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Panasonic RS-736US - Page 4

Panasonic RS-736US
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MECHANICAL
PRESSURE
OF
PRESSURE
ROLLER
As
the
Pressure
Roller
is
pressed
against
the
Capstan,
the
Capstan
rotation
is
transmitted
to
the
Tape
between
Pressure
Roller
and
Capstan.
But
when
pressure
of
the
Pressure
Roller
against
the
Capstan
is
insufficient,
slip-
ping
occurs
and
the
Capstan
rotation
is
not
conveyed
smoothly.
Therefore,
this
pressure
should
always
be
kept
moderate.
Given
hereunder
are
the
measurement
and
adjustment
methods.
Measuring
Method:
Instruments
Required:
Spring
Scale,
Strong
Thread
1.
Thread
the
Tape
and
place
the
set
into
the
Playback
mode.
2.
Make
a
loop
of
the
thread
and
hook
the
Pressure
Roller
Shaft
to
the
Spring
Scale
with
it.
3.
Pull
the
Spring
Scale
slowly
along
the
straight
line
between
the
Pressure
Roller
Shaft
and
the
Capstan
2kg
Full
Scale,
Spring
Scale
NOTE:
Pull
it
along
the
extension
of
a-o
ADJUSTMENTS
Shaft,
and
read
the
value
on
the
Spring
Scale
when
the
Tape
stops
running
or
when
the
Pressure
Roller
moves
away
from
the
Capstan.
4.
The
standard
pressure
(value
on
the
Spring
Scale)
is:
(1.3~1.7
kg)
NOTE:
The
Capstan
and
the
Pressure
Roller
should
be
in
parallel.
If
they
are
not
in
parailel,
the
Tape
moves
up
and
down
between
the
Pressure
Roller
and
the
Capstan,
or
only
a
side
of
the
Tape
is
tensioned.
The
adjustment
is
made
by
correct-
ing
the
bent
Pressure
Roller
Shaft.
Adjusting
Method:
Make
the
adjustment
by
use
of
elongation
and
contrac-
tion
of
the
Pressure
Roller
Lever
Spring.
Measure
pressure
of
the
Pressure
Roller
and
check
if
it
satisfies
the
specified
value.
(Fig.
4)
Pressure
Roller
Fig.
4

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