NO
SOUND
If
there is no sound output in TUNER function, repair the machine according to the
instructions below.
IN
FUNCTION TUNER
Solution
Check
and replace IC202, TU101 on the motherboard.
How
to Solve Problems (countermeasures)
1)
Make sure TUNER_LR was inserted pin 1 and 3 of TU101 to IC202 (Pin23, 24). If there is no signal, check for 3.3 V in
Tuner voltage. Make sure the Tuner
control signals (CLK, DAT, CE, RST, GPO2) were inserted into the IC101 for
TU101.
If
not, replace the TUNER with a new one.
2)
Make sure ADC_BCK, ADC_LRCK & DAC_MCLK were entered from IC501 to the
IC202.
3)
Make sure ADC_DATA was inserted from IC202 to the IC501. If there is no signal, check for +5 V and
+3.3 V (ADC) to the IC202. If Not Good, replace it with a new one.
4)
Check the audio signal flow I2S the ic602 for IC501. If there are any problems, check the power
for each IC. Foot is normal, but if the signal waveform to the IC is distorted
or there is no sign, replace it with a new one.
5)
Make sure that the AMP block digital audio is good. See tab "AMP AUDIO
DIGITAL". If AMP is damaged,
replace it with a new one.
NO
SOUND
If
there is no sound output in the MIC IN function, repair the machine according to
the instructions below.
FUNCTION IN THE MIC
Solution
Please
check and replace the IC603, IC605 on the motherboard.
How
to Solve Problems (countermeasures)
1)
Check the MIC_SIG signal to pin 6 of the CN601.
If there is no signal, check the signal to pin 6 CN3M01 the MIC board. Make sure the signal enters pin to 6 CN3M01
HOME card.
2)
Make sure MIC_SIG is inserted from CN601 Pin 6 Pin 3 for IC605 (MIC AMP).
3)
Check that the amplified signal is input from Pin4 IC605. If there is no signal output, check for +12 V
for IC605, IC605. Replace with a new one if it has a problem.
4)
Make sure MIC_BCK & MIC_LRCK is inserted from IC507 and IC603 for DAC_MLCK
from IC501 for IC603. Make sure MIC_DATA
is made from IC603 pin 9 to pin 7 of the IC602.
If there is no signal, check for +5 V and +3.3 V on IC603. If it is
abnormal, replace it with a new one.
5)
Check the I2S signal flow of IC603 for IC602. If there are any problems, check
the power for each IC. If the signs are abnormal, replace them with new ones.
6)
Make sure that the AMP block digital audio is good. If AMP is damaged,
replace it with a new one.
EXPLODED VIEWS
HIDDEN MODE
Push both Front key and RCU key to activate it for 5 seconds.
Disc Lock On/Off (CD Function Only Active)
„ Front Key : STOP
„ RCU Key : STOP
2. Check Version and Option code
„ Front Key : STOP
„ RCU Key : PLAY/PAUSE
„ You can change [Audio MCU Version <-> CD Controller Version <-> EEPROM Option] by SKIP+/-.
3. Clear EEPROM
„ Front Key : STOP
„ RCU Key : SKIP-
4. Edit EEPROM
„ Front Key : STOP
„ RCU Key : SKIP+
„ You can change the digit of option by SKIP+/-.
„ You can edit 0~f by REPEAT or PLAY/PAUSE key.
5. Bluetooth DUT
„ Front Key : STOP
„ RCU Key : PROGRAM
„ Bluetooth model only
6. Power Disc Lock On/Off (CD Function Only Active)
„ Front Key : STOP
„ RCU Key : EQ
7. Amp Clip On/Off
„ Front Key : STOP
„ RCU Key : Mute
Amp Clip Mode Change (Amp Clip On => Amp Clip Off => Level Down display)
TO
MAKE PROGRAM DOWNLOAD
The
name of the program file to download should be CM7520_YYMMDDX.HEX
If
the security program (Water Wall) is enabled on your PC, you must save the file
in a storage device USB and disable the security program for the next download the file to your device.
Caution:
When downloading the file, you must neither disconnect the USB device, move to
a and other function or turn off the power. The USB device should only be
disconnected when the total download process finished.
2.
CD DOWNLOAD THE GUIDE
The
name of the program file to download should be HE003_DATE_00.BIN
If
the security program (Water Wall) is enabled on your PC, you must save the file
in a storage device USB and disable the security program and then make download
the file to your device.
Caution:
When downloading the file, you must neither disconnect the USB device, move to
a and other function or turn off the power. The USB device should only be
disconnected when the total download process finished.
3.
GUIDE DOWNLOAD QE
The
name of the program file to download should be EQ_PRG.BIN
If
the security program (Water Wall) is enabled on your PC, you must save the file
in a storage device USB and disable the security program and then make download
the file to your device.
Caution:
When downloading the file, you must neither disconnect the USB device, move to
a and other function or turn off the power. The USB device should only be
disconnected when the total download process finished.
AMPLIFIER
Stereo
mode 310 W + 310 W (4 Ω at 1 kHz)
Front
Surround Mode 310 W + 310 W (4 Ω to 1 kHz, THD 10%)
Subwoofer
310 W (4 Ω at 1 kHz ,, THD 10%)
