Onkyo TX SR503, TX SR503E, TX SR8350 Instruction Manual
![Onkyo TX SR503, TX SR503E, TX SR8350 manual cover](/images/89ddf7a09c6b04da40a5092d/thumbs/thumb175x175.webp)
To reset the Onkyo TX SR503 to factory settings, press and hold the VCR/DVD button and then press the Standby/On button. When 'Clear' appears on the display, release both buttons. The receiver will reset to its factory settings.
If your Onkyo TX SR503E is not turning on, first ensure that the power cable is securely connected. Check the outlet by plugging in another device. If the unit still does not turn on, it may require service from a qualified technician.
To troubleshoot audio issues with the Onkyo TX SR8350, ensure all speaker connections are secure. Check the speaker configuration settings in the receiver's menu. Also, verify that the correct input source is selected. If problems persist, try a factory reset.
The Onkyo TX SR503 does not have built-in Bluetooth connectivity. To connect Bluetooth, use an external Bluetooth adapter that connects to the receiver's input.
To calibrate speakers on the Onkyo TX SR503E, use the receiver's built-in setup menu. Navigate to the speaker setup section and follow the on-screen instructions to adjust speaker levels and distances for optimal sound.
The Onkyo TX SR8350 does not support firmware updates via the Internet or USB. Firmware updates, if available, must be performed by an authorized Onkyo service center.
Ensure that the surround sound mode is correctly set and that the rear speakers are properly connected. Check the speaker settings in the receiver's menu to confirm the rear speakers are enabled.
Connect the subwoofer to the Subwoofer Pre-Out jack on the back of the Onkyo TX SR503E using an RCA cable. Ensure the subwoofer is powered on and adjust the settings as needed within the receiver's setup menu.
The Onkyo TX SR8350 does not have HDMI inputs. To connect HDMI devices, use an HDMI switcher or connect directly to your TV and use an optical or coaxial cable for audio from the TV to the receiver.
To change the input source on the Onkyo TX SR503, use the Input Selector knob on the front panel or the corresponding source button on the remote control to cycle through available inputs.