BQCC D5401 4.1-inch Car MP5 Player

1. Introduction

Thank you for choosing the BQCC D5401 4.1-inch Car MP5 Player. This device is designed to provide a comprehensive in-car entertainment and communication experience, featuring FM radio, Bluetooth connectivity, USB/TF card playback, and support for reversing cameras and steering wheel controls. Please read this manual thoroughly before installation and operation to ensure proper use and to maximize your enjoyment of the product.

Key Features:

• 4.1-inch Touch Screen Display
• FM Radio (87.5~108.0MHz)
• Bluetooth 5.0 for hands-free calling and music streaming
• USB 2.0 and TF Card support for audio/video/picture playback
• AUX Input (front and rear)
• Reversing Camera Input (optional camera required)
• Steering Wheel Control Learning Function
• TYPE-C Charging Interface
• Colorful Lights
• Wiring Protection (prevents burning from incorrect power connection)
• Video Input and Output

2. Setup and Installation

2.1. Unpacking and Accessories

Before proceeding with installation, please ensure all accessories are present:

• 1x Host Unit (Car MP5 Player)
• 1x Instruction Manual
• 1x Power Cord
• 1x Card Remote Control
• Disassembly Keys

2.2. Pre-Installation Test

It is crucial to test the unit before full installation to prevent issues. Due to potential impacts during transit, the product should be tested for functionality first.

1. Connect the red and yellow wires of the power cord together to the positive terminal of a 12V DC car battery.
2. Connect the black wire of the power cord to the negative terminal of the battery.
3. Wait for 10 seconds.
4. Press each button on the unit to verify it powers on and functions normally. If it starts, it's ready for installation. If not, re-check connections and refer to the troubleshooting section.

2.3. Installation Steps

1. Separate the iron frame from the host unit.
2. Insert the iron frame into the car radio installation window.
3. Secure the iron frame to the car using a screwdriver.
4. Slide the main unit into the iron frame until it snaps securely into place.

2.4. Wiring Instructions (ISO Plug)

The ISO plug has two versions for the B jack (B① or B②). Ensure correct connections to avoid damage.

Important Wiring Notes:

• The yellow (B+) and red (ACC) wires must both receive 12V positive power simultaneously for the unit to turn on.
• The yellow (B+) wire provides constant power for memory function.
• Speaker cables (8 total) must not be grounded, shared, or touch other lines. Incorrect speaker wiring can lead to no sound, distorted sound, or unit overheating.
• This unit features wiring protection: incorrect power supply connection will automatically shut down the power to prevent burning.

2.5. RCA Plug Description

The unit features RCA ports for audio/video input and output. There are two versions of the heat sink/RCA layout (4-hole or 6-hole), depending on the specific product received.

2.6. Reversing Camera Installation

The unit supports a reversing camera (optional, not included). Connect the camera according to the diagram below.

When the vehicle is in reverse gear, the unit will automatically switch to the reversing image.

3. Operating Instructions

3.1. Panel Introduction

The front panel features various controls and ports for easy operation.

3.2. UI Interface Display

The 4.1-inch touch screen provides an intuitive user interface for various functions.

3.3. Remote Control

The unit comes with a card remote control for convenient operation. The style of the remote control may vary slightly.

3.4. Basic Functions

• FM Radio: Built-in FM radio module with frequency range 87.5~108.0MHz.
• Bluetooth Function: Version 5.0 (default name: SWL-BT) for hands-free calling and BT music playback.
• Media Playback: Supports MP3/WMA/WAV/APE/FLAC audio formats and RM/RMVB/AVI/MP4/MKV/3GP video formats from USB disk or TF card. JPG/BMP/PNG image formats are also supported.
• AUX Function: Front and rear AUX inputs for external audio devices.
• Steering Wheel Learning: Allows setting steering wheel buttons as function keys for easier control while driving.
• TYPE-C Charging: Dedicated TYPE-C charging interface on the panel.

4. Maintenance

To ensure the longevity and optimal performance of your BQCC D5401 Car MP5 Player, follow these maintenance guidelines:

• Keep the unit clean by wiping it with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
• Ensure proper ventilation around the unit to prevent overheating.
• Avoid exposing the unit to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
• The unit features wiring protection to prevent damage from incorrect power connections. However, always double-check wiring before powering on.

5. Troubleshooting

This section addresses common issues you might encounter and provides solutions.

5.1. Cannot Boot Normally

1. Wiring Check: Ensure the yellow (B+), red (ACC), and black (GND) wires are correctly connected. Yellow to positive, red to key control, black to negative. Incorrect or incomplete connections will prevent booting.
2. Fuse Check: If the unit doesn't boot despite correct wiring, check the fuse on the yellow wire. If the fuse is intact, try twisting the yellow and red wires together, then turn the key and press the power button.
3. Short Circuit Protection: If fuses repeatedly burn out, it indicates a short circuit in the unit's protection circuit. This requires professional service.
4. Original Car Wiring: Ensure the original car wiring is compatible and correctly matched. Do not directly plug the original car plug into the new unit if it's not designed for it.

