Technics ST-G470 Service Manual

e Adjustment points.
SEPARATION
ADJUSTMENT
FM
SIGNAL
GENERATOR
CONDITION
1.Test equipment connection is shown in figure. Modulation... serene isch Sl ines oli FM STEREO FM DET FM DET
aoe ene aha troquency display and signal generator to -»- MOdulation frequency .........1kHz(Pilot 19kH2z) SEPARATION FMMPX Coil Coll
ig
10MHz,.
‘
ere
pone
Output
level...
es
66dB
ADJ.
VCO.
AD.
(100.1MHz)
:
Z
4.Adjust VR301 so that the R-CH output is minimized when
stereo modulator is in “L”(L-CH modulation) mode.
a oO FM
abe
STEREO
DISTORTION
ADJ.
LPF (fc = TSkH2~ 19kHz}
FM STEREO DISTORTION ADJUSTMENT
FM STRENGTH
LEVEL ADJ.
1.Test equipment connection is shown in figure. FM SIGNAL GENERATOR CONDITION
2.Set
the
unit
to
"FM”
mode.
Modulation
«0...
eeeeenees
“L”mode
or
“R”mode
90%,
3.Set
the
radio
frequency
display
and
signal
generator
to
Pilot
10%
100.10MHz.
Modulation
frequency
........
IkHz(Pilot
19kHz)
4. Adjust
L1 so
that
the
distortion
factor
of
L-CH is
Output
level... eee
66dB
minimized.
§.Make sure that the distortion factors of L-CH and R-CH
are nearly the same and minimum.
Note: The adjusting screwdriver used should be made of
resin.
in
§, OO00D00
FM
SIGNAL
STRENGTH
LEVEL
ADJUSTMENT
FM
SIGNAL
GENERATOR
CONDITION
9
1.Test
equipment
connection
is
shown
in
figure.
Goi,
Yisauenc
Sea
pata
rie
2.
Set
the
unit
to
“FM”
mode.
Sineuliaval
aa
cee
fean
3.
Set
the
radio
frequency
display
and
signal
generator
to
DUE
tie
setepreebcoacertanrtaie
100.10 MHz.
4.
Change
FL
display
from
“frequency”
to
“dB”
by
pressing
the
FM
signal
button.
5.
Adjust
VR101
so
that
54dB
Is
indicated.
‘54dB"
is
=)
aoe
a
7E
indicated
on
the
FL
display.
ouesee
Out
p
ER
ig
o00
Ke¥-
FM
ANT
7)
1
1 8
6. Repeat steps 4, 5.
ae)

Technics ST-G470 Specifications

General

Brand	Technics
Model	ST-G470
Category	Tuner
Language	English