How to update the firmware, How to setup the idle current of main amplifier - AV Receiver Yamaha RX-V767/HTR-7063, RX-A800
Updating firmware [Software]
When
the following parts are replaced, the firmware must be updated to the latest
version.
DIGITAL P.C.B.
IC951 (TI (DSP) flash ROM) of 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 self diagnostic function menu.
Start up the self-diagnostic function and select “S4.
ROM VER/SUM” 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.
Initializing the back-up IC
(EEPROM: IC903 of the DIGITAL P.C.B.)
After
updating the firmware, the back-up IC MUST be initialised by the following
procedure to have proper memorisation of the set up information (sound field
parameters, system memory and tuner presetting, etc.).
Start
up the self-diagnostic function and select “S3.
FACTORY PRESET” menu. (See “SELF-DIAGNOSTIC FUNCTION”)
Select “PRESET RSRV”, press the “MAIN ZONE ” (power) key of this unit to turn
off the power once and turn on the power again. Then the back-up IC is
initialized.
Required
Tools
• BD, DVD or CD player (with DIGITAL OUTPUT (OPTICAL or COAXIAL) jack)
• Optical cable (when OPTICAL jack is used)
• Digital audio pin cable (when COAXIAL jack is used)
• Firmware CD
* Download the latest firmware from the specified download source and create
the firmware CD.
Connection
Connect this unit and BD/DVD/CD player as shown below.
Operation
Procedures
1. While pressing the “TUNING >>” key of this unit, connect the power
cable of this unit to the AC outlet.
The FIRMWARE UPDATE mode is activated and “CDDA Upgrader” is displayed.
2.
Play the firmware CD on the BD/DVD/CD player. Writing of the firmware starts
automatically.
3.
When writing of the firmware is completed, “Update Success”, “Please...” and
“Power off!!” are displayed repeatedly.
*
If the display remains unchanged for more than 10 seconds after starting the
firmware CD play procedure, perform the firmware CD play procedure again from
the beginning.
If “FILE CORRUPTED” is displayed after “Address:XXXXXX”, make sure that the
written data is not corrupted and perform Steps 1 to 3 of “Operation
Procedures” again.
If “Upgrade Failed” is displayed, perform "operation procedures"
again from the beginning.
4.
Press the “MAIN ZONE ” (power) key of this unit to turn off the power.
5. Eject the firmware CD from the BD/DVD/CD player.
6. Start up the self-diagnostic function and check that the firmware version
and checksum are the same as written ones. (See “Confirmation of firmware version
and checksum”)
Self-diagnostic function
This
unit has self-diagnostic functions that are intended for inspection,
measurement and location of faulty point.
There are 24 main menu items, each of which has sub-menu items.
Starting Self-Diagnostic Function.
While
pressing the “TONE CONTROL” and “INFO” keys of this unit, press the “MAIN ZONE ”(power) key of this unit to turn on the power.
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 trouble shoot, cancel the
protection function as described below, and it will be possible to enter the
self-diagnostic 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 “MAIN ZONE ”
(power) key to turn on the power and keep pressing those 2 keys 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 of this unit flashes to
indicate that the mode is self-diagnostic function mode with the protection
functions disabled.
CAUTION
Using this product with the protection function disabled may cause further
damage to this unit. Use special care for this point when using this mode.
Cancelling Self-Diagnostic Function
Before cancelling self-diagnostic
function, execute setting for FACTORY PRESET of main menu No. S3. (Memory initialisation inhibited or Memory initialised).
* In order to keep the user memory preserved, be sure to select PRESET INHIBIT
(Memory initialisation inhibited).
Press the “MAIN ZONE ” (power) key of this unit to turn off the power
Display provided when Self-Diagnostic Function started
The
display is as described below depending on the situation the last time the
power to this unit is turned off.
When the power is turned off by usual operation:
The FL display of this unit displays “NO PROTECT” then the main menu (sub-menu
“A1-1. DSP MARGIN” of main menu No. A1 DSP AUDIO) a few seconds later.
When the protection function worked to turn off the power:
The FL display of this unit displays the data of protection function which
worked at that time then the main menu (sub-menu “A1-1. DSP MARGIN” of main
menu No. A1 DSP AUDIO) a few seconds later.
Note: At that time if you reactivate the self-diagnostic function after turning
off the power once by pressing the “MAIN ZONE ” (power) key, “NO PROTECT” will
be displayed because that situation is equal to “1. When the power is turned
off by usual operation:” described above.
However the protection function history is stored in a back-up IC with a
backup. For details, refer to main menu P2 PROTECTION HISTORY.”
When there is a history of protection function due to excess
current.
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.
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 “MAIN ZONE ” (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.
Supplementary information: The protection function worked due to a DC voltage
appearing at the speaker terminal. Cause could be a defect in the amplifier.
Turning on the power without correcting the abnormality will cause the
protection function to work in 3 seconds and the power supply will be shut off.
When the protection function worked due to abnormal voltage in
the power supply section.
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 second 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 “MAIN ZONE ” (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.
The
temperature of the heat sink 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 second and the power supply will be shut off.
History of protection
function
When the protection function has worked, its history is stored in memory with a
backup.
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.
Initial settings used to start Self Diagnostic
Function
The following initial settings are used when starting self diagnostic function.
When self-diagnostic function is cancelled, these settings are restored to those
before starting self-diagnostic function.
• Master volume: -20 dB / Zone volume: +2.5dB
• Input: HDMI1 / Zone: AUDIO1
• Main menu: A1-1. DSP MARGIN
• Speaker setting: LARGE, Bass out to SWFR (All channels)
• HDMI Control: Off
• Zone: On
Details of Self-Diagnostic Function menu
DSP
AUDIO
This menu is used to check audio signal route via DSP.
A1-1. DSP MARGIN
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,
Surround Back L
Front R: Front R, Surround R,
Surround Back R
Front L +10 dB: Sub-woofer.
DSP
NON MARGIN
The SUB-WOOFER signal is output including the head margin via DSP.
The audio signal other than SUB-WOOFER is output without including the head
margin via DSP.
When the protection function worked due to excessive heat sink
temperature.
Confirmation of idling current of amp unit
Right
after power is turned on, confirm that the voltage across the terminals of
R1152 (SURROUND BACK RCH), R1154 (SURROUND RCH), R1150 (FRONT RCH), R1148
(CENTER), R1149 (FRONT LCH), R1153 (SURROUND LCH), R1151 (SURROUND BACK LCH) are
between 0.1mV and 10.0mV.
If it exceeds 10.0 mV, open (cut off) R1090 (SURROUND BACK RCH), R1092
(SURROUND RCH), R1088 (FRONT RCH), R1086 (CENTER), R1087 (FRONT LCH), R1091 (SURROUND
Lch), R1089 (SURROUND BACK LCH) and reconfirm the voltage.
Attention
If the measured voltage exceeds 10.0mV after an amplifier repair, first check
for a defective component before cutting the bias resistor.
Confirm that the voltage is 0.2 mV to 15.0 mV after 60 minutes.
