How to update the firmware, how to enter service mode, service mode adjustments - Yamaha AV Receiver RX V767, Yamaha RX A800
Updating firmware
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
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.
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.)
(EEPROM: IC903 of the DIGITAL P.C.B.)
After updating the firmware, the back-up IC MUST be initialized by the following procedure to have proper memorization 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.
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.
• 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.
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.
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.
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”)
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 submenu items.
There are 24 main menu items, each of which has submenu items.
Starting Self-Diagnostic Function.
While pressing the “TONE CONTROL” and “INFO” keys of this unit as shown in the figure below, press the “MAIN ZONE ”(power) key of this unit to turn on the power.
The self-diagnostic function mode is activated.
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.
(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.
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.
Canceling Self-Diagnostic Function
Before canceling self-diagnostic function, execute setting for FACTORY PRESET of main menu No. S3. (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 “MAIN ZONE ” (power) key of this unit to turn off the power
* In order to keep the user memory preserved, be sure to select PRESET INHIBIT (Memory initialization inhibited).
2. 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.
1. 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.
1. 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.”
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.
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.
• 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.
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 3 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 3 seconds and the power supply will be shut off.
When the protection function worked due to abnormal voltage in the power supply section.
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.
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.
• 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.
When the protection function worked due to excessive heat sink temperature.
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 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.
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..
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 canceled, 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
The following initial settings are used when starting self diagnostic function.
When self-diagnostic function is canceled, 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: Subwoofer.
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: Subwoofer.
DSP NON MARGIN
The SUBWOOFER signal is output including the head margin via DSP.
The audio signal other than SUBWOOFER is output without including the head margin via DSP
The SUBWOOFER signal is output including the head margin via DSP.
The audio signal other than SUBWOOFER is output without including the head margin via DSP
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.
● 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.