Brand: JVC
Category: Portable Navigation Device
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for KW-NT1
Uploaded: Nov. 21, 2025, 7:33 p.m.
Warranty Information
The manual contains information regarding product specifications and operation, but no specific warranty period is mentioned.
Basic Operations
- Turning on the power: Turn on the ignition switch. The unit powers on and displays an opening screen before showing the language selection screen.
- Language Selection: Choose your preferred language for display and voice guidance.
- Installation Settings: Adjust country, time zone, summer time, reverse signal polarity, and camera input settings. These can also be changed later via the
menu. - Displaying monitor setting bars: Press DISP to show or hide setting bars. Hold DISP to access brightness and screen off options.
- Switching screens: Use the AV MAP/AV OFF button to switch between map and AV screens.
- Map Navigation: Change map scale, scroll the map, display current position, and change map view (2D Heading Up, 3D Map, 2D North Up).
- Registering Points: Save your home and favourite points by touching their location on the map.
- Searching for a place: Search by address, telephone number, coordinates, POI, or quick search.
- AV Operations: Select playback source, listen to the radio, operate discs, and use SD/USB devices.
Troubleshooting and error codes
| Symptom | Remedies/Causes |
| General | |
|---|---|
| No sound from speakers. | Adjust volume to optimum level. Check cords and connections. |
| Screen is not clear and legible. | Direct sunlight on the windshield may cause this. Adjust monitor brightness. Detach and reattach the monitor panel. |
| Radio does not operate at all. | Detach and reattach the monitor panel. Keep hands and the touch panel clean and dry. Eliminate static electricity and keep magnetic objects away. Let the unit stabilize to room temperature. A rubber mat on the floor may cause this symptom. |
| Touch panel does not respond correctly. | Keep hands and touch panel clean and dry. Eliminate static electricity and keep magnetic objects away. Let the unit stabilize to room temperature. |
| Guidance or AV source sound is difficult to hear. | Interfering ambient noise. Increase <Adaptive Volume>. Reset calibration data. |
| <Adaptive Volume> setting has no effect. | Reset calibration data. |
| "System start error." | Detach and reattach the monitor panel. |
| "No Signal" | Change the source. Play back from an external device connected to AV-IN or VIDEO/LINE IN. Check cords and connections. Input signals are too weak. |
| Navigation | |
| Guidance does not start. | System is calibrating. Wait for calibration to finish. Guidance will start upon completion. |
| Cannot use some AV source functions on the map screen. | On the map screen, only limited functions of the current source are available. Press AV MAP to control the source on the AV screen. |
| Route calculation seems to have stopped. | Route calculation may take time depending on the route. Wait a moment. |
| Navigation voice is not heard from the speakers. | Adjust guidance volume to the minimum level. Adjust to the correct level. |
| Voice guidance does not come from the driver's side speaker. | Change the <Output> setting. |
| Guidance is sometimes incorrect. | Reverse/speed signal wires are not connected. Connect them correctly. |
| POI found using <Poi Name> in <Destination Menu> is not in the chosen city. | This is not a malfunction. The system may search for locations around the chosen city. |
| Current position on the map remains incorrect for over 30 minutes. | Check the following wire connections: GPS antenna, Speed signal wire. If a disconnected wire is found, reconnect it. If no connection problems are found, reset calibration data. |
| Distance and estimated guidance time are not accurate after tire replacement/rotation. | Perform <Reset Calibration Data> to clear accumulated calibration data. |
| "Check GPS Antenna" | Check GPS antenna connection. |
| “Acquiring GPS Signal” | Acquiring GPS signals. Wait until signal reception is completed. GPS signals cannot be received. Move to a location where the system can receive GPS signals. |
| "Route calculation failed." | The destination/waypoint is too far from existing routes. Choose another destination/waypoint near a road. |
| "Route calculation interrupted: the destination is too far." | The destination/waypoint is too far from the current position. Choose another destination/waypoint closer to the current position. |
| “Specified destination not found.” | No valid information found in the database. Search for another location. Press [ ] and search again with different conditions. |
| FM/AM | |
| "No traffic information available." | No TMC information is currently available. Try one of the following: Move to an area where you can receive TMC service. There is no TMC information on your route. Display a list of all TMC information. |
