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 are the same as written ones.
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 are the same as written ones.
