Sony XR-CA300 - Fm-am Cassette Car Stereo, Руководство по обслуживанию

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16
XR-CA300/CA320/CA320X
FM Stereo Separation Adjustment
Setting:
[SOURCE]
button: FM
[FREQUENCY SELECT]
switch: FM 50 k
(XR-CA320/CA320X only)
Procedure:
L-CH Stereo separation:
A
-
B
R-CH Stereo separation:
C
-
D
The separations of both channels should be equal.
Specified Value: Separation more than 30 dB
Adjustment Location: See page 17.
FM Stereo
Level meter Level meter
signal generator
connection reading (dB)
output channel
L-CH L-CH
A
B
R-CH L-CH Adjust RV2 on TU100
for minimum reading.
R-CH R-CH
C
D
L-CH R-CH Adjust RV2 on TU100
for minimum reading.
FM RF signal
generator
Carrier frequency : 97.9 MHz (XR-CA300)
98.00 MHz (XR-CA320/CA320X)
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%)
0.01
µ
F
set
antenna jack (ANT100)
+
–
speaker out terminal
level meter
10 k
Ω
AM Auto Seek/Stop Level Adjustmant
Make this adjustment after “FM Auto Seek/Stop Level Adjust-
ment”.
Setting:
[SOURCE]
button: AM
[FREQUENCY SELECT]
switch: AM 9 k
(XR-CA320/CA320X only)
Procedure:
1. Set to the test mode. (see page 13)
2. Push the
[SOURCE]
button and set to FM.
3. Push the
[MODE]
button and set to AM.
Display
4. Adjust with the volume RV1 on TU100 so that the “AM” indi-
cation turns to “AM0” indication on the display window. But,
in case of already indicated “AM0”, turn the RV1 so that put
out light “
0
” indication and adjustment.
Display
Adjustment Location: See page 17.
MBP
SHUF
(XR-CA300)
MBP
SHUF
(XR-CA320/CA320X)
AM RF signal
generator
Carrier frequency : 1000 kHz (XR-CA300)
999 kHz (XR-CA320/CA320X)
30% amplitude
modulation by
1 kHz signal
Output level
: 33 dB (44.7
µ
V)
(50
Ω
)
set
AM dummy antenna
30
Ω
15 pF
65 pF
antenna jack
(ANT100)
MBP
SHUF
(XR-CA300)
MBP
SHUF
(XR-CA320/CA320X)