Tuner Adjustment - Kenwood RXD-402 Service Manual

QQ
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Tuner adjustment

X04-1313 Q TYPE (65MHz~74MHz BAND)
N0. ITEM
1 VCO
RESONANCE
2
POINT
3 SEPARATION
TE
L 13942296513
AC voltmeter
www
Oscilloscope
.
(B)
ADJUSTMENT
INPUT
SETTINGS
(C)
69 MHz, Connect a frequency
70 dBf (ANT INPUT) counter to VCO monitor
1 kHz, 0 kHz DEV
SUB, 0 kHz DEV
(C)
69 MHz,
70 dBf (ANT INPUT) Connect a oscilloscope
1 kHz, 40 kHz DEV 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
x ao u163
y
i
RXD-402/452/502/552/572S/A41/A51
2 9
8
OUTPUT TUNER
SETTINGS SETTINGS
AUTO
69 MHz
X04 (CN2).
AUTO
69 MHz
AUTO
69 MHz
Q Q
3 6 7 1 3 1 5
Fig (a)
(A)
FM-MPX-SG
POLAR SG co
(C) FM-MPX-SG
.
(D)
9 4 2 8
ALIGNMENT
ALIGN FOR
POINTS
Adjust it the
frequency counter
VR 2
reads 31.25 kHz
±100 Hz.
Minimum
TC 1
crosstalk.
Minimum
VR 1
crosstalk.
0 5 8 2 9 9 4
m
Dummy antenna
AM-SG
9 9
FIG.
(a)
(a)
(a)
2 8 9 9
11