Read Sony CDX-4483ESP Service Manual online
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FM RF signal
generator
0.01
µ
F
antenna
terminal
terminal
set
LINE OUT REAR
10 k
Ω
level meter
FM Stereo Separation Adjustment
Setting :
D-BASS switch : OFF
SOURCE button : FM
SOURCE button : FM
Carrier frequency : 98.00 MHz
Output level
Output level
: 70 dB (3.2 mV)
Mode
: stereo
Modulation
: main : 1 kHz, 20 kHz deviation (26.5%)
sub : 1 kHz, 20 kHz deviation (26.5%)
19 kHz pilot : 7.5 kHz deviation (10%)
19 kHz pilot : 7.5 kHz deviation (10%)
FM stereo
Level meter
Level meter
signal generator
connection
reading (dB)
output channel
L-CH
L-CH
A
B
R-CH
L-CH
Adjust RV4 on TU1 for
minimum reading.
minimum reading.
R-CH
R-CH
C
D
L-CH
R-CH
Adjust RV4 on TU1 for
minimum reading.
minimum reading.
L-CH stereo separation : A – B
R-CH stereo separation : C – D
The separations of both channels should be equal.
R-CH stereo separation : C – D
The separations of both channels should be equal.
Specification : Separation more than 28 dB
Adjustment Location : See page 22.
Procedure :
Carrier frequency : 69.5 MHz (FM2 : 3CH)
Output level
Output level
: 60 dB (1 mV)
Procedure :
1. Connect the frequency counter to the TP2 on main board.
2. Adjust RV601 so that the reading on the frequency counter
1. Connect the frequency counter to the TP2 on main board.
2. Adjust RV601 so that the reading on the frequency counter
becomes to 31.25
±
0.1 kHz.
Adjustment Location : See page 22.
FM Polar VCO Adjustment
Setting :
D-BASS switch : OFF
SOURCE button : FM
SOURCE button : FM
FM RF signal
generator
antenna
terminal
terminal
set
+
–
frequency
counter
counter
main board
TP2
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