AR-304/KRF-A4020
CIRCUIT DESCRIPTION
1. BACK UP DATA AND INITIAL STATE (2) TUNER
Y BAND ...................................FM
1-1 BACK UP
Y PRESET CHANNEL............."- - "
(1) AMP
Y FREQUENCY.......................LOWER LIMIT VALUE
Y POWER................................STANDBY
K1 .................................FM:87.50MHz/AM:530kHz
Y INPUT SELECTOR..............TUNER
E1/E3............................FM:87.50MHz/AM:531kHz
Y BALANCE ............................CENTER
Q1.................................FM:65.00MHz/AM:531kHz
Y SPEAKER A RELAY............ON
Y AUTO/MANUAL ...................AUTO
Y SPEAKER B RELAY............OFF
Y DISPLAY MODE ..................FREQUENCY
Y VOLUME LEVEL.................-66dB
Y E ON THRUST RECEIVING ...........OFF
Y BASS LEVEL .......................0dB
MODE
Y TREBLE LEVEL...................0dB
Y T1 VOLUME.........................OFF(-66dB)
Y INPUT LEVEL ......................0dB
Y BASS BOOST......................OFF1-2 INITIAL SETTING
Y SOURCE DIRECT ...............OFFThe initial setting is performed when the AC power cord
Y TAPE2/MONITOR................OFFis plugged into the AC power wall out let while pressing
Y SL16/XS8.............................SL16the power (STANDBY) key.
2. DESTINATION LIST OF TUNER
RECEIVINGPLL
DESTINA TUNERCHANNELDSW3DSW2DSW1DSWO
BANDFREQUENCYIFREFERENCE
TIONTYPESPACE(D507)(D505)(D504)(D510)
RANGEFREQUENCY
FM87.5MHz~108.0MHz100kHz+10.7MHz25kHz
K,PK1(1700)0000
AM530kHz~1700kHz10kHz+450kHz10kHz
FM87.5MHz~108.0MHz 50kHz+10.7MHz25kHz
M.XE10011
AM531kHz~1602kHz9kHz+450kHz9kHz
FM87.5MHz~108.0MHz100kHz+10.7MHz25kHz
MK2(1600)0001
AM530kHz~1610kHz10kHz+450kHz10kHz
E3FM87.5MHz~108.0MHz 50kHz+10.7MHz25kHz
E,T0101
RDSAM531kHz~1602kHz9kHz+450kHz9kHz
FML65.0MHz~74.0MHz10kHz+10.7MHz5kHz
Q1
QFMH87.5MHz~108MHz50kHz+10.7MHz5kHz1011
RDS
AM531kHz~1602kHz9kHz450kHz9kHz
DSW0~DSW3(DIODE SW) * O: NONE DIODE,1:ADD DIODE
3. TEST MODEbody ,specifically as shown in the following table (3-5
CONTENTS).
3-1 SETTING4 Channel space will be no changed in the test mode.
Turn the power ON while pressing the [BAND] key.
3-5 CONTENTS
3-2 CANCELLATION
Unplug the AC power cord from an AC power wall outlet.3-5-1 TUNER FUNCTION
WITH THE SELECTOR ON TUNER (E/T/Q TYPE ONLY)
3-3 STARTING ACTIVE CONTENTS
1 The power on state is entered when the power isOPERATION KEYFUNCTIONFL DISPLAYREMARKS
(EX.)(1)
tuned on while pressing the [BAND] key.PTYS LEVEL(1)(SLEVEL),(RF ATT)OFF
(2) (3)
All functions are initialized and activated in the allRF ATT(2)(SLEVEL),(RF ATT)ON
(3)(NORMAL),(RF)ATT OFFCYCLE
lighting mode.
DISPLAYP.CALL UP
2 All lighting mode is canceled when any main unitOsBASS BOOSTP.CALL DOWNP.CALL FREQUENCY
keys are pressed. The normal display obtained whenTA/NEWSPI CODEPI 0000 PICODE ON/OFF
the selector is set to TUNER then appears.3-5-2 AMP FUNCTION
3 E2PROM check(E,T,Q,type only).
WITH THE SELECTOR ON SOMETHING OTHER THAN
Check the reading data and the writing data of the
TUNER
E2PROM after setting the test mode.
1 One touch max,min setting for Audio level.
Display shows blank if the reading data and writing
SOUND KEY
data are the same. Display shows �LW� if the different
KEYMASTER VR.
BASSTREBLE
data will be written to E2PROM.
BAND-89dB-10dB-10dB
3-4 ACTIVE CONTENTS
AUTO0dB+10dB+10dB
1 The mute control is not activated when the mode is
MEMORY-10dB0dB0dB
switched.
Bass and treble are selected when the sound key is
2 The test mode will be terminated by plugging it off the
pressed.
power source or by initializing it when all the settings
will be initialized.2 Tuned light
3 During the test mode, it can be operated in a special
XS8SL16
manner that is different from an ordinary operation by
XS8/SL16TUNED LIGHTSTUNED LIGHTS
using the keys on the remote control or the main
SWITCHOFFON
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