
JCR311
AM/FM CD Receiver
To download a complete owner’s manual 
visit www.jensenmobile.com
or call customer service
1-888-921-4088
(Monday-Friday,9AM-5PM EST) 
Installation
Before You Start
• Consult a qualified technician for instructions. Jensen always recommends 
professional installation.
• Disconnect negative battery terminal.
• Remove trim ring from unit (if installed).
• Remove 2 transit screws located on top of the unit (if applicable).
• Insert the removal keys, and remove the mounting sleeve from the head unit.
Note: Most vehicles require an installation kit, wiring harness and/or antenna 
adapter (all sold separately) to properly install the head unit in the vehicle.
Installation Process
1. Carefully remove the existing head unit.
2. Connect wiring harness. Consult a qualified technician if you are unsure.
3. Mount the head unit using the mounting sleeve or ISO brackets (depending
  on your vehicle’s dashboard).
4. Connect wiring harness and antenna. Test the head unit for correct operation.
5. Slide into mounting sleeve to secure, or mount the ISO brackets to the 
vehicle.
6. Snap trim ring into place.
Wiring Connections
The chart below the connection for each wire in the wiring harness.
Color Connection
Red 12V Ignition / Accessory
Yellow 12V Battery / Memory
Black Ground
Blue Power Antenna / Amp Turn-on
White Left Front (+)
White/Black Left Front (-)
Gray Right Front (+)
Gray/Black Right Front (-)
Green Left Rear (+)
Green/Black Left Rear (-)
Violet Right Rear (+)
Violet/Black Right Rear (-)
When a suitable ground wire is
not present in the vehicle wiring
harness, connect the black ground
wire to the vehicle chassis.
When replacing the fuse, make 
sure new fuse is the correct type 
and amperage. Using an incorrect 
fuse could damage the radio. 
Tip:
Fuse:
Installation
Mounting the Head Unit: 
Typical DIN mounting
Step 1: 
Insert the mounting 
sleeve into the 
installation kit or 
dashboard.
Step 2: 
Bend multiple 
mounting tabs around 
the mounting sleeve 
until the mounting 
sleeve is secure.
Step 3: 
Connect all wiring 
harnesses and slide 
the head unit into the 
mounting sleeve until 
it clicks into place. 
Mounting the Head Unit:  
ISO mounting
Using the existing 
brackets or the brackets 
supplied with the 
installation kit, mount the brackets to 
the sides of the head unit with the screws 
supplied with the head unit.  
Single DIN
Dashboard or Installation Kit
Decorative
Mounting Tabs
Single DIN
Dashboard or Installation Kit
Head Unit
Single DIN
Bezel
Single DIN
New
Radio
Dashboard or 
Installation Kit
Mounting Sleeve
Mounting Sleeve
Mounting Sleeve
Metal Bracket(Not supplied)
Existing
Brackets
General Operation
Power On/Off
Changing Modes 
Volume
Auxiliary Inputs
Setting the Clock
Display
Audio / Menu
Dimmer Setting In the Menu, press the volume knob to select Dimmer 
Press the 
turn unit off.
Press MODE to select between AM/FM, CD Player, 
AUX, and USB.
Modes of operation are shown in the display.
Adjust volume using volume knob.
Mute
Press 
listening at the previously selected volume.
Insert a 3.5mm cable in the units front AUX port. 
Reset
Press the RESET button to reset the unit back to the 
factory settings if abnormal operation occurs.   
Reset button is located under the volume knob of the front panel.
With the unit on, press and hold DISP until the clock begins 
to flash. Press TUNE<< to adjust the hours, and TUNE >> to 
adjust the minutes. Release DISP to save the selected time.
Press DISP to toggle display between various displayed 
information.
Press and hold Volume Knob to access to select between 
the audio functions or menu functions. Press the volume knob to 
select functions and rotate it left/right to adjust or activate the 
desired function.
and rotate it left/right to adjust or activate Dimmer 
H/M/L to control the brightness for LCD and button.
 button to turn the unit on. Press  again to 
 to silence the audio. Press  again to resume 
Band
Storing Presets
Recalling Presets
Automatically Store
AM/FM Tuner Operation
Press and hold for 2 secs and 
release it to auto seek to previous or next strong station.
Press  momentarily to change radio 
frequency down or up one step at a time.Press and hold
release it to stop on the desired station.
Press BAND to select between FM1, FM2, FM3, AM1 
and AM2 bands. Up to six presets can be programmed 
for each band, enabling up to 18 FM stations and 12 AM 
stations to be stored in memory.
