Motor Replacement; Brake Timing Adjustment - Sony AV-3600 Service Manual

supply
reel table
pause brake
fever
take-up
reel table
Fig. 4- 16. Pause brake
lever
check
6.
Place the
Function Lever
in
all
the
modes
except
PAUSE. Check
for clearance
between
the
Pause
Brake
Lever and the Supply Reel
Table.
The
clearance should be
more
than
0.5
mm.
Brake
Timing Adjustment
1.
Set the Function Lever
to
STOP. Check
for a 2-
2.5
mm
clearance
between
the Capstan
Motor
Pulley
and
the Right
Rewind
Idler.
Bend
Take-
Up Cam
Push
Rod
A
with
a pair
of
pliers as
need-
ed
to obtain the correct spacing. See
Fig.
4-17.
2.
Move
the Function Lever from
REWIND
to
STOP
very slowly.
Check
that the
Take-Up Reel Table
braking
is
applied before the Right
Rewind
Idler
stops rotating.
3.
Move
the
Function Lever from
FAST
FORWARD
to
PAUSE
very
slowly.
Check
that
Supply Reel
Table braking
is
applied before the
Take-Up
Reel
Table
stops running.
4.
Thread
a
tape
on
the
VTR
and advance
it
until
all
the tape
is
on
the
Take-Up
Reel
Table.
Move
the
Function Lever from
REWIND
to
STOP. Check
that the tape stops
without
excess
slack. If
it
does not,
bend
the
Brake Lever with
a
pair of
pliers.
There should
still
be
at
least
0.5
mm
clearance
between
the
Brake Lever
and the
Takeup
Reel Table.
Place a
full reel
of tape
on
the
Supply Reel
Tafcle.
Move
the
Function Lever from
FAST
FORWARD
to
PAUSE.
Repeat
the procedure described
in
Step
4. If
necessary,
bend
the
Pause Brake Lever
with
a pair
of
pliers.
Refer
to
"Pause Brake Lever
Check" on
page 4-12.
4-13.
MOTOR REPLACEMENT
If
the
motor
is
suspected
to
be
defective, check
the
mechanical load on
the
motor
to
make
sure
that 'the
Capstan and Rotary
Head
Drum
Assembly turn
fr&ely.
Check
for
line
voltage
between
the black
and
\rfc»ite"
leads of the
motor
(set
the Function
Lever
to
FORWARD).
Also check phasing
capacitor COOi
in
4-13