J
Joseph WilsonSep 12, 2025
What does “CHAN UNSUB” mean on my JVC KD-R640 Car Receiver and how to fix it?
- YYvonne SmithSep 12, 2025
If the JVC Car Receiver displays “CHAN UNSUB”, call 1-866-635-2349 to subscribe.
To Next PageTo Next PageWhat does “CHAN UNSUB” mean on my JVC KD-R640 Car Receiver and how to fix it?
If the JVC Car Receiver displays “CHAN UNSUB”, call 1-866-635-2349 to subscribe.
Why does my JVC KD-R640 Car Receiver say “CHAN UNAVAIL”?
If the JVC Car Receiver displays “CHAN UNAVAIL”, the selected channel is unavailable.
Why does my JVC KD-R640 say “CHECK TUNER”?
If the JVC Car Receiver displays “CHECK TUNER”, make sure the SiriusXM Connect Vehicle Tuner is connected to the unit.
What does “CHK DEVICE” mean on my JVC KD-R640 Car Receiver?
If the JVC Car Receiver displays “CHK DEVICE”, check the Pandora® application on your device.
How to fix no sound on JVC KD-R640 Car Receiver?
If you cannot hear any sound from the JVC Car Receiver, try the following: * Adjust the volume to the optimum level. * Check the cords and connections. * Ensure the rear ground terminal connected to the car’s chassis uses shorter and thicker cords. * Address the “MISWIRING CHK WIRING THEN RESET UNIT” / “WARNING CHK WIRING THEN RESET UNIT” message.
What does “NO STATIONS” mean on my JVC KD-R640 Car Receiver?
If the JVC Car Receiver displays “NO STATIONS”, it means that no registered station is found.
Why does my JVC KD-R640 say “NO SKIPS”?
If the JVC Car Receiver displays “NO SKIPS”, it means that the skip limit has been reached.
What to do if my JVC KD-R640 Car Receiver displays “UPGRADE APP”?
If the JVC Car Receiver displays “UPGRADE APP”, make sure you have installed the latest version of the Pandora® application on your device.
What does “STATION LIM” mean on my JVC Car Receiver?
If the JVC Car Receiver displays “STATION LIM”, the number of registered stations has reached its limit. Try again after deleting an unnecessary station on your device.
What to do if my iPod/iPhone won't work with my JVC Car Receiver?
If the iPod/iPhone does not turn on or does not work with the JVC Car Receiver, check the connection between the unit and the iPod/iPhone. You can also detach and reset the iPod/iPhone using a hard reset and check whether the [IPOD SWITCH] setting is appropriate.
General| Tuner | AM/FM |
|---|---|
| RDS | Yes |
| Bluetooth | Yes |
| USB Port | Yes |
| Preamp Outputs | 3 (Front, Rear, Subwoofer) |
| Display Color | White |
| CD Player | Yes |
| AUX Input | Yes |
| Subwoofer Output | Yes |
| Remote Control | Yes |
| Display Type | LCD |
| Preset EQ | Yes |
| High-Pass Filter | Yes |
| Low-Pass Filter | Yes |
| Detachable Face | Yes |
| Channels | 4 |
| Power Output | 50 Watts x 4 |
| RMS Power | 22 W |
| Audio Formats Supported | MP3, WMA |
Includes warnings, cautions, and general safe operating practices for user safety.
Covers remote control usage, unit cleaning, and proper disc handling procedures.
Identifies key controls and features on the unit's front panel for user interaction.
Explains remote operation and fundamental tasks like power, volume, and source selection.
Guides through cancelling demonstrations, setting the clock, and basic system configuration.
Details how to enable or disable audio sources like AM, Pandora, and AUX.
Explains how to find, store, and select radio stations using manual or automatic tuning.
Details searching by program type (PTY) and setting the radio timer.
How to start playback and navigate tracks/files for CD, USB, and iPod sources.
Explains repeat play and random play options for various media types.
Steps to connect and play audio from a portable player via the AUX input.
Guides connecting and using a Bluetooth device via the KS-BTA100 adapter.
How to customize illumination colors and brightness for the unit's display and buttons.
Covers preparation, listening, and service information for the Pandora internet radio feature.
Guides connecting the SiriusXM tuner and initiating service for satellite radio.
How to select channels, use replay, and manage channel lock settings.
Covers subscription updates, signal status, and other advanced features.
How to select preset EQs and store custom sound settings for personal preference.
Covers fader, balance, bass, treble, subwoofer, and other audio parameters for sound tuning.
Information on playable discs, audio files, USB devices, and iPod/iPhone compatibility.
Covers JVC software, display info for sources, and product trademarks.
Provides remedies for common problems with the unit, iPod/iPhone, Pandora, and SiriusXM.
Instructions on how to reset the unit to factory defaults to resolve persistent issues.
Lists detailed technical specs for audio amplifier, tuner, CD player, USB, and general unit parameters.
Covers in-dash mounting, alternative installation, and basic connection steps for the unit.
Provides detailed wiring diagrams and lists necessary parts for installation.
Includes safety warnings, FCC rules, and compliance details for the device operation.
Lists product trademarks and provides guidance on proper electronic waste disposal.
