Kenwood KRFA 4030 Service Manual
This is the 22 pages manual for Kenwood KRFA 4030 Service Manual.
Read or download the pdf for free.
If you want to contribute, please mail your pdfs to info@audioservicemanuals.com.
Extracted text from Kenwood KRFA 4030 Service Manual (Ocr-read)
Page 2
AR7404(K) COVER1,1P( 1/10/0010:49AM \°-/2
F\
\/
AR-404/KRF-A4030/A4030E/A4030-S
CONTENTS / ACCESSORIES / CAUTIONS
Contents
CONTENTS / ACCESSORIES / CAUTIONS
CIRCUIT DESCRIPTION.
ADJUSTMENT ................. ..
PC BOARD ................................................................ 7
Accessories
SCHEMATIC DIAGRAM
EXPLODED VIEW
PARTS LIST .................... .
SPECIFICATIONS .................................................... 27
FM indoor antenna (1)
(mousse-05)
AM loop antenna (1)
(T90-0852-05)
Remote control unit (1)
(A70-1266-05): RC-R0709 ........ KPMX
(A70-1267-05): RC-R0708 ........ E1 E2E3
Batteries (Hoe/AA) (2)
AC plug adaptor (1)
(E03-O115-05)
*Use to adapt the plug on the power
cord to the shape of the wall outlet.
(Accessory only for regions w here use
is necessary.)
Cautions
defirgfl'e Microcarpla'
If the microcomputer may malfunction (unit cannot be
operated, or shows an erroneous display) if the power cord
is unplugged while the power is ON, or due to some other
external factor. If this happens, execute the following pro»
cedure to reset the microcomputer and return the unit to its
normal operating condition.
FuuSAaflCa'ah
Unplug the power cord from the wall outlet, then
plug it back in while holding down the POWER key.
WM U.S.A. at! m
With the power cord plugged in, turn the POWER lazy
OFF. Then, while holding down the ON/ STANDBY
key, press the POWER key.
- Please note that resetting the microcomputer will clear
the contents of the memory and returns the unit to the
state it was in when it left the factory.
Page 3
AR7404(K) COVER1,1P( 1/10/00 10:49 AM \°-/ 3 /\
AR-404/KRF-A4030/A4030E/A4030-S
CIRCUIT DESCRIPTION
1. BACK UP DATA AND INITIAL STATE (2) TUNER
- BAND .. .FM
1'1 BACK UP - PRESET CHANNE
(1) AMP - FREQUENCY LOWER LIMIT VALUE
. POWER ............... ....STANDBY K1 'FM-87 50MHZ
- INPUT SELECTOR. ....TUNER ' lAM-530kHz
- BALANCE .................. ---CENTER E1/E3 ......................... FM:87.50MHz
- SPEAKER A RELAY .. AM-531 kHz
- SPEAKER B RELAY -- - AUTO/MANUAL .. ....AUTO
' VOLUME LEVEL
- BASS LEVEL....
- TREBLE LEVEL
- INPUT LEVEL .....
' SOURCE DIRECT
- TAPE2/MONITOR
- DISPLAY MODE.
- E ON THRUST RECEIVING
MODE
- T1 VOLUME ................................ OFF(-66dB)
.FREQUENCY
...OFF
1-2 INITIAL SETI'ING
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.
2. DESTINATION LIST OF TUNER
RECEIVING PLL
DESTINA- Tar: BAND FREQUENCY C3223?" IF REFERENCE (333; (3:2): (3:31) 303:3)
TION RANGE FREQUENCY
FM 8715MHZ~108.0MHZ 100kHz +10.7MHZ 25kHz
Kip (1700) AM 530kHz~1700kHz 10kHz +450kHz 10kHz 0 ° ° 0
M x E FM 87.5MHz~108.0MHz 50kHz +10.7MHZ 25kHz o 0 1 1
4 AM 531kHz~1602kHz 9kHz +450kHz 9kHz
FM 87.5MHZ~108.0MHZ 100KHZ +10.7MHZ 25kHZ
C) M (1600) AM 530kHz~1610kHz 10kHz +450kHz 10kHz 0 O 0 1
E E3 FM 87.5MHZ~108.0MHZ 50kHZ +10.7MHZ 25kHZ 0 1 0 1
RDS AM 531 kHZ~1602kHZ 9kHZ +450kHZ 9kHZ
DSWO~DSW3(DIODE SW) " 02 NONE DIODE,12ADD DIODE
3. TEST MODE ' During the test mode, it can be Operated in a special
manner that is deferent from an ordinary Operation by
3-1 SETTING
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.
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 3.5 CONTENTS
trued on while pressing the [BAND] key. 3_5_1 TUNER FUNCTION
- All functions are initialized and activated in the all light- WITH THE SELECTOR ON TUNER (E TYPE ONLY)
ing mode. OPERATION
- All lighting mode is canceled when any main unit's KEV F"°°" EX FL D'SPL REMARKS
keys are pressed. The normal display Obtained when pTy SLEVEL I1)(SLEVEL) (RF A'I'I')OFF ,1 L
- RF ATT (2)(SLEVEL),( RF A'I'I')ON (2)43)
the selector Is set to TUNER then appears. (3)(NORMAL) (RFWT OFF CYCLE
. E2PROM check(Etype only). DISPLAY PCALL UP P. CALL FREQUENCY -
Check the reading data and the writing data of the NEWS PICODE P' 0000 PICODE ON/OFF
EZPROM after setting the test mode. 3-5-2 AMP FUNCTION
Display shows blank if the reading data and writing WITH THE SELECTOR ON SOMETHING OTHER THAN
data are the same. Display shows "LW" if the different TUNER
data will be written to E2PROM. - One touch max,min setting for Audio level.
SOUND KEY
3-4 ACTIVE CONTENTS KEY MASTER VR. BASS TREBLE
- The mute control is not activated when the mode is BAND -89dB OdB +10dB
SWIChed- _ _ _ _ AUTO OdB OdB +10dB
The test mode Will be terminated by plugging It off the MEMORY -10dB OdB +10dB
power source or by initializing it when all the Settings Bass and treble are selected while the sound key is
will be initialized. pressed.