Tuner Adjustment - Kenwood RXD-402 Service Manual

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