Sony XR-C7200R Service Manual page 18

FM Stereo Separation Adjustment
Setting:
[SOURCE]
button: FM
FM RF signal
antenna jack (J10)
generator
0.01 µ F
Carrier frequency : 98.0 MHz
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%)
Procedure:
FM Stereo
Level meter
signal generator
connection
output channel
L-CH
R-CH
R-CH
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 26 dB
Adjustment Location: See page 20.
level meter
4 Ω
+
set
–
speaker out terminal
Level meter
reading (dB)
A
L-CH
B
L-CH Adjust RV4 on TU10
for minimum reading.
C
R-CH
D
R-CH Adjust RV4 on TU10
for minimum reading.
FM RDS S-Meter Adjustment
Setting :
[SOURCE]
button: FM
FM RF signal
generator
Carrier frequency
Output level
Mode
Modulation
Procedure :
1. Set to the test mode. (See page 16.)
[SOURCE]
2. Push the
[10]
3. Push the preset
4. Adjust RV110 on MAIN board so that the display indication
is "16.0".
Specification : Display indication : 15.8 to 16.2.
Adjustment Location : See page 20.
– 18 –
antenna jack (J10)
0.01 µ F
set
: 98.00 MHz
: 35 dB (56.2 µ V)
: mono
: no modulation
button and set to FM.
Display
REG
button.
Display
REG
SHUF1
SHUF1