BQCC 4.1-Inch Touchscreen Car MP5 Player User Manual

Introduction

This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of your BQCC 4.1-inch Touchscreen Car MP5 Player (Model 7805C). Please read this manual thoroughly before using the product to ensure proper functionality and safety.

The BQCC 7805C is a versatile car MP5 player featuring a 4.1-inch touchscreen, Bluetooth connectivity for music and hands-free calls, TF card and USB support for media playback and charging, and colorful lighting options. It is designed for universal vehicle compatibility.

Safety Precautions

• Ensure the vehicle's power is off before installation to prevent electrical shock or damage.
• Do not attempt to disassemble or modify the unit. Refer to qualified personnel for repairs.
• Keep the unit away from water and moisture.
• Avoid prolonged exposure to direct sunlight or extreme temperatures.
• Do not operate the unit in a way that distracts you from driving.

Setup and Installation

Before Installation

Before installing the product in your car, it is highly recommended to test the unit first. Products can be affected during long journeys, so testing ensures it is in working order.

Test Method:

1. Take the unit to your car battery. This car stereo operates on a 12V DC power supply.
2. Connect the red and yellow wires of the power cord together and connect them to the positive terminal of the battery.
3. Connect the black wire of the power cord to the negative terminal of the battery.
4. Wait for 10 seconds.
5. Press each button on the unit to check if it powers on normally. If it does, it's ready for installation.
6. If the unit does not start, re-verify all connections according to these steps. If the problem persists, contact customer support.

Installation Steps

The unit is designed for a standard single-DIN car radio installation slot.

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

ISO Plug Wiring Instructions

The ISO connector (B jack) has two versions (B1 or B2). Refer to the diagram below for the correct wiring for your unit. Incorrect wiring can cause damage or malfunction.

Image: Rear view of the BQCC 7805C car MP5 player, illustrating the location of the ISO and RCA connectors.

General Wiring Notes:

• Power (Yellow B+ and Red ACC): The yellow wire (B+) provides constant 12V power for memory retention. The red wire (ACC) connects to the ignition switch for switched 12V power. Both must receive 12V positive power simultaneously for the unit to turn on.
• Ground (Black GND): Connect to the vehicle's chassis ground.
• Antenna (Blue ANT): Connects to the radio antenna.
• Illumination (Green ILLUMINATION): Connects to the vehicle's illumination circuit.
• Steering Wheel Control (Brown KEY): For connecting to steering wheel control interfaces.
• Reverse (Pink REVERSE): Connects to the reversing camera's positive trigger.
• Brake (Orange BRAKE): Connects to the parking brake cable.
• Speaker Wires: There are 8 speaker cables. Each speaker cable must not be grounded, shared, or touch other lines to prevent sound distortion or unit overheating.

RCA Plug Description

The unit may come with two versions of the heat sink, affecting the RCA output configuration. Please check your specific unit.

Version 1 (4-hole RCA):

• Right Audio Output
• Left Audio Output
• Reversing Camera Input
• Video Output
• Radio ANT

Version 2 (6-hole RCA):

• Video Output 1
• MIC Input
• Left Audio Output
• Right Audio Output
• CVBS Input
• Radio Antenna
• Reversing Video Input
• Video Output 2

Reversing Camera Installation Method

To install a reversing camera, follow these steps:

1. Locate the "REVERSE" control line (pink wire) on the unit's power line. Connect this line to the 12V positive pole of the reversing light. The screen will turn blue when reverse is engaged.
2. Locate the CAM video input interface on the back of the unit.
3. The camera typically has two sockets:
   • The red socket connects to the camera's power cable.
   • The yellow socket inserts into the video cable.
   • Connect the red wire of the camera's power cable and the red wire of the video cable together to the positive pole of the reverse lamp. The black wire of the camera's power cable is not used.
   • Connect the other end of the video cable to the CAM video input interface on the back of the unit.
   • The red line coming out of the video line connects to the reversing control line of the power line.
4. If the camera is not installed, do not connect the REVERSE/BACK cable to any other point, otherwise the unit will automatically enter reverse mode, causing malfunction.

If the camera lamp does not light up when properly wired, the camera may be faulty and require replacement.

