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Sanyo RD250 - Page 2

Sanyo RD250
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Head
replacement
and
azimuth
adjustment
’
After
replacing
the
head,
demagnetize
(clean)
it
with
head
cleanings
and
head
silencer.
Play
back
the
test
tape
for
azimuth
adjustment
(VTT-658,
10
kHz
for
instance),
and
turn
the
azimuth
adjusting
screw
with
Phillips
screwdriver
so
that
the
left
and
right
outputs
of
both
SIDE
1
and
SIDE
2
of
cassette
will
be
maximized.
Motor
replacement
and
speed
regulation
Play
back
the
test
tape
(MTT-111,
3
kH
for
instance),
and
turn
the
SVR
located
on
the
back
of
motor
with
blade
screwdriver
so
that
the
frequency
counter
will
indicate
3,000
Hz.
Mechanism
adjustment
*
Before
measurement,
clean
the
head,
capstan
and
pinch
roller.
Check
torque
and
tensions.
*
Measuring
Take-up
torque
Measurement
|
PLAY:
PLAY/F.FWD:
Drive
power
cassette
TW-2111
TW-2111
cassette
F.FWD/REW:
|
REW:
TW-2412
TW-2231
towque
gauge
PLAY
35~60
gr.cm
Greater
than
180
gr.
F.FWD
90~130
gr.cm
Back
tension
Tape
tension
Belt
replacement
1.
Flat
Belt,
Flywheel
141-2-561T-05271
2.
Square
Belt,
Idler
141-2-564T-23971

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