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Tuner Adjustment - Kenwood RXD-402 Service Manual

Mini hifi component system
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Tuner adjustment

X04-1313 Q TYPE (65MHz~74MHz BAND)
N0.
ITEM
1
VCO
70 dBf (ANT INPUT)
RESONANCE
70 dBf (ANT INPUT)
2
POINT
1 kHz, 40 kHz DEV
3
SEPARATION
AC voltmeter
Oscilloscope
(B)
ADJUSTMENT
INPUT
OUTPUT
SETTINGS
SETTINGS
(C)
69 MHz,
Connect a frequency
counter to VCO monitor
1 kHz, 0 kHz DEV
X04 (CN2).
SUB, 0 kHz DEV
(C)
69 MHz,
Connect a oscilloscope
to TUNER OUT(CN6).
SUB, 10 kHz DEV
Select : L or R
(C)
Connect a oscilloscope
SAME AS ABOVE
to TUNER OUT(CN6).
TO CN6
3pin (Lch)
1pin (Rch)
2pin (GND)
Distortion meter
RXD-402/452/502/552/572S/A41/A51
TUNER
ALIGNMENT
SETTINGS
AUTO
69 MHz
AUTO
69 MHz
AUTO
69 MHz
Fig (a)
(A)
FM-MPX-SG
POLAR SG
(C)
FM-MPX-SG
(D)
AM-SG
ALIGN FOR
POINTS
Adjust it the
frequency counter
VR 2
reads 31.25 kHz
±100 Hz.
Minimum
TC 1
crosstalk.
Minimum
VR 1
crosstalk.
Dummy antenna
FIG.
(a)
(a)
(a)
11

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