Adjustment - Kenwood RXD-501 Service Manual

1. Tuner adjustment
X05-490x
NO. ITEM
DISCRIMINATOR
1
70dBf (ANT INPUT)
DISTORTION 1 kHz, ±40 kHz DEV
DISTORTION
2
(STEREO) 70dBf (ANT INPUT)
1 kHz, ±40 kHz DEV
X05-4890
NO. ITEM
1 TUNED LEVEL
31.2dBf (ANT INPUT)
1 kHz, ±40 kHz DEV
DISTORTION
2 70dBf (ANT INPUT)
(STEREO)
1 kHz, ±40 kHz DEV
PILOT: ±6 kHz DEV
X05-4710
No. ITEM
1 DISCRIMINATOR
DISTORTION
2
(STEREO)
SENSITIVITY
3
(SW)
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

ADJUSTMENT

INPUT OUTPUT
SETTINGS SETTINGS
(A)
Connect a DC voltmeter
98 MHZ,
between pin 1 and pin2 of
(C)
98 MHz,
INPUT OUTPUT
SETTINGS SETTINGS
(A)
98 MHz,
(A)
98 MHz,
OUTPUT
INPUT SETTING
SETTING
(A)
98MHz Connect a DC
1kHz, ±40kHzdev voltmeter to CN2
70dBf (ANT input)
(C)
98MHz
1kHz, ±40kHzdev (B)
Pilot, ±6kHzdev
70dBf (ANT input)
(D)
6.5MHz
(B)
400Hz 30%mod
40dBf (ANT input)
INPUT OUTPUT
SETTINGS SETTINGS
(E)
69 MHz, Connect a frequency
counter to VCO monitor
1 kHz, 0 kHz DEV (CN2).
SUB, 0 kHz DEV
(E)
69 MHz,
Connect a oscilloscope
to TUNER OUT(CN6).
SUB, 10 kHz DEV
Select : L or R
(E) Connect a oscilloscope
SAME AS ABOVE to TUNER OUT(CN6).
RXD-501/551/571/A5/701/751/771/A8
TUNER ALIGNMENT
SETTINGS
MONO
98.0 MHz
CN2.
(EXCEPT K/P)
AUTO
(B)
98.0 MHz
TUNER ALIGNMENT
SETTINGS
MONO
98.0 MHz
AUTO
(B)
98.0 MHz
TUNER
MODE
MONO
98.0MHz
AUTO
98.0MHz
6.5MHz
TUNER ALIGNMENT
SETTINGS
AUTO
69 MHz
AUTO
69 MHz
AUTO
69 MHz
ALIGN FOR
POINTS
L31 0V
L32 Minimum
distortion.
Minimum
IFT (A1)
distortion.
ALIGN FOR
POINTS
Adjust VR1 and stop
at the point where
VR1
ED1 (TUNED) goes
ON.
Minimum
IFT (A1)
distortion.
ALIGNMENT
ALIGN FOR
POINTS
L5 0V
IFT (A1) Minimum distortion
L2 Maximum output
ALIGN FOR
POINTS
Adjust it the
frequency counter
VR 2
reads 31.25 kHz
±100 Hz.
Minimum
TC 1
crosstalk.
Minimum
VR 1
crosstalk.
FIG.
(a)
(a)
FIG.
(a)
(a)
FIG.
(a)
(a)
(a)
FIG.
(a)
(a)
(a)
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