REAKOSOUND 7157B
REAKOSOUND 7 Inch MP5 Player 7157B User Manual
Model: 7157B
Product Overview
The REAKOSOUND 7 Inch MP5 Player 7157B is a versatile car multimedia system designed to enhance your in-car entertainment and connectivity. It features a 7-inch touchscreen display and supports various audio and video formats. Key functionalities include FM/RDS radio, Bluetooth for hands-free calls and music streaming, USB and TF card playback, Android Link Mirror, and rear camera input.

Image: Front view of the REAKOSOUND 7 Inch MP5 Player 7157B, showing the main user interface with icons for Home, FM, Music, Movie, Photo, Explorer, Bluetooth, AUX, and Setting.
Setup and Installation
This section provides instructions for the proper installation and initial setup of your MP5 player. Professional installation is recommended.
Dimensions and Components

Image: Rear view of the MP5 player showing various ports and connectors, along with a detailed wiring diagram for power, speakers, and auxiliary inputs. Dimensions are indicated as 178mm width, 100mm height, and 65mm depth.
The product dimensions are approximately 18 x 6.5 x 10.5 cm. Ensure your vehicle's dashboard opening is compatible with these dimensions. The package includes the main unit, ISO power cable, and a user manual.

Image: Diagram of the MP5 player's front panel, highlighting numbered components such as IR Remote Control Receiver, Microphone, Volume buttons, Mute, System Reset, Card Slot, Audio Auxiliary input, and USB Port.
Wiring Connections
Refer to the wiring diagram provided in the image above for correct connections. Ensure all connections are secure to prevent malfunction.
- ISO Power Interface: Connect to your vehicle's power harness.
- Speaker Outputs: Connect to your vehicle's speakers (Front Left, Front Right, Rear Left, Rear Right).
- RCA Audio Output: For connecting to external amplifiers.
- Video Output: For connecting to external displays.
- Reversing Camera Input: Connect your rear view camera here.
- Radio Antenna Interface: Connect your vehicle's radio antenna.
- USB Port: For USB devices and charging.
- TF Card Slot: For memory cards.
Operating Instructions
This section details the various functions and how to operate your REAKOSOUND MP5 Player.
Basic Functions
- Power On/Off: Press the power button on the front panel or remote control.
- Volume Control: Use the volume buttons on the front panel or remote.
- Mute: Press the Mute button to silence audio.
- System Reset: Use a thin object to press the reset button if the system becomes unresponsive.
Radio (AM/FM/RDS)
The unit supports AM/FM radio with RDS functionality. You can auto-search and store radio stations.

Image: Illustrates the Bluetooth connectivity, FM radio interface showing frequency tuning, and USB/TF card playback interface with song list.
Bluetooth Functionality
Connect your smartphone via Bluetooth for hands-free calling and audio streaming.
- Pairing: Enable Bluetooth on your phone and search for "REAKOSOUND" (or similar device name). Select to pair.
- Hands-Free Calls: Answer, reject, or redial calls directly from the unit's touchscreen.
- Bluetooth Music: Stream audio from your paired device.
USB / TF Card Playback
Insert a USB drive or TF card into the designated slots to play audio and video files.
- Supported Audio Formats: MP3, WMA, WAV, FLAC, APP.
- Supported Video Formats: RM, RMVB, VOB, DivX, AVI, ASF.
Mirror Link (Android Only)
Connect your Android phone via USB cable to mirror its screen on the MP5 player. This allows you to control your phone's functions directly from the unit's touchscreen.

Image: Demonstrates the Mirror Link feature showing a smartphone screen mirrored onto the car stereo display, and the Reversing Camera function displaying a rear view with parking guidelines.
Reversing Camera Function
When a rear camera is connected and the vehicle is in reverse, the display will automatically switch to the camera view, aiding in safer parking.
1080P Video Playback
The unit supports high-definition 1080P video playback, allowing you to enjoy movies and videos on the 7-inch screen.

Image: Shows the MP5 player displaying a high-definition video, illustrating its 1080P video playback capability.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your MP5 player.
- Cleaning: Use a soft, dry cloth to clean the screen and unit. Do not use abrasive cleaners or solvents.
- Temperature: Avoid exposing the unit to extreme temperatures, direct sunlight for prolonged periods, or high humidity.
- Ventilation: Ensure proper ventilation around the unit to prevent overheating.
Troubleshooting
If you encounter issues with your MP5 player, refer to the following common troubleshooting steps.
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power | Incorrect wiring; Blown fuse; Vehicle power issue. | Check power connections; Inspect and replace fuse (10A); Consult a professional for vehicle power diagnosis. |
| No Sound | Volume too low; Mute activated; Incorrect speaker wiring. | Increase volume; Deactivate mute; Verify speaker connections. |
| Bluetooth Not Connecting | Device not in pairing mode; Incorrect pairing procedure; Interference. | Ensure phone's Bluetooth is on and discoverable; Re-attempt pairing; Move closer to the unit. |
| Touchscreen Unresponsive | System freeze. | Perform a system reset using the reset button. |
| Mirror Link Not Working | Incorrect USB cable; Phone settings; Not an Android device. | Use a high-quality USB data cable; Check phone's USB debugging/connection settings; Note: Mirror Link is for Android only. |
Specifications
Detailed technical specifications for the REAKOSOUND 7 Inch MP5 Player 7157B.
| Feature | Detail |
|---|---|
| Model Number | 7157B |
| Screen Size | 7 Inch (18 cm) |
| Product Dimensions | 18 x 6.5 x 10.5 cm |
| Weight | 900 g |
| Connectivity Technology | RCA, Bluetooth |
| Controller Type | Android (for Mirror Link) |
| Special Feature | Touchscreen |
| Compatible Devices | Smartphone |
| Connector Type | USB, 3.5mm Jack |
| Audio Output Mode | Stereo |
| Surround-Sound Channel Configuration | 2.0 |
| Video Encoding | DIVX |
| Color | Black |
| Manufacturer | Reakosound |
Warranty and Support
For warranty information, please refer to the documentation included with your purchase or contact your retailer. Standard manufacturer warranty terms apply.
For technical support or further assistance, please contact REAKOSOUND customer service through their official channels or the seller from whom you purchased the product.
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