Kenwood KRF-A4030 Service Manual

6
ADJUSTMENT
AR-404/KRF-A4030/A4030E/A4030-S
No. ITEM INPUT SETTINGS
OUTPUT
SETTINGS
RECEIVER
SETTINGS
ALIGNMENT
POINTS
ALIGN FOR
FIG.
1
DISTORTION
(STEREO)
(C)
98.0MHz 1kHz,
±68.25kHz dev. Selector
: L or R Pilot : ±6.75kHz
dev. 70dBf (ANT. input)
(B) 98.0MHz
IFT
(TUNER
UNIT: A1)
Minimum distortion
(L or R)
(a)
2 TUNING LEVEL
(A)
98.0MHz MONO 1kHz,
±75kHz dev.
25dBf (ANT. input)
(B)
MONO
98.0MHz
VR1
(TUNER UNIT)
Adjust VR1 and
stop at the point
where ED51
(TUNED) goes on.
(a)
1 DISCRIMINATOR
(A)
98.0MHz 1kHz,
±40kHz dev.
Connect a DC
voltmeter
between CN2
1 and CN2 2
(TUNER UNIT)
MONO
98.0MHz
L4
(TUNER UNIT)
0V (a)
3
DISTORTION
(STEREO)
98.0MHz
(C)
1kHz, ±40kHz dev.
Selector : L or R
Pilot : ±6kHz dev.
70dBf (ANT. input)
(B)
AUTO
98.0MHz
IFT
(TUNER
UNIT : A1)
Minimum distortion
(L or R)
(a)
2
DISTORTION
(MONO)
(A)
98.0MHz 1kHz,
±40kHz dev. MONO
70dBf (ANT. input)
(B)
MONO
98.0MHz
L5
(TUNER UNIT)
Minimum distortion
(a)
4
1 IDLE CURRENT – Volume: 0 11 mV
VR1 (L)
VR2 (R)
Connect a DC
Volumeter
across
CN11 (L)
CN12 (R)
TUNING LEVEL
(A)
98.0MHz MONO 1kHz,
±40kHz dev.
25dBf (ANT. input)
(B)
MONO
98.0MHz
VR1
(TUNER UNIT)
Adjust VR1 and
stop at the point
where ED51
(TUNED) goes on.
(a)
(b)
FM SECTION : EXCEPT E type SELECTOR : FM
FM SECTION : E type only SELECTOR : FM Adjust NO.1 and NO.2 repeat.
70dBf (ANT. input)
AUDIO SECTION
SPEAKERS
+ -- +
R
+ -- +
L
LR
B
A
FM
75Ω
GND
AM
ANTENNA
REC OUT PLAY IN
AUX MD / TAPE1 TAPE2/
MONITOR
PLAY IN REC OUT PLAY IN PLAY IN
PHONO CD
L
R
(A)
(B)
(C)
(D)
AM SG
FM-MPX-SG
FM-MPX-SG
POLAR SG
AC voltmeter
Oscilloscope
Distortion meter
Dummy antenna
(b)
(a)
Dc voltmeter
CN11, 12
SYSTEM CONNECTIONS
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T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
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TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299

Kenwood KRF-A4030 Specifications

Audio Specifications

Rated power output during STEREO operation (DIN)	105 W + 105 W
Rated power output during STEREO operation (IEC)	100 W + 100 W
Total harmonic distortion	0.02 %
Signal to noise ratio (PHONO MM)	75 dB
Signal to noise ratio (CD)	92 dB
Input sensitivity / impedance (PHONO MM)	2.5 mV / 27 kΩ
Input sensitivity / impedance (CD)	200 mV / 47 kΩ
Output level / impedance (TAPE REC)	200 mV / 2.2 kΩ
Output level / impedance (PRE OUT SUBWOOFER)	2 V / 2.2 kΩ
Tone control (BASS)	±9 dB (at 100 Hz)
Tone control (TREBLE)	±9 dB (at 10 kHz)

AM Tuner Specifications

Tuning frequency range	531 kHz ~ 1, 602 kHz
Usable sensitivity	16 µV / (600 µV/m)
Signal to noise ratio	50 dB

General Specifications

Power consumption	280 W
AC outlet (SWITCHED)	2 (total 150 W max.)
Dimensions (W x H x D)	440mm x 144mm x 389mm
Weight (Net)	8.0 kg

FM Tuner Specifications

Tuning frequency range (U.K. and Europe)	87.5 MHz ~ 108.0 MHz
Tuning frequency range (Russia)	65.0 MHz ~ 74.0 MHz
Usable sensitivity (MONO)	1.2 µV / 13.2 dBf
Usable sensitivity (STEREO)	45 µV / 44.2 dBf
Total harmonic distortion (MONO)	0.2%
Total harmonic distortion (STEREO)	0.8%
Signal to noise ratio (U.K. and Europe, MONO)	65 dB
Signal to noise ratio (U.K. and Europe, STEREO)	58 dB
Signal to noise ratio (Russia, MONO)	63 dB
Signal to noise ratio (Russia, STEREO)	58 dB
Stereo separation	36 dB
Selectivity	64 dB
Frequency response	+0.5 dB ~ –3.0 dB