Onkyo HTP 348 Owner's Manual
![Onkyo HTP 348 manual cover](/images/0db0e481ed6a224c1a10a8d6/thumbs/thumb175x175.webp)
To connect your Onkyo HTP 348 to a TV, use an HDMI cable to connect the HDMI OUT port on the receiver to the HDMI IN port on your TV. Ensure both devices are powered off before making the connection. Then, turn on both the TV and the receiver and select the appropriate HDMI input on the TV.
Check that all speaker cables are securely connected to the correct terminals on the receiver and the speakers. Make sure the receiver is set to the correct input source and that the volume is turned up. Also, verify that the "Mute" function is not activated.
To perform a factory reset on your Onkyo HTP 348, turn off the receiver. While holding down the "VCR/DVR" button, press the "ON/STANDBY" button. When "Clear" appears on the display, release the buttons. The receiver will reset to its factory settings.
Regular maintenance should be performed every 6 to 12 months. This includes dusting the exterior, checking all cable connections, and ensuring proper ventilation around the unit to prevent overheating.
To clean your Onkyo HTP 348, use a soft, dry cloth. Avoid using any chemical cleaners or abrasive materials, as these can damage the finish. For stubborn spots, slightly dampen the cloth with water.
Yes, you can use different brand speakers with your Onkyo HTP 348 as long as they are compatible with the receiver's specifications, particularly impedance and power handling. Always check the manual for speaker compatibility.
To update the firmware on your Onkyo HTP 348, download the latest firmware from the Onkyo website onto a USB drive. Insert the USB drive into the receiver's USB port, then follow the on-screen instructions to complete the update. Ensure the receiver is not powered off during the update process.
Overheating may occur due to poor ventilation. Ensure the receiver has enough space around it for proper airflow. Avoid placing it in enclosed spaces and keep it away from direct sunlight or heat sources. Regularly check and clean the vents to prevent dust accumulation.
First, replace the batteries in the remote control. If it still does not work, check for any obstructions between the remote and the receiver. You can also try resetting the remote by removing the batteries and pressing all the buttons.
To adjust the bass and treble settings, press the "Tone" button on the remote control or the front panel of the receiver. Use the arrow keys to select either "Bass" or "Treble," then adjust the levels to your preference using the volume knob or arrow keys.