Up to 18 FM and 12 AM stations can be stored. To store 
a station, select the desired band and station. Press and 
hold the desired preset button (1-6) for more than two 
seconds. When stored, the preset number will appear in 
the display.
Preset stations can be recalled any time by pressing the 
corresponding preset button.
Touch PS to recall each preset station that has been 
stored in memory for each band. 
(Available with the Jensen Smart Remote App only)
for 3 secs to advance quickly and 
MENU
,then press DISP
Finally, press DISP to confirm.
SONG
Finally, press DISP to confirm.
Finally, press DISP to confirm.
song.
Playing MP3 Files 
Track Select
Fast Forward and 
Reverse
Pause 
Repeat
Random
Intro
MP3 Operation 
To play MP3, insert a data CD/USB,  containing MP3.
Press TUNE  
Press TUNE 
song. Pressing TUNE 
the previous song.
Press and hold TUNE  
or reverse a track.
Press l/ II to temporarily stop playback. 
Press l/ II again to resume playback. 
Press RPT to enter the Repeat menu, then turn the volume  
knob to select one of the following options:
• ALL - Plays all tracks on disc or device.
• SONG - Continuously repeats selected song.
• FOLDER - Continuously repeats all files in folder.
Finally, press DISP to confirm.
Press RDM to enter the Random menu, then turn the 
volume knob to select one of the following options:
• OFF - Cancels RDM function.
• ALL - Plays all tracks in random order.
• FOLDER - Plays all tracks in folder in random order.
Finally, press DISP to confirm.
Press INT to enter the Intro menu, then turn the volume  
knob to select one of the following options:
 - Cancels the INT function.
• OFF
• ALL - Plays first 10 seconds of each track.
• FOLDER - Plays first 10 seconds of each track in the 
selected folder.
Finally, press DISP to confirm.
 to skip to the beginning of the next song. 
ll
 to return to the beginning of the current 
nn
 again skips to the beginning of 
nn
 or TUNE 
ll
 to fast forward
nn
Preparation
Pairing a New 
Device
Voice Activation 
Bluetooth® Operation
Before using a Bluetooth device, it must be paired and 
connected. Ensure that Bluetooth is activated on your 
device before beginning the pairing process. 
The head unit broadcasts the pairing signal constantly 
when no devices are connected. Complete the pairing 
sequence from your Bluetooth device. Refer to the 
owner’s manual for your device for more details.
The device name is “JENSEN BT” 
Note: The head unit can be in any mode of operation 
when pairing is performed.
Voice Activation Operation
Bluetooth should be paired between your smartphone and the receiver. 
Press the voice activation button       , and the receiver will switch 
into Bluetooth mode, This will activate Siri 
your smartphone. You will need to manually switch back to the 
previous or desired mode once this operation is terminated.
®
 or Google AssistantTM on 
APP Operation
The Jensen Smart App is the ultimate wireless remote control for your 
receiver. You can download Jensen Smart app from Apple App Store or 
Google Play Store and install it on your smartphone or tablet.
Please scan the following QR code to download the Jensen J-Link P2 APP to 
your smart phone. 
 Namsung America Inc.
 Namsung America Inc.
be found via www.jensenmobile.com. 
4. For more information and for the location of the nearest authorized service center 
  please contact us by one of the following methods: 
  • Call us toll-free at (888) 921-4088 
   (Monday-Friday, 9:00 am,to 5:00 pm ,EST) 
  • E-mail us at cs@jensenmobile.com 
Specific license conditions and copyright notices for the software can
FCC Compliance
This device complies with Part 15 of the FCC Rules. Operation is subject to the following 
two conditions: 
(1) this device may not cause harmful interference, and 
(2) this device must accept any interference received, including interference that may 
cause undesired operation.
Warning: Changes or modifications to this unit not expressly approved by the party 
responsible for compliance could void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B 
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide 
reasonable protection against harmful interference in a residential installation. This 
equipment generates, uses and can radiate radio frequency energy and, if not installed 
and used in accordance with the instructions, may cause harmful interference to radio 
communications. However, there is no guarantee that interference will not occur in a 
particular installation. If this equipment does cause harmful interference to radio or 
television reception, which can be determined by turning the equipment off and on, the 
user is encouraged to try to correct the interference by one or more of the following 
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the 
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
www.jensenmobile.com 
©2021 Namsung America Inc. 
NSC0121-V01