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Sony TC-K333ESG - Page 12

Sony TC-K333ESG
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TC-K333ESG/K950ES
|
Bias
OSC
Frequency
Adjustment
Procedure
:
1.
Record
mode
blank
tape
~
erase
fr
head
equency
counter
—s|
inductor
Ge
1.
Connect
the
frequency
counter
to
the
inductor
which
functions
at
10
mH.
(When
the
inductor
is
a
closed
magnetic
circuit,
redesign
the
inductor
to
be
anopenmagnetic
circuit.
2.
Remove
the
cassette
lid,
insert
the
cassette,
and
put
the
unit
into
REC
mode.
3.
Move
the
inductor
from
the
side
in
close
to
the
erase
head
to
check
the
value
of
the
bias.
4,
Adjust
CP501
so
that
the
reading
on
the
frequency
counter
is
105kHz
+
1kHz.
CrO.
Bias
and
Record
Level
Adjustment
Note:
This
adjustment
should
be
made
before
Record
Bias
Adjustment.
Setting:
REC
LEVEL
knob:
standard
record
position
(See
page
10.)
HX
PRO
switch:
ON
Procedure:
1.
Mode:
simultaneous
REC/PB
LINE
IN
315Hz,
25mV
(-30dB)
lel
10kHz,
25mV
(-30dB)
—22*s!9nal
tape
CO
|
attenuator
CS-122
rey
11,000
74
oscilloscope
LINE
OUT
2.
Adjust
RV105
(L-CH)
and
RV205
(R-CH)
so
that
the
playback
output
level
of
10kHz
signal
is
0.8dB
to
0.3dB
with
respect
to
that
of
315Hz.
¢
¢
«Record
Bias
Adjustment.
3.
Adjust
RV102
(L-CH)
and
RV202
(R-CH)
so
that
the
playback
output
level
of
315Hz
is
-25.3dB
to
-24,7dB.
>
+
«Record
Level
Adjustment.
Metal
Bias
Adjustment
Setting
:
REC
LEVEL
Knob:
standard
record
position
(See
page
10.)
Procedure
:
1.
Mode:
simultaneous
REC/PB
315H2z,
25mV(
—30d8)
AF
OSE
10kHz,
2SmV(—30d8)
=
no~signal
tape
a)
10kQ
LINE
INPUT
CS-
413
fe)
attenuator
pk
etlakel
ale
o—=
tt,
O00
LINE
OUTPUT
2.
Only
when
the
level
difference
of
10kHz
play
back
output
between
L~ch
and
R-ch
is
1dB
or
more
short
or
open
EQ-tap
for
TYPE-IV
(on
the
conductor
side
of
REC
board).
3.
Adjust
RV510
so
that
the
playback
output
level
of
10kHz
in
R-CH
is
0.5dB
to
-0.5dB
with
respect
to
that
of
315Hz.
Normal
Bias
Adjustment
Setting:
REC
LEVEL
knob:
standard
record
position
(See
page
10.)
Procedure:
1.
Mode:
simultaneous
REC/PB
LINE
IN
10
kHz,
25
mV
(—30
d&)
AF
OSC
315
Hz,
25
mV
(-30
dB)
no-signal
tape
)
a
CS-
122
O|
attenuator
omen
|
000%
[
SS
|
LINE
OUT
2.
Only
when
the
level
difference
of
10kHz
play
back
output
between
L~ch
and
R~-ch
is
1dB
or
more
short
or
open
EQ@-tap
for
TYPE-I
(on
the
conductor
side
of
REC
board).
3.
Adjust
RV509
so
that
the
output
level
of
10kHz
is
0.5dB
to
-0.5dB
with
respect
to
that
of
315Hz.
a
ae

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