JOYROOM JR-CB3 Bluetooth Receiver User Manual
Product Overview
Basic Parameters
- Name: Wireless Receiver
- Model: JR-CB3
- BT Version: V5.3
- Audio Decoding: SBC
- Supported Modes: BT, TF card
- Transmission Range: ≥12m
- Frequency Response Range: 20Hz-20kHz
- Supported Protocols: HSP, HFP, A2DP, AVRCP
- Mic Sensitivity: -38±2dB
- Product Input: 5V 1A
- Input Port: USB+AUX
- Product Size: 40.5 mm x 45.7 mm x 11.4 mm
- Product Material: ABS+PC
- Net Weight: 40 g
Product Diagram
The JOYROOM JR-CB3 is a compact Bluetooth receiver. The device features a microphone, a volume up button, a previous track button, a TF card slot, a multi-function button for pause/play/call, and a next track button. It has a USB input port for power and a 3.5mm AUX output port for audio connection.
Getting Started
Pairing Operation
- Insert the USB connector of the receiver into a power supply. The light ring will illuminate, indicating the receiver is turned on.
- Plug the 3.5mm audio cable of the receiver into the 3.5mm port of the car audio system.
- Turn on your phone's Bluetooth function, search for the BT device "JR-CB3", and tap to pair and connect.
- After successful connection, you can use the receiver to enjoy music or answer calls.
Operation Instructions
Turn On/Off
Turn On: Connect the USB connector to a power supply. The light ring will illuminate, indicating the receiver is on.
Turn Off: The receiver will automatically power off if not connected for 5 minutes.
Music Function
Play/Pause: Click the [Play/Pause] button.
Next Track: Click the [Next] button.
Previous Track: Click the [Previous] button.
Volume Up: Click the [Volume Up] button.
Volume Down: Click the [Volume Down] button.
Voice Assistant
Activate voice assistant by pressing and holding the [Call] button for 2 seconds, then release after hearing a "di-di" sound.
Call Function
Answer Call: Click the [Call] button.
Reject Call: Press and hold the [Call] button for 2 seconds.
End Call: Click the [Call] button.
Redial Last Number: Double-click the [Call] button.
Factory Reset
To restore factory settings, press and hold the [Volume Up] and [Volume Down] buttons simultaneously for 5 seconds.
Indicator and Prompt Tones
Indicator Instructions
Turn On: The 6-color light ring remains continuously illuminated.
Prompt Tone Instructions
Turn On: A rising "doo-doo-doo" sound.
Turn Off: A falling "doo-doo-doo-doo" sound.
Connected: A "doo-der" sound.
Disconnected: A falling "doo-doo-doo" sound.
Call Reminder: The device synchronizes with the ringtone for iOS devices. For Android systems, it may not synchronize, or it will play intermittent "doo-" sounds.
Frequently Asked Questions (FAQ)
Q1: Why can't the receiver be connected?
A1: The receiver might be connected to another device. Disconnect it and try again. For iPhones, manually select "JR-CB3" in the Bluetooth settings. If issues persist, restore the receiver to factory settings.
Q2: Why is the sound too low?
A2: For Android users, ensure the "media channel" and "call channel" are enabled in the Bluetooth settings. For iPhone users, check for any maximum volume limits in the phone's settings. Volume synchronization may vary between devices; manually adjust the volume on your mobile phone, the receiver, and the car audio system.
Q3: Why can't the receiver be turned on when connected to power?
A3: Ensure the USB charging port and cable are properly connected. Use power adapters or car chargers that comply with national/regional safety standards. The product does not support the PD protocol; using PD power adapters may result in incompatibility.
Safety Criterion
- Please follow the instructions; do not disassemble or refit the product for any reason, as it may cause breakdown or fire.
- Do not immerse the product in any liquid or wash it with water.
- Please use adapters that conform to national/regional safety standards along with the included charging cable to power the product; otherwise, its battery may be damaged or cause safety problems.
- Use and store the product at normal temperatures; temperatures below 0°C or above 45°C are not permitted.
- Do not block the openings of the product, such as the charging port, audio port, and microphone.
- Do not use the product during thunderstorms, as it may lead to abnormal performance and signal interruption.
Warranty Information
Warranty Card
User Details:
- User Name: [User Name]
- User Tel: [User Tel]
- User Address (with postcode): [User Address]
Purchase Details:
- Purchase Date: [Purchase Date]
- Invoice No: [Invoice No]
- Dealer Name: [Dealer Name]
- Dealer Address (with postcode): [Dealer Address]
- Dealer Tel: [Dealer Tel]
Warranty Terms
A. Free Warranty Service: JOYROOM provides a 12-month free warranty for performance failures not caused by human error, starting from the date of purchase.
B. Warranty Exceptions: This warranty does not cover damage caused by human error, exceeding the warranty period, failure to provide valid proof of purchase, improper use or maintenance, unauthorized disassembly or repair, immersion in water, or force majeure events.
FCC Statement
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.
RF Exposure Information
Caution: Any changes or modifications not explicitly approved by the manufacturer may void your authority to operate this equipment.
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.
The device has been evaluated to meet general RF exposure requirements. This equipment should be installed and operated with a minimum distance of 0mm between the radiator and your body.