5.2. Automatic Shut-down

1. Cable Error: If the blue (automatic antenna power supply) cable is connected to the unit's power cable, it may cause automatic shutdown. Correct the wiring.
2. Unstable Voltage: Test the unit with a stable 12V-5A power supply. If it still shuts down, the unit may be faulty.

5.3. Noise Issues

1. Speaker Power: If the original speaker power is too low, increasing the unit's volume may cause noise. Avoid excessively high volume.
2. Grounded Speaker Cable: Ensure speaker cables are not grounded. Connect them directly to the unit's speaker cables.

5.4. Remote Control Not Working

1. Battery Check: Use a mobile phone camera to check if the remote control's IR emitter lights up when a button is pressed. If not, replace the battery.

5.5. Settings Not Saved (No Memory)

1. Wiring Check: Ensure the yellow (B+) and red (ACC) wires are connected separately to their correct terminals (yellow to constant positive, red to ignition switch). If they are connected together or reversed, settings will not be saved.

5.6. Bluetooth Not Functioning

Turn on the unit, search for its Bluetooth name (SWL-BT) on your mobile phone, and connect. If issues persist, ensure the unit's Bluetooth is enabled and try restarting both devices.

5.7. Product Emits Smoke

Immediately replace the FUSE. If the problem persists, the internal circuit may be burned, requiring after-sales service.

5.8. Sound Cannot Be Adjusted

1. Reset: Reset the unit or unplug and replug the power cord.
2. Volume Knob: If the volume knob is broken, it may need replacement.

5.9. Reversing Camera Not Displaying

1. Wiring Check: Verify correct and complete wiring for the reversing camera, including the reverse control line and video input.
2. Camera Fault: If the camera's indicator light (if any) does not illuminate when properly wired, the camera itself may be faulty and require replacement.

5.10. USB Devices Cannot Be Played

Format the USB flash disk to FAT32. Re-download one or two songs and try again. If it still doesn't work, replace the USB flash drive.

5.11. FM Does Not Receive Radio Stations

1. Antenna Connection: Ensure the antenna plug is fully inserted and the antenna line is not disconnected or damaged.
2. Station Search: Perform an automatic station search (AMS/APS) or manually search using the previous/next buttons.
3. Antenna Fault: If issues persist, unplug the antenna and try inserting a screwdriver or metal strip into the antenna port as a temporary antenna to check for reception.

5.12. No Sound After Installation / After a While

1. Speaker Wiring: Check if any speaker cables are short-circuited or incorrectly connected. Reconnect any short circuits.
2. Speaker Compatibility: Verify the number of speaker cables matches the original car's wiring. If the original car has only 2 speaker cables, you may need to re-route the wiring to support 4 speaker cables (2 per speaker).
3. Unit Fault: If all wiring is correct, disconnect all speaker cables from the unit, then connect an external speaker to the gray and purple wires of the tail line. If there is sound, the car's speaker line is short-circuited or the speaker is damaged. If there is no sound, the unit is likely faulty.

6. Specifications

7. Warranty and Support

BQCC provides a 1-year manufacturer's limited warranty for defective items, excluding damages caused by misuse or incorrect installation. Accessories typically come with a 3-month warranty.

7.1. 365 Days Free Replacement

Within 365 days from receiving the product, if the main body of the product has quality problems within the scope of the manufacturer's warranty service (excluding non-human damage like wrong wiring, dropping, or water damage), BQCC will provide a free replacement. Product quality terms refer only to product hardware quality problems and non-human damages that cannot be solved by software upgrades.

Service Process: The buyer initiates the free replacement service and sends the product back. After the seller confirms receipt of the returned product, a new replacement unit will be sent.

For any issues or questions, please refer to the provided PDF manual for more details or contact customer support.

For the full user manual in PDF format, please refer to the Item guides & documents.

8. User Tips

• Software/Application: The unit operates on a Quanzhi WIN-CE system. It comes with its own built-in applications for media playback, radio, and Bluetooth. No external applications are typically required or supported for core functions.
• Wiring Safety: Always double-check your wiring connections. The unit has built-in protection against incorrect positive and negative pole connections, which prevents the circuit board from burning. This is a valuable safety feature, but careful installation is still recommended.
• Pre-Test: Always perform the pre-installation test with a car battery before fully installing the unit into your dashboard. This can save significant time and effort in troubleshooting.
• Steering Wheel Controls: Take advantage of the steering wheel learning function to customize controls for safer and more convenient operation while driving.