Introduction
This user manual provides comprehensive instructions for the installation, operation, and maintenance of your Jensen JCR311 Car Stereo Receiver. Please read this manual thoroughly before using the product to ensure proper functionality and safety.

Front view of the Jensen JCR311 Car Stereo Receiver, showing the LCD display, control knob, and various buttons.
Key Features
- SIRI or Google Voice Assist Button: Activate your smartphone's voice assistant (Siri or Google) for hands-free commands including music playback, podcasts, audiobooks, and navigation.
- CD, USB & MP3 Playback: Enjoy audio from the built-in CD player, front panel USB port (with charging capability), or MP3 player with ID3 tag support.
- Built-in Bluetooth: Seamlessly pair with Bluetooth devices for hands-free calling and audio streaming.
- LCD High Resolution 10 Character Display: Clear and responsive white-on-black display for easy visibility and control.
- Exceptional Music Streaming: Stream music from popular apps like Pandora, Spotify, and iHeartMedia via Bluetooth or the 3.5mm Auxiliary port.
- AM/FM Radio: Features 30 station presets, 7 preset EQ curves, and 2 band tone control.
- Power Output: Generates 200 Watts of Peak Power.
- Preamp Outputs: Includes two pairs of RCA Preamp Outputs (Front/Rear) for amplifier connection.

Overview of key features including J-Link App compatibility, Push-to-Talk voice access, CD playback, 200 Watts peak power, USB charging, and auxiliary input.
What's in the Box
The Jensen JCR311 package includes the following components:
- Jensen JCR311 Car Stereo Receiver
- Wiring Harness
- Radio Cage

Image showing the wiring harness and radio cage included with the unit.
Setup and Installation
The JCR311 is designed for single DIN installation. Professional installation is recommended. Ensure the vehicle's battery is disconnected before beginning installation.
Physical Installation
- Mount the radio cage securely into your vehicle's dashboard opening.
- Connect the wiring harness to the vehicle's existing wiring, matching colors and functions as per your vehicle's wiring diagram.
- Connect the antenna cable to the radio antenna input on the rear of the unit.
- If using external amplifiers, connect the RCA preamp outputs to your amplifier's inputs.
- Slide the JCR311 unit into the mounted radio cage until it locks into place.

Rear view of the JCR311 unit, highlighting the RCA input and radio antenna connection points.

Side view illustrating the 5.9-inch chassis depth of the JCR311 for installation planning.

Example of the Jensen JCR311 installed within a vehicle's dashboard.
Operating Instructions
Power On/Off
Press the POWER button (usually the volume knob) to turn the unit on or off.
Source Selection
Press the MODE button to cycle through available audio sources: AM/FM Radio, CD, USB, Bluetooth, and Auxiliary Input.
Bluetooth Operation
- Pairing: Ensure Bluetooth is enabled on your mobile device. Select "JCR311" from the list of available devices. A confirmation tone will sound upon successful pairing.
- Hands-Free Calling: When a call comes in, the unit will display the caller ID. Press the CALL button (phone icon) to answer. Press again to end the call.
- Audio Streaming: Once paired, audio from your device will stream wirelessly to the JCR311. Use the unit's controls or your device to manage playback.

The Bluetooth feature allows for wireless audio streaming and hands-free calling.
Voice Assistant (SIRI/Google)
Press the dedicated VOICE ASSIST button (often marked with a microphone icon) to activate your smartphone's voice assistant. Speak your commands clearly after the prompt.

The Push-to-Talk Voice Access feature allows activation of smartphone assistants directly from the receiver.

Icon representing the Push-to-Talk Voice Access functionality.
J-Link App Control
Download the J-Link App from your smartphone's app store. Once installed and connected via Bluetooth, the app allows you to control various receiver functions including settings, song selection, station tuning, and volume directly from your smartphone.

The J-Link App provides smartphone control over the receiver's settings and playback.

A visual representation of the J-Link App in use, controlling the stereo from a smartphone.
CD/USB/MP3 Playback
- CD: Insert a CD into the disc slot. Playback will begin automatically. Use the TRACK UP/DOWN buttons to skip tracks.
- USB: Insert a USB drive into the front USB port. The unit will automatically switch to USB mode and begin playback of compatible audio files. The USB port also provides charging for your device.
- MP3: MP3 files on CD or USB will display ID3 tag information (song title, artist, album) on the LCD screen.

The unit supports CD playback for your audio collection.

Front panel USB and Auxiliary inputs provide versatile connectivity options.
AM/FM Radio
- Tuning: Press the TUNE UP/DOWN buttons to manually tune to stations. Press and hold for automatic seek tuning.
- Presets: Store your favorite stations by tuning to the desired frequency, then pressing and holding one of the numbered preset buttons (1-6) until a beep is heard.
- EQ Settings: Access the equalizer settings through the menu to select from 7 preset EQ curves or adjust the 2 band tone control.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the unit's surface. Do not use abrasive cleaners or solvents.
- Disc Care: Handle CDs by their edges. Keep them clean and free of scratches.
- General Care: Avoid exposing the unit to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power | Blown fuse; incorrect wiring; vehicle battery issues. | Check vehicle's fuse box and unit's fuse. Verify wiring connections. Check vehicle battery. |
| No Sound | Volume too low; mute activated; speaker wiring issues; incorrect source selected. | Increase volume. Deactivate mute. Check speaker connections. Select correct audio source. |
| Bluetooth Pairing Fails | Device not in pairing mode; unit not in pairing mode; interference. | Ensure both devices are in pairing mode. Move closer to the unit. Restart both devices. |
| CD/USB Playback Error | Damaged disc/file; incompatible format; dirty disc/USB. | Try a different disc/USB. Ensure files are compatible. Clean disc. |
Specifications
| Attribute | Detail |
|---|---|
| Model Number | JCR311 |
| Product Dimensions | 9 x 4 x 10 inches (4"D x 9"W x 10"H) |
| Chassis Depth | 5.9 inches |
| Item Weight | 3.3 pounds |
| Output Power | 200 Watts Peak (50 Watts x 4) |
| Connectivity Technology | Bluetooth, USB, Auxiliary (3.5mm) |
| Display Type | LCD 10 Character Display |
| Preamp Outputs | Two Pair RCA (Front/Rear) |
| Radio Tuner | AM/FM with 30 Station Presets |
| EQ | 7 Preset EQ Curves, 2 Band Tone Control |
Warranty and Support
The Jensen JCR311 Car Stereo Receiver comes with a standard 2-year warranty. An extended 3-year warranty is available upon product registration on Jensenmobile.com.
For technical support, troubleshooting assistance, or warranty claims, please visit the official Jensen website or contact their customer service department.

Information regarding Jensen's commitment to quality and warranty details.





