Capstan Bearing And Shaft Replacement - Sony AV-3600 Service Manual

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If
not,
bend
the Section
"A"
of the sensing wire
with a
pair
of
pliers
or turn the
split
nut
at
"B"
shown
in Fig.
4-20.
5.
Set
the Function Lever
to the
REWIND
mode.
Check
that
the microswitch turns off before the
sensing wire
is
more than
3
mm
beyond
the tape
running surface. If
not, reposition the
micro-
switch as follows:
6.
Loosen
the
two
screws that secure the
micro-
switch to
the
mounting
bracket or the
two
screws
that fasten the
mounting
bracket
to
the
chassis.
Slide
the bracket or microswitch
to
obtain the
correct condiction. See Fig.
4-20.
7.
Make
sure that the microswitch turns off the
motor
correctly in
each
mode.
8.
Make
sure that the sensing wire operates
smooth-
ly
without touching the
Tape Guide or the Taper-
ed Guide.
4-16.
CAPSTAN BEARING
AND
SHAFT
RE-
PLACEMENT
A
worn
Capstan Bearing
results in
noisy opera-
tion (a squealing
sound from
the
capstan).
When
it
be-
comes
necessary to replace the
Capstan
Bearing, the
Capstan Shaft (assembly including the Flywheel)
must be replaced
as well.
Proceed
as follows.
1
.
Remove
the Reel Panel.
2.
Remove
the screw securing the
Capstan and pry
off the Capstan.
3.
Remove
the retaining
washer holding
the Pull
Rod
to
the Right
Rewind
Idler Shaft.
Remove
The
Pull
Rod
from
the
Idler Shaft.
4.
Remove
the
two
springs
from
the
Rewind
Idler
Push Rod.
5.
Remove
the four screws securing the
Capstan
Deck
Ass'y to the support
on
the
chassis.
Fig.
4-20.
Automatic shutoff switch adjustment