Wednesday, January 06, 2016

ONKYO AV receiver TX-NR646 – TX-NR747 how to update the Firmware – How to reset the amplifier – TV receiver service and repair

Category: AV Receiver Service and repair  

Contents of this article

  • How to update the firmware 
  • Hoe to reset the AV receiver
  • How to reset the Remote  


Firmware Update TX-NR646 & TX-NR747
Improves the playback of particular audio format. To check if your firmware is the latest version, go in to Setup -> Hardware Setup -> Firmware Update and check the version number. If any of the numbers differ from the latest version available, please update your unit.
Update via USB storage
Note: Please remove the wired/wireless connection before updating through USB. Please prepare a USB storage device such as a USB flash memory stick. You need at least 64 MB of available space to update the firmware. Please unpack the ZIP file onto an empty USB Stick that has been formatted with the FAT file system.
Precautions for the Firmware Update
Please read the update instructions carefully before beginning. The firmware update should take 30 to 40 minutes. Once the update begins, don't turn off the power supply to the A/V receiver until it is time to restart it.
Depending on the conditions of the network, a firmware update via a network may take more than one hour or even fail to finish. If the update is not completed within two hours, turn off the power supply by pushing the ON/STANDBY button and then try updating again from the beginning.
Updating the firmware and adjusting the settings will be done automatically, but may take some time to complete. Please follow the procedures as instructed when you update. Note that the update may fail, or cause problems for your A/V receiver, if you do any of the following:
# Pull out the A/V receiver’s power cord;
# Interrupt the power supply to the A/V receiver (e.g. if the breaker is tripped or if there is an electrical outage);
# Insert or remove the LAN cable from a device in your network when updating over a network;
# Insert or remove a USB memory device from the A/V receiver when updating via USB;
# Operate components connected to the A/V receiver via HDMI, such as a TV or a recording device.
If your A/V receiver is damaged for any of the reasons above, an Onkyo service center will repair the unit for a fee. If you see "No Update" on the front panel immediately after you have started the firmware update process, you have the latest firmware. In this case it is not necessary to do this update.
How to prepare the USB Memory Device:
1. Download the zipped firmware update file and save to the Desktop of your  computer.
2. Right click on the file and select “Extract All” and place the extracted folder on  the Desktop of your computer:
1. Connect the USB Memory Device to the USB port of your computer and copy  the contents of the unzipped/extracted folder onto your USB Memory  Device.
2. Safely eject the USB Memory Device from your computer. The product that you are using may have unexpected issue which will be addressed by  this F/W update
Please check your FW version below and proceed for the FW update.
How to upgrade the firmware via USB:
1. Turn on the receiver and select the USB input, and wait for the “Now  Initializing…” process to complete (35-45 seconds).
2. Insert the USB Memory Device containing the software into the front panel USB  port of the receiver
3. From the front panel press and hold the “USB” input button, followed by the
“On/Standby” button. Unit will display “Update <Enter>". Press Enter
4. Press the “Enter” button on the front panel to begin the update.
5. Do not shut the unit off until “Complete” is shown on the front display
6. Once the update has completed check the firmware version to confirm that the  unit is fully up to date. If it is not, run the update again. To check the firmware version, press the “Home” button on the front panel or  remote control. Highlight “Hardware Setup” and press enter. Highlight  “Firmware Update” and press enter. The current firmware version will be  displayed on the Firmware Update page.
How to reset
1. While holding down CBL/SAT on the main unit (note that step 2 must be performed with this button pressed down) 2. Press ON/STANDBY on the unit. "Clear" is appeared on the display and the unit will enter standby mode.
How to reset the remote controller
1. While holding down RCV on the remote controller (note that step 2 must be performed with this button pressed down) 2. Press and hold down HOME until the  remote indicator lights (about 3 seconds). Within 30 seconds, press RCV again.