Publicidad
ells
MILITARY MARKET
KDZ AND PSDG-BRANCHES
es
Sis
30.4.1995
— re/pr
SUBJECT
TEXT
DOLBY
FREQUENCY
Symptom
CHARACTERISTIC
When
recorded
and
played
in metal
tape
position,
the
frequency
characteristic
worsens.
WORSENING
(Lowered
3 -
5 dB
in medium
frequency
range)
only with
Dolby
IN.
RS-BL1W
Bias
leak voltage
is applied
to the
Dolby
circuit
causing
faulty
operation
of the
circuit.
*
Bias
leak
is
significant
in metal
position
because
of
high bias
oscillation
voltage.
The above-mentioned
symptom
appears
when
bias
leak
of
LINE
OUT
is
about
1.7 mV.
Remedy
Improvement
of lead
wire
arrangement
Bias
leak
increases
as the parallel
cable
from
INPUT
VR comes
close
to
the
rec/playback
head
connector
of
main
P.C.B.
Publicidad
