What does 'Unresponsive Device' mean on Kenwood KMM-BT228U Car Receiver?
- Tteresa65Sep 5, 2025
If your Kenwood Car Receiver displays “UNRESPONSIVE DEVICE”, make sure the USB device is not malfunctioning and reattach the USB device.
What does 'Unresponsive Device' mean on Kenwood KMM-BT228U Car Receiver?
If your Kenwood Car Receiver displays “UNRESPONSIVE DEVICE”, make sure the USB device is not malfunctioning and reattach the USB device.
How to fix Kenwood KMM-BT228U when sound cannot be heard?
If you cannot hear any sound from your Kenwood Car Receiver, first adjust the volume to the optimum level. If the problem persists, check the cords and connections to ensure they are properly connected.
What does 'No Device' mean on my Kenwood KMM-BT228U Car Receiver?
If your Kenwood Car Receiver displays “NO DEVICE”, connect a device (USB/iPod/iPhone), and change the source to USB or iPod FRONT/iPod REAR/iPod USB again.
How to improve phone sound quality on Kenwood Car Receiver?
If the phone sound quality is poor on your Kenwood Car Receiver, try reducing the distance between the unit and the Bluetooth device. You can also move the car to a location with better signal reception.
What does 'USB ERROR' mean on my Kenwood KMM-BT228U?
If your Kenwood Car Receiver displays “USB ERROR”, turn off the unit, then connect a different USB device.
Why isn't my iPod/iPhone working with my Kenwood KMM-BT228U Car Receiver?
If your iPod/iPhone does not turn on or work with your Kenwood Car Receiver, check the connection between the unit and the iPod/iPhone. Alternatively, disconnect and reset the iPod/iPhone using a hard reset.
What does 'Unsupported Device' mean on my Kenwood KMM-BT228U?
If your Kenwood Car Receiver displays “UNSUPPORTED DEVICE”, check whether the connected USB device is compatible with the unit and ensure the file systems are in a supported format. You can also try reattaching the USB device.
Why won't my Kenwood KMM-BT228U switch to USB source?
If your Kenwood Car Receiver does not switch to the USB source when you connect a USB device, turn the power off, unplug the USB device, then turn the power back on and reattach the USB device. If this does not solve the problem, turn the power off and reset the unit before trying another USB device.
What to do if my Kenwood Car Receiver does not work at all?
If your Kenwood Car Receiver is not working at all, try resetting the unit.
What does 'Memory Full' mean on my Kenwood KMM-BT228U?
If your Kenwood Car Receiver displays “MEMORY FULL”, you have reached the maximum storage limit of your iPod/iPhone.
Brand | Kenwood |
---|---|
Model | KMM-BT228U |
Category | Car Receiver |
Language | English |
Setting the display language and disabling the demonstration mode.
Steps to set the unit's current time and date.
Configuring the date format and inputting the date.
How to search, tune, and select HD Radio stations and multicast channels.
Activating and receiving emergency broadcast alerts.
Steps for connecting USB drives and iPod/iPhone for playback.
Preparing and starting playback of Pandora streams.
Connecting the tuner, checking ID, and activating subscription.
Starting SiriusXM service and navigating available channels.
Controlling the receiver using the KENWOOD Remote mobile application.
Initial setup, pairing, and configuration for Amazon Alexa.
Adjusting manual EQ, easy EQ, and sound effects.
Optimizing speaker timing for better sound staging.
List of parts and step-by-step instructions for mounting the unit.
Detailed guide for correctly connecting the unit's wiring harness.
Solutions for common sound, power, and radio reception problems.
Resolving issues with USB/iPod connectivity and Pandora application.
Solutions for issues with Spotify, SiriusXM, and Bluetooth connectivity.
Resolving problems with Amazon Alexa voice commands and connectivity.