J
Jennifer MurphyAug 28, 2025
What does 'UPGRADE APP' mean on my JVC KD-R681?
- JJames ChavezAug 28, 2025
If “UPGRADE APP” appears on your JVC Car Receiver, make sure you have installed the latest version of the Pandora application on your device.
To Next PageTo Next PageWhat does 'UPGRADE APP' mean on my JVC KD-R681?
If “UPGRADE APP” appears on your JVC Car Receiver, make sure you have installed the latest version of the Pandora application on your device.
What to do if “MISWIRING CHECK” appears on JVC Car Receiver?
If the JVC Car Receiver displays “MISWIRING CHECK”, switch the power off and ensure the speaker wire terminals are properly insulated. Then, turn the power back on.
How do I fix source selection issues on my JVC Car Receiver?
If you cannot select a source on the JVC Car Receiver, check the [SOURCE SELECT] setting.
How to improve radio reception on JVC KD-R681?
To improve radio reception on your JVC Car Receiver, ensure the antenna is firmly connected.
What causes intermittent playback on JVC Car Receiver?
To address intermittent playback or sound skipping on your JVC Car Receiver, turn off the power saving mode on the Android device.
How to fix JVC KD-R681 when no sound can be heard?
Ensure the volume is at an appropriate level and verify all cords and connections are secure.
Why is the playback order wrong on my JVC KD-R681?
The playback order on the JVC Car Receiver is determined by the file name (USB) or the order in which files were recorded (disc).
Why is the elapsed playing time incorrect on my JVC KD-R681?
The elapsed playing time displayed on the JVC Car Receiver depends on the recording process.
Why is the radio reception poor on my JVC KD-R681?
If you are experiencing poor radio reception with your JVC Car Receiver, make sure the antenna is firmly connected.
How to fix 'MISWIRING CHECK' error on JVC Car Receiver?
If the message “MISWIRING CHECK” appears on your JVC Car Receiver, turn the power off. Check to ensure the terminals of the speaker wires are insulated properly, and then turn the power back on.
General| CD Playback | Yes |
|---|---|
| USB Input | Yes |
| Bluetooth | Yes |
| Pre-Output Voltage | 2.5V |
| Frequency Response | 20Hz - 20kHz |
| USB Standard | USB 2.0 |
| USB Current Supply | 1A |
| File System | FAT16, FAT32 |
| MP3 Decoding | Yes |
| WMA Decoding | Yes |
| AM Frequency Range | 530 - 1710 kHz |
| AUX Input | Yes |
| MP3 Playback | Yes |
| WMA Playback | Yes |
| Remote Control | Yes |
| Detachable Faceplate | Yes |
| Steering Wheel Control Compatible | Yes |
| Channels | 4 |
| Power Output | 4 x 50W |
| RMS Power | 22W x 4 |
| Tuner | FM/AM |
| Display | LCD |
| Pre-Output Impedance | 10 k ohms |
| MP3 Bit Rate | 32 - 320kbps |
| WMA Bit Rate | 32 - 192kbps |
| FM Frequency Range | 87.5 - 108.0MHz |
Key information to ensure proper use and safety, including warnings and cautions.
Procedure for setting the unit's clock and date.
How to configure essential system and source settings.
Instructions for searching and tuning radio stations.
How to save favorite stations and recall them.
Configuration for radio timer, auto-station memory, and local seek.
How to begin playback from various connected media sources.
Operations for playback, track skipping, repeat, and random play.
Methods for selecting files from folders or using quick/alphabetical search.
Selecting preset EQs or customizing sound with EASY EQ and PRO EQ.
Configuring subwoofer levels, LPF, phase, and speaker output.
Selecting speaker output based on connection type (lineout or speaker leads).
Common issues and solutions for audio, reception, and static noise.
Fixes for playback, connection, and detection problems with media devices.
Important safety warnings and precautions before installation.
Diagram and instructions for connecting the unit's wiring harness.
