Automatic Shutoff Switch Adjustment - Sony AV-3600 Service Manual

the
clearance between
the
ends of the
slide
switches
on
V2, A, and SV,
circuit
boards
and
the
Slide
Switch
Springs E, F,
and
C
is
approximate-
ly
1
mm.
The
Slide
Switch Springs
are
wire
leaf-
type
springs.
Actuate and
release
the
RECORD
and
AUDIO
DUB
Buttons
a
few
times.
Check
that the
slide
switches operate
correctly.
4-15.
AUTOMATIC SHUTOFF SWITCH ADJUST-
MENT
To check the operation of the
Automatic
Shut-Off
Switch, turn
on the
power and
proceed
as follows.
1.
Remove
the tape
from
the
normal tape path. Set
3.
the Function Lever
first
to
FORWARD,
then
to
PAUSE, FAST FORWARD,
and
REWIND. The
motor should
shut off
in
each
position after
about
1
second.
Repeat
this
check with tape threaded
properly.
The
motor
should remain
on when
the
Function
Lever
is
set to
FORWARD,
PAUSE,
FAST FORWARD,
and
REWIND.
Set the Function Lever
to
STOP,
and depress
the
RECORD
button.
The motor
should
turn
on.
Thread
the tape on
the
VTR. Make
sure that the
motor
is
not shut
off
by
a slight
overshoot
of
the
tape sensing
wire.
If
the
aforementioned
condi-
tions are not met, proceed
to
the following
steps.
Set the
Function Lever
to
STOP. Check
for
ap-
proximately
5
mm
clearance
between
the tape
sur-
face
and
the sensing
wire.
ciearance
O.S
-^
1
mm
split
nut
Set lock bar
0.1** 0.3
mm
-~-
RECORD
button
-Tfflffi
W W
split
nut
t
clearance
_ 0.5
—
1
mm
£
iearance
0.5 ~~
1
mm
slide switch spring
slide
switch spring
(Stop
mode)
Fig.
4-19.
RECORD
button
latching
mechanism and
adjustment