To Next PageTo Next PageHow to fix Kenwood KMM-U21 Car Receiver when sound cannot be heard?
If you cannot hear any sound from your Kenwood Car Receiver, try the following: - Adjust the volume to the optimum level. - Check the cords and connections.
What to do if my Kenwood KMM-U21 does not work at all?
If your Kenwood Car Receiver does not work at all, reset the unit.
Why does 'READING' keep flashing on my Kenwood KMM-U21?
If “READING” keeps flashing on your Kenwood Car Receiver, do not use too many hierarchical levels or folders.
What to do if my Kenwood KMM-U21 Car Receiver shows 'NO DEVICE' or 'READING' keeps flashing?
If your Kenwood Car Receiver displays “NO DEVICE” or “READING” keeps flashing: - Switch off the developer options on the Android device. - Reconnect the Android device. - If this does not solve the problem, the connected Android device does not support [BROWSE MODE].
Why is playback intermittent on my Kenwood Car Receiver?
If the playback is intermittent or the sound skips on your Kenwood Car Receiver, turn off the power saving mode on the Android device.
Why does 'MISWIRING CHECK WIRING THEN PWR ON' appear on my Kenwood KMM-U21 Car Receiver?
If the message “MISWIRING CHECK WIRING THEN PWR ON” appears, turn the power off. Then, check to be sure the terminals of the speaker wires are insulated properly before turning the power back on.
What to do if my Kenwood KMM-U21 displays 'READ ERROR'?
If your Kenwood Car Receiver displays “READ ERROR”, try copying the files and folders onto the USB device again. If the problem persists, reset the USB device or try using a different USB device.
Why is the radio reception poor on my Kenwood Car Receiver?
If the radio reception on your Kenwood Car Receiver is poor, ensure the antenna is firmly connected.
How to eliminate static noise while listening to the radio on my Kenwood Car Receiver?
To eliminate static noise while listening to the radio on your Kenwood Car Receiver, pull the antenna out all the way.
Why does my Kenwood KMM-U21 Car Receiver say 'NO MUSIC'?
If your Kenwood Car Receiver displays “NO MUSIC”, connect a USB device that contains playable audio files.
General| Model | KMM-U21 |
|---|---|
| Category | Car Receiver |
| Tuner | FM/AM |
| Bluetooth | Yes |
| USB Input | Yes |
| Aux Input | Yes |
| Display Type | LCD |
| MP3 Playback | Yes |
| WMA Playback | Yes |
| FLAC Playback | Yes |
| Subwoofer Output | Yes |
| Detachable Face | Yes |
| Built-in Microphone | Yes |
| Compatible Audio Formats | MP3, WMA, FLAC |
| Weight | 1.2 kg |
| Power Output | 50W x 4 |
| Remote Control | Optional |
Overview of the unit's front panel controls, display, and buttons.
Using the remote control and procedures for resetting the unit and battery replacement.
Canceling demonstration mode, setting the clock, and configuring initial settings.
Searching, direct access, and auto-tuning radio stations.
Configuring tuner, clock synchronization, and other radio-specific options.
Connecting devices and starting audio playback from USB, iPod, or Android.
Navigating files, folders, and selecting device control modes.
Preparing the device and starting Pandora playback.
Creating, saving, and searching for Pandora stations.
Connecting external audio devices via AUX input.
Adjusting sound levels, EQ, and other audio parameters.
Controls for EQ, bass, treble, fader, balance, and volume offset.
Settings for subwoofer output, phase, and audio reconstruction.
Adjusting display dimmer and brightness levels.
Configuring text scrolling and display information.
Details on supported devices, files, and Pandora service.
Information on phone call muting and specific system behaviors.
Solutions for common unit and radio reception problems.
Steps to resolve errors with USB, iPod, and Android devices.
Detailed technical data for tuner and USB interface.
Details on audio output, impedance, voltage, and dimensions.
Instructions for mounting the unit and removing it from the dash.
Guide for connecting power, speakers, and other wires.
Visual guide for connecting power, speakers, and antenna.
List of components included for installation.
