Denon DRA-685 Operating Instructions
![Denon DRA-685 manual cover](/images/4203617d2626bc8ebb4a9cc3/thumbs/thumb175x175.webp)
To reset the Denon DRA-685 to factory settings, turn off the unit, then press and hold the TUNING UP and TUNING DOWN buttons simultaneously while turning the power back on. This will reset the receiver to its default factory settings.
Ensure that all speaker wires are properly connected to both the receiver and the speakers. Check that the correct input source is selected and that the MUTE function is not activated. Also, verify that the volume is turned up to an audible level.
To improve FM radio reception, extend the FM antenna fully and adjust its position for the best signal. You can also connect an external FM antenna for better reception. Ensure the antenna is properly connected to the FM ANTENNA terminals on the back of the receiver.
Ensure that there is adequate ventilation around the receiver and that it is not placed in a confined space. Check for dust accumulation around the vents and clean them if necessary. Additionally, verify that the speaker impedance matches the receiver's specifications.
Refer to the remote control section in the user manual. Typically, programming involves pressing the MODE button until the desired device mode is selected, then entering the manufacturer code for your device using the number pad.
Yes, you can connect your smartphone using an auxiliary cable. Plug one end into the smartphone's headphone jack and the other into the AUX input on the front or back of the receiver. Select the AUX input on the receiver to play music from your smartphone.
The Denon DRA-685 supports multi-room audio. Connect speakers to the additional speaker outputs for Zone 2 and configure the settings in the receiver menu to direct audio to the second zone.
Regularly dust the exterior and vents of the receiver using a soft, dry cloth. Check all connections periodically to ensure they are secure. Avoid placing the receiver in direct sunlight or humid environments to prevent damage.
Check if the Dimmer function is activated, which might reduce the display brightness. If the display is still not lighting up, inspect the power connection and ensure the receiver is properly turned on.
Connect the turntable's output cables to the PHONO input on the back of the receiver. Ensure the ground wire from the turntable is connected to the grounding terminal on the receiver to prevent hum noise.