| "Selected coordinates out of zone. Re-enter input." | Entered coordinates are not available. Press [OK] and re-enter the coordinates. |
| Automatic preset SSM does not work. | Manually memorize stations. |
| Static noise when listening to the radio. | Connect the antenna securely. |
| Discs in general | |
| Disc cannot be recognized or played. | Force eject the disc. Unlock the disc. Insert a finalized disc. Finalize discs with the recording device. |
| Recordable/re-writable discs cannot be played. | Insert the disc correctly. The file format is not supported by the device. |
| Tracks on recordable/re-writable discs cannot be skipped. | Stop playback when driving on bumpy roads. Change the disc. |
| Playback does not start. | The parking brake wire is not connected correctly. Connect it correctly. |
| Sound and images are sometimes interrupted or distorted. | Stop playback when driving on bumpy roads. Change the disc. |
| No playback image appears and a parking brake warning message appears even when the parking brake is engaged. | The parking brake wire is not connected correctly. Connect the video cord correctly. Select the correct input on the external monitor. |
| No image appears on the external monitor. | Insert the disc upside down. Change the disc. The disc has no playable files. |
| "Read Error" | No disc inserted. Insert a disc or select another playback source. |
| "No Disc" | Force eject the disc. Check the disc. |
| “Ejection Problem” | Force eject the disc. |
| “Loading Problem” | Verify the disc. |
| “Region code error” | Region code is incorrect. |
| DVD/CD, DivX/MPEG1/MPEG2/MP3/WMA/WAV | |
| Disc cannot be played. | Change the disc. Register tracks using a compatible application. Add the appropriate extension code for file names. |
| Noise is produced. | The track played is not in a playable file format. Switch to another track. |
| Tracks are not played as desired. | Playback order may differ from other players. This sometimes occurs during playback and is caused by how tracks were recorded. The track cannot be played. |
| Playback time elapsed is incorrect. | The track played is not in a playable file format. Switch to another track. Playback order may differ from other players. |
| "Error" | The track cannot be played. |
| Noise is produced. | The track played is not in a playable file format. Switch to another track. |
| Tracks are not played as desired. | Playback order may differ from other players. |
| Correct characters are not displayed (e.g., album name). | For available characters, see page 12. |
| During track playback, sound is sometimes interrupted. | Tracks are not copied correctly to the SD card/USB device. Recopy tracks and try again. |
| "No File” | SD card/USB device has no playable files. Change SD card/USB device. |
| "No SD Card" | No SD card inserted. Insert an SD card or select another source. |
| "No USB Device" | No USB device connected. Connect a device or select another source. |
| "Read Error" | File was not formatted correctly. |
| “Error” | Track cannot be played. |
| USB | |
| DivX/MPEG1/MPEG2/MP3/WMA/WAV playback issues | Please refer to the specific sections for DVD/CD, DivX, MPEG, MP3, WMA, WAV for detailed troubleshooting. |
| iPod/iPhone | |
| iPod/iPhone cannot be powered on or does not operate. | Check connection. Charge battery. Verify if <Ensemble Tête> or <iPod> is correctly selected. Reset iPod/iPhone. |
| Sound is distorted. | Turn off the equalizer on this unit or iPod/iPhone. |
| Playback pauses. | The headphone was disconnected during playback with <iPod Control Mode> set to <iPod>. Restart playback. |
| No operation is available during playback of a track with an illustration. | It takes some time to load an animation. Perform the operation once the illustration is loaded. |
| Video image is not reproduced. | Check the connection of the USB audio and video cable. |
| "Disconnected" | Check the connection. |
| Bluetooth | |
| Bluetooth portable phone does not detect the device. | This car radio can connect to a portable Bluetooth phone simultaneously. While connected to one device, this unit cannot be detected by another peripheral. Disconnect the currently connected device and search again. |
| Device does not detect Bluetooth device. | Check the Bluetooth setting of the device. |
| There is an echo or noise. | Adjust microphone position. |
| Phone sound quality is poor. | Reduce the distance between this unit and the portable Bluetooth phone. Move the car to a location where you can get a better reception signal. |
| Rear View Camera | |
| Rear view screen does not appear when the shift lever is in reverse (R). | Check the <Camera Input> setting. Check the connection. |
| "No Signal" | Check the connection. |
| AV-IN/Front AV-IN | |
| "No Signal" | Turn on the video device if it is not already on. Connect the video peripheral correctly. Check if <Front AV Input> or <AV Input> settings are correct. |