Sony TCM-8EV - Page 12

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TCM-8EV
Record
Bias
Adjustment
Procedure:
1.
Mode:
record
record
portion
set
set
EXT
MIC
1)
1kHz
}
2)
6.
3kHz
llµV
(-
80d8)
earphone jack
Play back
the
tape
recorded
in
step
1.
blank tape
CS
-10
Adjust
the
VOLUME
control
so
that
VTVM read-
ing
is
0.25V
(-
I0dB
)
when
!kHz
is
played
back.
Next
play back
6.3kHz
and
check
that
the
level
difference
at
this
time
is
within
±3dB.
If
not,
connect
or
disconnect
patterns
" and
@
and
repeat
step
1
and
2.
Adjustment Location:
Audio B
oard
UR60i7
"LU.....J
f'I
Pattern connection
" @
"
@
6.
3kHz
VTVM
reading
down
t
up
Microphone Sensitivity Adjustment
Wh
en replacing
the
microphone,
perform
this adjust-
ment.
Mark
of
Microphone
Pattern Connection
BLACK
@
RED
~
Adjustment Location:
Audio B
oard
Cl
l8
<>-:pt-<>
eg
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12
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