Microswitch Maintenance And Adjustment - Sony AV-3600 Service Manual

8.
Test
the Pinch Roller to
see that
it
spins freely.
Pinch Roller Pressure
Adjustment
1.
Set
the Function Lever
to
FORWARD.
Check
for
0.1
mm
clearance
between
the
lower end
of the
Pinch Roller
and the Capstan Shaft
when
the
upper
end
of the
Pinch
Roller contacts the
Capstan Shaft.
See
Fig.
4-24.
Bend "A"
in
Fig.
4-2
1
with
a pair of
pliers as
needed
to
obtain
the
correct spacing.
t
__
=3
|V''\:'..'.'.".';V'-Ci
h'"
'
t^
i
——.
1
-
o
_
J
0.1
mm
Fig.
4-24.
Pinch
roller
adjustment
2.
Place the
Function
Lever
in
the
FORWARD
po-
sition.
Make
a
loop
in
a piece of
string
and
attach
the spring
scale
around
the base of the Pinch
Roller
Shaft.
See
Fig.
4-24. Pull the
scale in the
direction indicated
by
the arrow.
Check
the read-
ing
when
the Pinch
Roller
just leaves the
Capstan
Shaft.
It
should be between
1.5
and
2.2 kg.
4-19.
MICROSWITCH MAINTENANCE
AND
AD-
JUSTMENT
1.
Set the
Function Lever
to the
STOP
mode.
Make
sure that the switching button of the micro-
switch
(SW
4,
under
the
chassis,
beneath t
Function Lever)
is
in
the center of the Cam. See
Fig.
4-25.
Note,
the
microswitch
(SW
4) turns off
with the
pushbutton
pressed.
2.
If it
does not operate
normally, loosen the
mount-
ing
screw and
readjust the position
of the Micro-
switch
Assembly
within the
slot
of the Micro-
switch
Mounting
Bracket After adjustment, apply
a suitable locking
compound
to the
mounting
screw.
3.
Coat
the
Cam
contacting
surface
with
grease.
Fig.
4-25. Microswitch adjustment
4-20