Brake Torque Adjustment; Take-Up Brake Lever Check; Pause Brake Lever Check - Sony AV-3600 Service Manual

b.
The Supply
Reel pays out and
slackens tape
when
going
from
FORWARD
or
FAST
FORWARD
to
STOP.
c.
The Take-Up
Reel
exerts
too
much
back
tension
during
Rewind.
d
The Take-Up
Reel pays out too
much
tape
when
going
from
REWIND
to
STOP.
e.
The Supply
Reel
rotates
during Pause operation.
Brake
Torque Adjustment
1
.
Set the
Function
Lever to
STOP.
2.
Place
an
empty
reel
(RH-7V)
with
several
turns of
string
wrapped around
the
hub
onto the
Supply
Reel
Table
as
shown
in Fig. 4-14. Tie the
reel
to
the spring scale.
Pull the
scale at
a speed of ap-
proximately
4
inches/ sec.
Check
the reading for
brake torque.
It
should
be more than 800
g-cm.
3.
Repeat the above brake-torque checks
for (S)
,
©
and
@
as
indicated in Fig.
4-14.
The
brake
torques should be
less
than
400
g-cm for the
di-
rection
of
(§)
and
©
and
more
than
800g-cm
for
the direction of
®
.
4.
Bend Spring Supporting Brackets
(T)
and
(2)
with
a pair of
pliers, if
necessary, to
obtain the
correct
brake torques.
5.
Set the Function Lever
to
PAUSE.
6.
Repeat
the
procedure
described in Step 2
for the
direction indicated
by
(g) in Fig.
4-14.
It
should
be
more
than
800
g-cm.
7. If
necessary,
bend
the portion of the Pause Brake
Lever
identified
by
(5)
with
a pair
of
pliers.
Take-Up Brake Lever Check
1
.
Set the
Function Lever
to
STOP.
2.
Check
that the
top end
of the
Brake Lever
is
dis-
engaged from
the
Function
Selector
Cam
by
ap-
proximately
2
mm.
Refer
to
Fig.
4-15
(a).
3.
Set the Function Lever
to
REWIND.
4.
Check
for a clearance of approximately 2
mm
be-
tween
the
Brake Lever and
the
Take-Up
Reel
Table.
5. If
necessary,
bend
the portion of the
Brake Lever
identified
by
"A"
with
a pair of
pliers.
Pause
Brake
Lever
Check
1.
Set the Function Lever
to
REWIND.
2.
Check
for a clearance of
approximately
1
mm
be-
tween
the Pause
Brake Lever and
the
Supply Feel
Table.
3. If this
condition does not
exist,
turn nut
"A"
shown
in Fig.
4-16.
4.
Advance
the tape.
Check
that the tape stops run-
ning
in the
PAUSE
mode.
5.
In the
PAUSE
mode, check
for play
between
the Brake Lever and
the nut.
1
1
(&)
\
n^
2
mm
\
\/y\
!
v/
\
*&
I
X/
\
\
/
\
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//
\
\
Is
A
\
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>r
ft
J
(a)
STOP
mode
(b)
REWIND
mode
Rig.
4-15. Take-up brake
lever
check
4-12