Sony CDX-4260R Service Manual page 17

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FM Stereo Separation Adjustment
Setting :
D-BASS switch : OFF
SOURCE button : FM
FM RF signal
generator
0.01 µ F
Carrier frequency : 98.00 MHz
Output level : 70 dB (3.2 mV)
Mode : stereo
Modulation : main : 1 kHz, 20 kHz deviation (26.7%)
sub : 1 kHz, 20 kHz deviation (26.7%)
19 kHz pilot : 7.5 kHz deviation (10%)
Procedure :
FM stereo
signal generator
output channel
L-CH
R-CH
R-CH
TE
L 13942296513
L-CH
L-CH stereo separation : A – B
R-CH stereo separation : C – D
The separations of both channels should be equal.
Specification : Separation more than 28 dB
Adjustment Location : See page 18.
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antenna
terminal
10 k Ω
set
LINE OUT REAR
Level meter Level meter
connection reading (dB)
A
L-CH
B
L-CH Adjust RV4 on TU601
for nimum reading.
C
R-CH
D
R-CH Adjust RV4 on TU601
for minimum reading.
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8
FM RDS S-Meter Adjustment
Setting :
D-BASS switch : OFF
SOURCE button : FM
FM RF signal
generator
level meter
+
–
Carrier frequency : 98.00 MHz
Output level
Mode
Modulation
Procedure :
1. Set to the test mode. (See page 16.)
2. Push the SOURCE button and set to FM.
3. Push the preset 10 button.
4. Adjust RV801 so that the display indication is "16.0".
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Specification : Display indication : 15.8 to 16.2
Adjustment Location : See page 18.
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antenna
terminal
0.01 µ F
set
: 35 dB (56.2 µV)
: mono
: no modulation
Display
SHUF
Display
SHUF
0 5 8 2 9 9 4 2 8
m
9 9
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