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Kenwood KRF-A4030 Service Manual

Kenwood KRF-A4030
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AR-404/KRF-A4030/A4030E/A4030-S
3
CIRCUIT DESCRIPTION
1. BACK UP DATA AND INITIAL STATE
1-1 BACK UP
(1) AMP
• POWER.......................................STANDBY
• INPUT SELECTOR .....................TUNER
• BALANCE ...................................CENTER
• SPEAKER A RELAY ...................ON
• SPEAKER B RELAY ...................OFF
• VOLUME LEVEL........................ -66dB
• BASS LEVEL...............................0dB
• TREBLE LEVEL ..........................0dB
• INPUT LEVEL .............................0dB
• SOURCE DIRECT.......................OFF
• TAPE2/MONITOR.......................OFF
(2) TUNER
• BAND ..........................................FM
• PRESET CHANNEL...................."--"
• FREQUENCY..............................LOWER LIMIT VALUE
K1...............................FM:87.50MHz
AM:530kHz
E1/E3 .........................FM:87.50MHz
AM:531kHz
• AUTO/MANUAL ..........................AUTO
• DISPLAY MODE .........................FREQUENCY
• E ON THRUST RECEIVING .......OFF
MODE
• T1 VOLUME................................OFF(-66dB)
1-2 INITIAL SETTING
The initial setting is performed when the AC power cord
is plugged into the AC power wall out let while pressing
the power (STANDBY) key.
3. TEST MODE
3-1 SETTING
Turn the power ON while pressing the [BAND] key.
3-2 CANCELLATION
Unplug the AC power cord from an AC power wall outlet.
3-3 STARTING ACTIVE CONTENTS
• The power on state is entered whenever the power is
trued on while pressing the [BAND] key.
• All functions are initialized and activated in the all light-
ing mode.
• All lighting mode is canceled when any main unit's
keys are pressed. The normal display obtained when
the selector is set to TUNER then appears.
• E2PROM check(Etype only).
Check the reading data and the writing data of the
E2PROM after setting the test mode.
Display shows blank if the reading data and writing
data are the same. Display shows "LW" if the different
data will be written to E2PROM.
3-4 ACTIVE CONTENTS
• The mute control is not activated when the mode is
switched.
• The test mode will be terminated by plugging it off the
power source or by initializing it when all the settings
will be initialized.
• During the test mode, it can be operated in a special
manner that is deferent from an ordinary operation by
using the keys on the remote control or the main body
,specifically as shown in the following table (3-5 CON-
TENTS).
• Channel space will be no changed in the test mode.
3-5 CONTENTS
3-5-1 TUNER FUNCTION
WITH THE SELECTOR ON TUNER (E TYPE ONLY)
DESTINA-
TION
TUNER
TYPE
BAND
RECEIVING
CHANNEL
SPACE
IF
PLL
REFERENCE
FREQUENCYRANGE
FREQUENCY
DSW3
(D507)
DSW2
(D505)
DSW1
(D504)
DSW0
(D510)
K,P K1(1700)
FM
AM
87.5MHz~108.0MHz
530kHz~1700kHz
100kHz
10kHz
+10.7MHz
+450kHz
25kHz
10kHz
0000
M,X E1
FM
AM
87.5MHz~108.0MHz
531kHz~1602kHz
50kHz
9kHz
+10.7MHz
+450kHz
25kHz
9kHz
0011
M K2(1600)
FM
AM
87.5MHz~108.0MHz
530kHz~1610kHz
100kHz
10kHz
+10.7MHz
+450kHz
25kHz
10kHz
0001
E
E3
RDS
FM
AM
87.5MHz~108.0MHz
531kHz~1602kHz
50kHz
9kHz
+10.7MHz
+450kHz
25kHz
9kHz
0101
DSW0~DSW3(DIODE SW) * 0: NONE DIODE,1:ADD DIODE
2. DESTINATION LIST OF TUNER
Bass and treble are selected while the sound key is
pressed.
3-5-2 AMP FUNCTION
WITH THE SELECTOR ON SOMETHING OTHER THAN
TUNER
• One touch max,min setting for Audio level.
SOUND KEY
KEY MASTER VR.
BASS TREBLE
BAND -89dB 0dB +10dB
AUTO 0dB 0dB +10dB
MEMORY -10dB 0dB +10dB
OPERATION
FUNCTION FL DISPLAY REMARKS
KEY
(EX.)
PTY S LEVEL (1)(SLEVEL), (RF ATT)OFF
RF ATT (2)(SLEVEL), (RF ATT)ON
(3)(NORMAL), (RF)ATT OFF
DISPLAY P.CALL UP P.CALL FREQUENCY -
TA/NEWS PI CODE PI 0000 PI CODE ON/OFF
(1)
(2) (3)
CYCLE
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
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
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299

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Kenwood KRF-A4030 Specifications

Audio Specifications IconAudio 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 distortion0.02 %
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 IconAM Tuner Specifications
Tuning frequency range531 kHz ~ 1, 602 kHz
Usable sensitivity16 µV / (600 µV/m)
Signal to noise ratio50 dB
General Specifications IconGeneral Specifications
Power consumption280 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 IconFM 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 separation36 dB
Selectivity64 dB
Frequency response+0.5 dB ~ –3.0 dB

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