Self-Diagnostic
Function
While
pressing the “TONE CONTROL” and “INFO” keys, press the (Power) key to turn on
the power and keep pressing those 2 keys and (Power) key for 3 seconds or
longer. The self-diagnostic function mode is activated.
Canceling
Self-Diagnostic Function
1. Before canceling self-diagnostic function, execute setting for “S3. FACTORY PRESET” menu. (Memory initialization inhibited or Memory initialized).
In order to keep the user memory preserved, be sure to select PRESET INHIBIT (Memory initialization inhibited)
1. Before canceling self-diagnostic function, execute setting for “S3. FACTORY PRESET” menu. (Memory initialization inhibited or Memory initialized).
In order to keep the user memory preserved, be sure to select PRESET INHIBIT (Memory initialization inhibited)
2.
Press the (Power) key to turn off the power
PROTECTION
MODES AND CAUSES
When
there is a history of protection function due to excess current.
Cause: An
excessive current flowed through the power amplifier.
Supplementary information: As current of the power amplifier is detected, the abnormal channel can be identified by checking the current detect transistor.
Turning on the power without correcting the abnormality will cause the protection function to work immediately and the power supply will instantly be shut off.
Supplementary information: As current of the power amplifier is detected, the abnormal channel can be identified by checking the current detect transistor.
Turning on the power without correcting the abnormality will cause the protection function to work immediately and the power supply will instantly be shut off.
When
the protection function worked due to abnormal DC output
Cause: DC
output of the power amplifier is abnormal.
Supplementary information: The protection function worked due to a DC voltage appearing at the speaker terminal. A cause could be a defect in the amplifier.
Turning on the power without correcting the abnormality will cause the protection function to work in 5 seconds and the power supply will be shut off
Supplementary information: The protection function worked due to a DC voltage appearing at the speaker terminal. A cause could be a defect in the amplifier.
Turning on the power without correcting the abnormality will cause the protection function to work in 5 seconds and the power supply will be shut off
When
the protection function worked due to abnormal voltage in the power supply
section.
Cause: The
voltage in the power supply section is abnormal.
Supplementary information: The protection function worked due to a defect or overload in the power supply.
Turning on the power without correcting the abnormality will cause the protection function to work in 1 seconds and the power supply will be shut off.
Supplementary information: The protection function worked due to a defect or overload in the power supply.
Turning on the power without correcting the abnormality will cause the protection function to work in 1 seconds and the power supply will be shut off.
When
the protection function worked due to excessive heatsink temperature.
Cause: The
temperature of the heatsink is excessive.
Supplementary information: The protection function worked due to the temperature limit being exceeded.
Causes could be poor ventilation or a defect related to the thermal sensor.
Turning on the power without correcting the abnormality will cause the protection function to work in 1 seconds and the power supply will be shut off.
Supplementary information: The protection function worked due to the temperature limit being exceeded.
Causes could be poor ventilation or a defect related to the thermal sensor.
Turning on the power without correcting the abnormality will cause the protection function to work in 1 seconds and the power supply will be shut off.
UPDATING
FIRMWARE
Confirmation
of firmware version and check
Before and after updating the firmware, check the firmware version and checksum by using the selfdiagnostic function menu.
Before and after updating the firmware, check the firmware version and checksum by using the selfdiagnostic function menu.
Start
up the self-diagnostic function and select “S4.
ROM VERSION/CHECKSUM” menu.
Using the sub-menu, have the firmware version and checksum displayed, and note them down.
ROM VERSION/CHECKSUM” menu.
Using the sub-menu, have the firmware version and checksum displayed, and note them down.
When
the firmware version is different from written one after updating, perform the
updating procedure again from the beginning again.
Initializing
the back-up IC
After
updating the firmware, the back-up IC MUST be initialized by the following
procedure to store the setting information (soundfield parameters, system
memory and tuner presetting, etc.) properly
Start
up the self-diagnostic function and select “S3. FACTORY PRESET” menu.
Select
“PRESET RSRV”, press the (Power) key to turn off the power once and turn on the
power again. Then the back-up IC is initialized.
Firmware
Updating procedure
1. Insert the USB storage device to the USB jack.
2. While pressing the “INFO” key, connect the power cable to the AC outlet.
1. Insert the USB storage device to the USB jack.
2. While pressing the “INFO” key, connect the power cable to the AC outlet.
3.
The USB UPDATE mode is activated and “USB Update” is displayed. Writing of the
firmware starts automatically.
4.
When writing of the firmware is completed, “UPDATE SUCCESS”, “PLEASE...” and
“POWER OFF!” are displayed repeatedly.
5.
Press the (Power) key to turn off the power.
6. Remove the USB storage device from the USB jack.
7. Start up the self-diagnostic function and check that the firmware version and checksum
6. Remove the USB storage device from the USB jack.
7. Start up the self-diagnostic function and check that the firmware version and checksum