adjust
the
brake linkage
stoppers@.
Refer to
Fig.
5-5 on
page
7.
d. Special
Tools and/or lnstruments
required
A
spring
balance
(1
kg) and
7-inch small-hub
reel
(6
cm in
diSmeter).
e.
Preparation
Remove the
f
ront
panel
(including
pinch
roller
and
head cover).
Fix
the
auto shut-off
arm ON
by a
piece
of
sticking tape.
{.
Procedure
(1)
Mount the
7-inch reel on the
left turntable
with a
piece
of string to
it, as shown
in
Fig.
5 5
(A).
(2)
Push
the
stop button,
hook a
spring balance to the
string attached
above
reel,
pull
the
balance
gently
in
the
direction indicated
by the
arrow in Fig. 5 5
(A),
and read the
pressure
indicated
by the balance
when
the
left
turntable
begins
to turn.
{3)
The
reading
(brake
torque)
on the spring balance
should
indicate
pressure
from 600 to 800
g
as
a brake
torque
(1
.8
-
2.4 kg.
cm).
(4)
Repeat the steps
(2)
and
(3)
for the right turntable.
lf
you
discover a considerable
difference between the
brake torques
for
the
left and
right turntable,
refer
to
adjustment
chart.
When
Torque is
Greater than
800
grams
Refer
to
Fig.
5-8
in 4-3
"STROKE
OF
BRAKE
LINKAGE
STOPPERl'and set
the
distance
between the rubber
damper
@
and the
brake
linkage
@
to
less than
1
mm
(0.04
inch).
Less
than
600
grams
Refer
to
Fig. 5-8 in
4-3
"STROKE
OF
BRAKE
LINKAGE
STOPPER" and set
the
distance
between
the
rubber damper
@
and the
brake linkaqe
C
to
more
than
1 mm
(0.04
inch).
Brake
Solenoid
F is.5
8
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