Read Sony CDX-C760 / CDX-C760RDS Service Manual online
– 25 –
FM Stereo Separation Adjustment
Setting :
SOURCE button : FM
FM RF signal
generator
0.01 µF
antenna
terminal
terminal
set
Carrier frequency : 98.00 MHz
Output level
Output level
: 35 dB (56.2 µV)
Mode
: mono
Modulation
: no modulation
Procedure :
1. Set to the test mode. (See page 24.)
2. Push the SOURCE button and set to FM.
1. Set to the test mode. (See page 24.)
2. Push the SOURCE button and set to FM.
Display
FM RDS S-Meter Adjustment (CDX-C760RDS only)
Setting :
SOURCE button : FM
3. Push the preset 3 button.
Display
FM RF signal
generator
antenna
terminal
terminal
set
0.01 µF
10 k
Ω
level meter
LINE OUT REAR
Carrier frequency : 97.9 MHz (C760)
: 98.00 MHz (C760RDS)
Output level
: 70 dB (3.2 mV)
Mode
: stereo
Modulation
: main : 1 kHz, 33.75 kHz deviation (45%) (C760)
1 kHz, 20 kHz deviation (26.5%) (C760RDS)
sub
: 1 kHz, 33.75 kHz deviation (45%) (C760)
1 kHz, 20 kHz deviation (26.5%) (C760RDS)
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 26.
Procedure :
4. Push the preset 10 button.
5. Adjust RV651 so that the display indication is “16.0”.
5. Adjust RV651 so that the display indication is “16.0”.
Display
Specification : Display indication : 15.8 to 16.2.
Adjustment Location : See page 26.
SHUF1
SHUF1
SHUF1
REG
REG
REG
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