AR-304/KRF-A4020
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
• BASS BOOST......................OFF
• SOURCE DIRECT ...............OFF
• TAPE2/MONITOR................OFF
• SL16/XS8.............................SL16
(2) TUNER
• BAND...................................FM
• PRESET CHANNEL............."--"
• FREQUENCY.......................LOWER LIMIT VALUE
K1 .................................FM:87.50MHz/AM:530kHz
E1/E3............................FM:87.50MHz/AM:531kHz
Q1.................................FM:65.00MHz/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
1The power on state is entered when the power is
tuned on while pressing the [BAND] key.
All functions are initialized and activated in the all
lighting mode.
2All 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.
3E2PROM check(E,T,Q,type 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
1The mute control is not activated when the mode is
switched.
2The test mode will be terminated by plugging it off the
power source or by initializing it when all the settings
will be initialized.
3During the test mode, it can be operated in a special
manner that is different 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
CONTENTS).
4Channel space will be no changed in the test mode.
3-5 CONTENTS
3-5-1 TUNER FUNCTION
WITH THE SELECTOR ON TUNER (E/T/Q TYPE ONLY)
