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Sony TC-FX600 - Page 4

Sony TC-FX600
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TC-FX600
CAUTION
ON
REPAIRING
AND
SHUT-OFF
DETECTION
This
set
performs
the
shut-off
detection
optically.
There
are
five
grooves
on
each
reel
table,
the
lamp
light
being
transmitted
with
light
guide
on
the
back
of
the
ornamental
plate
is
to
the
phototransistor
intermittently
by
the
rotation
of
reel
table.
Phototransistors
Q802,
803
produce
pulse
waves
by
intermittent
lights,
which
is
input
to
mechanism
controller
of
IC501
and
the
AMS
counter
of
[C502
after
shaped
at
IC507.
Therefore,
when
it
is
neces-
sary
to
repair
by
removing
the
ornamental
plate,
set
the
oscillator
temporarily
to
the
each
input
ter-
minal
of
IC507
(input
pattern
on
MD
board
or
terminal
5,
6
of
CNP510
on
the
system
control
board)
not
to
operate
the
auto
shut-off.
lamp
take-up
reel
spindle
table
ornamental
plate
groove
AF
ose
(102
—
9
ka
system
control
board
ation

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