UPDATING FIRMWARE
When the following parts
are replaced, the firmware must be updated to the latest version.
DIGITAL P.C.B.
IC21 and IC44 on DIGITAL P.C.B.
Confirmation of firmware version and checksum
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.
(For details, refer to “SELF-DIAGNOSTIC FUNCTION”.)
* 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 - (EEPROM: IC23 on DIGITAL P.C.B.)
●
Confirmation of firmware version and checksum
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.
(For details, refer to “SELF-DIAGNOSTIC FUNCTION”.)
* When the firmware version is different
from written one after updating, perform the updating procedure again from the
beginning again.
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.
(For details, refer to “SELF-DIAGNOSTIC FUNCTION”.)
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.
Required Tools
• Latest firmware
Preparation
1.
Download the latest firmware from the specified download source to the folder
of the PC.
2. Copy the latest firmware from the PC to the root folder of the USB storage
device.
Note) When the latest firmware is copied to a subfolder of the USB storage
device, the update will not proceed.
Operation Procedures
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.
[If “ERROR! xxxxxx” is displayed during writing of the firmware, refer to “List of Error Messages” to determine the cause and perform the updating procedure again from the beginning.]
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.
(For details, refer to “Confirmation of firmware version and checksum”.)
List of Error Messages
When
firmware writing error, “ERROR! xxxxxx” is displayed.
* “xxxxxx” is a hexadecimal
value, and each bit is represented as follows.
Self-diagnostic function
This unit has
self-diagnostic functions that are intended for inspection, measurement and
location of faulty point.
Each item has a main menu, each of which has sub-menu items.
Listed in the table below are main menu items and submenu items.
Note: Some of the menu items
listed below may not apply to the models.
Starting Self-Diagnostic Function
While
pressing the “TONE CONTROL” and “INFO” keys, press the “ ” (power) key to turn
on the power, and release those 2 keys.
The self-diagnostic function mode is activated.
Starting Self-Diagnostic Function in the protection cancel mode
If
the protection function works and causes hindrance to troubleshooting, cancel
the protection function by the procedure below, and it will be possible to
enter the selfdiagnostic function mode. (The protection functions other than
the excess current detect function will be disabled.)
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 with the protection functions
disabled.
In this mode, the “SLEEP” segment of the FL display flashes to indicate that
the mode is self-diagnostic function mode with the protection functions
disabled.
CAUTION
Using
this unit with the protection function disabled may cause further damage to
this unit. Use special care for this point when using this mode.
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).
2. Press the (power) key to turn off the power.
Display provided when Self-Diagnostic Function started
The
display is as described below depending on the situation when the power to this
unit is turned off.
When the
power is turned off by usual operation:
“NO
PROTECT” is displayed. Then “A1-1. DSP THROUGH” is displayed in a few seconds.
When the protection function worked to turn off the power:
The
information of protection function which worked at that time is displayed. Then
“A1-1. DSP THROUGH” is displayed in a few seconds.
Note: At that time if you restart the self-diagnostic function after turning
off the power once, “NO PROTECT” will be displayed. That is because that
situation is equal to “1. When the power is turned off by usual operation:”.
However history of the protection function is stored in memory as backup data.
For details, refer to “T4. PROTECTION DETECTION” menu.
When there is a history of protection function due
to excess current.
Cause: An excessive current flowed through the power amplifier.
Supplementary information: As
over current of the power amplifier is detected, check condition of each power
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.
Notes:
• Applying the power to this unit without correcting the abnormality can be
dangerous and cause additional circuit damage. To avoid this, if “I PROTECT”
protection function works 1 time, the power will not turn on even when the “ ”
(power) key is pressed. In order to turn on the power again, start up the self-diagnostic
function.
• The output transistors in each amplifier channel should be checked for damage
before applying power to this unit.
• Amplifier current should be monitored by measuring DC voltage across the
emitter resistors for each channel.
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.
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.
Notes:
• Applying the power to this unit without correcting the abnormality can be
dangerous and cause additional circuit damage. To avoid this, if “PS” and “DC”
protection function works 3 times consecutively, the power will not turn on
even when the “ ” (power) key is pressed. In order to turn on the power again,
start up the selfdiagnostic function.
• The output transistors in each amplifier channel should be checked for damage
before applying power to this unit.
• Amplifier current should be monitored by measuring DC voltage across the
emitter resistors for each channel.
When the protection function worked due to excessive heatsink/bridge diode temperature.
Cause: The temperature of the heatsink/bridge diode 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.
When the protection function worked due to excessive power supply voltage of USB.
Cause: The power supply voltage of USB is excessive.
If the power supply voltage of the USB device connected to the USB terminal is
abnormal, “USB Overloaded” is displayed and the protection function works and
the power supply will be shut off.
When the protection function worked due to short between speaker terminals.
Cause: Because of the speaker cables, etc., a short occurred between
the speaker terminals, and excessive current flowed through the amplifier.
Supplementary information: Use
the same detection route as for the protection function due to excess current.
If excess current is detected after the speaker relay worked (ON), it is
determined that there may be a short between the speaker terminals.
Protection function works and the power supply will be shut off. If the power
supply is turned on again, “CHECK SP WIRES” will be displayed.
History of protection function
When
the protection function has worked, its history is stored in memory as backup
data.
Even if no abnormality is noted while servicing the unit, an abnormality which
has occurred previously can be defined as long as the backup data has been stored.
Functions in Self-Diagnostic Function mode
In
addition to the self-diagnostic function menu items, functions listed below are
available.
• Power ON/OFF
• Master volume
• Muting
• Input selection
* Functions related to the tuner
and the set menu are not available.
Initial settings when Self-Diagnostic Function started
The following initial
settings are used when self-diagnostic function is started.
When self-diagnostic function is canceled, these settings are restored to those
before starting self-diagnostic function.
• Master volume: -20 dB
• Input: HDMI 1
• Main menu: A1-1. DSP THROUGH
• Speaker setting: LARGE (All channels)
|
• |
HDMI setting |
Off |
Details of Self-Diagnostic Function menu
DSP AUDIO
This
menu is used to check audio signal route via DSP.
A1-1. DSP THROUGH
The audio signal is output including the head margin via DSP.
* When input source is stereo,
signal is assigned as below.
Front L: Front L, Center, Surround L
Front R: Front R, Surround R
Front L +10 dB: Subwoofer.
Wiring diagram
