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4-6.
EXTENSION
BOARD
The
Amp
chassis
printed
circuit
boards
listed
can
be
two
kinds
Extension
Boards.
the
Extension
Board
the
Amp
chassis
and
connect
the
circuit
board
to
be
serviced
to the
end
of
the
Extension
Board.
(NOTE)
Be
sure
to
turn
OFF
power
before
printed
circuit
serviced
by
using
of
Simply _ insert
into
inserting
or
removing
the
Extension
Board
or
boards.
Printed
circuit
board | Extension
Board
SV-88
DM-54
(TBC-5)
AU-83
AU-84
AU-85
BC-11
(TC-42)
EX-128
EX-127
4-7.
OPERATION
OF
THE
UNIT
WITHOUT
INSTALLING THE CASSETTE-UP
COMPARTMENT
AND
THE
CASSETTE
TAPE
The
unit
have
the
tape
beginning
and
tape
end
sensors
so
that
detect
the
tape
top
and
tape
end.
the
installing
the
Cassette-up
Compartment
the
cassette
tape,
disable
the
Tape
Beginning
Sensor
and
the
Tape
End
For
operating
unit
without
and
Sensor.
1. Remove
the Upper
Case.
(Refer
to Section
4-1)
2.
Short between TP10 (location
No. F-1) and E1 (A-3)
on
the
SY-102
Board
with
a shorting
clip
from
the entrance of the Time
Code
Board.
Tape
Beginning
Sensor
and
the
Tape
End
Sensor
stop
their
operation.
(NOTE)
Never
forget
to remove
the
shorting
clip
after
the
check
and
adjustment.
If
the
unit
is
placed
into
the
F
FWD
or
REW
mode _ without
the
unit
cannot
detect
the
tape
beginning
or
tape
end.
So
the
unit
cannot
operate
the
AUTO
STOP
removing
the
shorting
clip,
operation.
The
tape
and
the
unit
are
put
into
the
dangerous
situation.
3.
Set
the
Bit?
of S201
(location
No.
K-1)
on
the
SV-88
Board
to
ON
and
the
Bit8
to
OFF.
Set
S202
(M-1) on the SV-88
Board
to ON.
(NOTE)
After
the
check
and
adjustment,
reset
S201
and
S202.
4.
Turn
the
POWER
ON.
The
Threading
Ring
turns
automatically,
unit
is
put
into
the
threading
completion
mode.
0.
Press
the
button
as request.
4~8.
SPARE
PARTS
_ specified.
2.
Replacement
parts
supplied
from
the
Sony
Parts
Center
will
sometimes
have
a
shape
different
from
the
original
parts.
These
differences
are
for
improved
parts
and/or
engineering
changes
or standardization
of genuine
parts.
This
manual's
exploded
views
and
electrical
spare
list
of
the
standardized
genuine
parts
at
the
present
time.
parts
indicate
the
part
numbers
Regarding
engineering
part
changes'
in
our
engineering
department,
refer
to
Sony
service
bulletins
and
service
manual
supplements.
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