Sony xr-c6200 Service Manual page 16

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FM Stereo Separation Adjustment
Setting:
[SOURCE]
button
FREQUENCY SELECT switch : FM 200 k
FM RF signal
antenna jack (J1)
generator
0.01 µ F
set
Carrier frequency : 97.9 MHz
Output level : 70 dB (3.2 mV)
Mode : stereo
Modulation : main: 1 kHz, 33.75 kHz deviation (45%)
sub: 1 kHz, 33.75 kHz deviation (45%)
: 19 kHz pilot: 7.5 kHz deviation (10%)
Procedure:
FM Stereo
Level meter
signal generator
connection
output channel
L-CH
R-CH
R-CH R-CH
L-CH R-CH
L-CH Stereo separation: A-B
TE
L 13942296513
R-CH Stereo separation: C-D
The separations of both channels should be equal.
Specification: Separation more than 30 dB
Adjustment Location: See page 17.
www
.
http://www.xiaoyu163.com
: FM
level meter
10 k Ω
+
–
AUDIO OUT REAR jack (J331)
Level meter
reading (dB)
A
L-CH
B
L-CH Adjust RV4 on TU1
for minimum reading.
C
D
Adjust RV4 on TU1
for minimum reading.
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http://www.xiaoyu163.com
8
MW Auto Scan/Stop Level Adjustment
Make this adjustment after "FM Auto Scan/Stop Level Adjust-
ment".
Setting:
[SOURCE]
button
FREQUENCY SELECT switch : MW 10 k
AM RF signal
generator
AM dummy antenna
(50 Ω )
Carrier frequency : 1,000 kHz
30% amplitude
modulation by
1 kHz signal
: 33 dB (44.7 µ V)
Output level
Procedure:
1. Set to the test mode. (See page 14)
[SOURCE]
2. Push the
[MODE]
3. Push the button and set to MW.
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4. Adjust with the volume RV1 on TU1 so that the "MW" indi-
cation turns to "MW0" indication on the display window.
But, in case of already indicated "MW0", turn the RV1 so that
put out light "0" indication and adjustment.
Adjustment Location: See page 17.
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: MW
30 Ω 15 pF
65 pF
set
antenna jack (J1)
button and set to FM.
Display
1 5 0 5 8 2 9 9 4
SHUF
Display
SHUF
m
co
9 9
2 8 9 9