15
XR-CA300/CA320/CA320X
TUNER SECTION
0 dB=1
µ
V
Cautions during repair
When the tuner unit is defective, replace it by a new one be-
cause its internal block is difficult to repair.
Note:
Adjust the tuner section in the sequence shown below.
1. FM Auto Seek/Stop Level Adjustment
2. FM Stereo Separation Adjustment
3. AM Auto Seek/Stop Level Adjustment
FM Auto Seek/Stop Level Adjustment
Setting:
[SOURCE]
button: FM
[FREQUENCY SELECT]
switch: FM 50 k (XR-CA320/CA320X only)
Procedure:
1. Set to the test mode. (see page 13)
2. Push the
[SOURCE]
button and set to FM.
Display
3. Adjust with the volume RV3 on TU100 so that the “FM” indi-
cation turns to “FM0” indication on the display window.
But, in case of already indicated “FM0”, turn the RV3 so that
put out light “0” indication and adjustment.
Display
Adjustment Location: See page 17.
FM RF signal
generator
dummy
antenna
Carrier frequency : 97.9 MHz (XR-CA300)
98.00 MHz (XR-CA320/CA320X)
Output level
: 22 dB (12.6
µ
V)
Mode
: mono
Modulation
: 1 kHz, 22.5 kHz deviation (30%)
antenna
jack (ANT100)
set
50
Ω
50
Ω
0.1pF
MBP
SHUF
(XR-CA300)
MBP
SHUF
(XR-CA320/CA320X)
MBP
SHUF
(XR-CA300)
MBP
SHUF
(XR-CA320/CA320X)
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