Onkyo DX C390 Instruction Manual
![Onkyo DX C390 manual cover](/images/059ab64f6c67a27ee8a9b59c/thumbs/thumb175x175.webp)
To reset the Onkyo DX C390, press and hold the Stop button while pressing the Power button. This will reset the device to its factory settings.
Ensure that the unit is plugged in and turned on. Try pressing the Open/Close button again. If the tray still won't open, there may be a mechanical issue, and you should contact Onkyo support.
Check if the CD is inserted correctly and is clean. Try different CDs to see if the issue persists. If the problem continues, the laser lens may need cleaning or there might be a hardware issue requiring professional service.
Use a CD lens cleaning disc available at most electronics stores. Follow the instructions provided with the cleaning disc to ensure proper cleaning.
Yes, the Onkyo DX C390 supports playing MP3 CDs. Ensure the disc is formatted correctly and not scratched or damaged.
Check the connections between the CD player and the amplifier or speakers. Ensure cables are securely connected and not damaged. Also, check the audio settings on both the CD player and connected devices.
Press the Memory button, then use the Skip buttons to select the desired track number. Press Memory again to store it. Repeat for additional tracks, then press Play to start the programmed playback.
Check if the CD is scratched or dirty. Clean it if necessary. Ensure the CD player is on a stable surface to prevent vibration. If the problem persists, the unit may require servicing.
Ensure high-quality audio cables are used and that the CD player is connected to a good quality amplifier and speakers. Additionally, use well-recorded CDs and experiment with the audio settings on your connected devices.
Regularly clean the exterior with a soft, dry cloth. Use a CD lens cleaning disc occasionally to keep the laser lens clean. Avoid exposing the unit to extreme temperatures or humidity.