Operating Instructions

Unit Features and Controls

The unit features a 4.1-inch touchscreen and physical buttons for various functions:

Remote Control

The unit comes with a remote control for convenient operation. The style of the remote control may vary. Below are common functions found on the remote controls:

Common Remote Control Functions:

• Power On/Off, Mute On/Off
• Volume +/-, Mode Switch
• Play/Pause, Previous/Next Track
• Band Selection (FM1-FM2-FM3), AMS/APS (Auto Search/Store)
• Number Buttons (0-9), Menu, Enter/SEL
• Answer/End Call
• EQ (Equalizer settings: USER-CLASSIC-POP-ROCK-JAZZ-BEAT)
• Loop Playback, Intro to Music
• Jump to Music/Video Playback Interface

Maintenance

To ensure the longevity and optimal performance of your MP5 player, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the unit's screen and body. Avoid using abrasive cleaners or solvents.
• Fuse Replacement: If a fuse blows, replace it with a fuse of the same rating (15A). If a new fuse blows immediately, it indicates a short circuit within the unit, and professional repair is required. Do not repeatedly replace fuses without addressing the underlying issue.
• Environmental Conditions: Operate the unit within the recommended temperature range of -10°C to 60°C (14°F to 140°F).

Troubleshooting

1. Unit Does Not 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 (switched 12V), and black to negative ground. Incorrect or incomplete connections will prevent the unit from booting.
2. Car Wiring Compatibility: Original car wiring colors may not be standard. Connecting based solely on color can cause damage.
3. Original Car Plug: Do not plug the original car plug directly into the new unit without verifying pin assignments.
4. Fuse Check: If wiring is correct but the unit doesn't boot, check the fuse on the yellow line. If it's broken, replace it. If a new fuse blows, there's a short circuit.
5. Final Confirmation: If issues persist, connect the yellow and red wires directly to a 12V battery's positive terminal and the black wire to the negative. If it boots, the car's wiring is faulty. If it still doesn't boot, the unit may be defective.

2. Automatic Shut-down

1. Cable Error: If the blue cable (automatic antenna power supply) is connected to the unit's power cable, it will cause automatic shutdown. Correct the wiring.
2. Unstable Voltage: Test the unit with a stable 12V-5A power supply. If it doesn't shut down, replace your vehicle's power supply. If it still shuts down, the unit is faulty.

3. Noise Issues

1. Speaker Power: If the original speakers have low power, noise may occur at high volumes. Avoid setting the volume too high.
2. Grounded Speaker Cable: If a speaker cable is grounded, connect the iron speaker cable directly to the unit's speaker cable.

4. Remote Control Not Working

1. Test Method: Use a mobile phone camera to check the remote control's IR emitter. Point the remote at the camera and press a button. If you see a light on the phone screen, the remote is working. If not, replace the battery.

5. Settings Not Saved (No Memory)

1. Ensure the yellow (B+) and red (ACC) wires are connected correctly (yellow to constant positive, red to switched key control).
2. If yellow and red wires are reversed, swap their positions.

6. Bluetooth Not Working

Turn on the unit, enable Bluetooth on your mobile phone, search for the unit's Bluetooth name, and connect. Once connected, you can make calls and play music.

7. Product Emits Smoke

Replace the fuse. If the problem persists, the internal circuit is burned. Contact customer support for service.

8. Sound Cannot Be Adjusted

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

9. Reversing Camera Does Not Display

1. Wiring Check: Ensure the camera is correctly wired to the unit's REVERSE trigger and video input.
2. Camera Fault: If the camera's light does not illuminate when properly wired, the camera may be broken and require replacement.

10. USB Devices Cannot Be Played

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

11. FM Does Not Receive Radio Stations

1. Antenna Connection: Ensure the antenna plug is fully inserted and the antenna line is not disconnected.
2. Station Search: Use the AMS button for automatic search or the previous/next buttons for manual tuning.
3. If issues persist, unplug the antenna plug and insert a screwdriver or metal strip into the antenna port as a temporary antenna for testing.

12. No Sound Immediately After Installation

1. Speaker Cable Short Circuit: Check if any speaker cables are short-circuited or grounded. Reconnect if necessary.
2. Speaker Cable Count: If your original car wiring only has 2 speaker cables, but the unit requires 4, you may need to re-route the original car line to provide 4 speaker connections (one speaker requires 2 wires).

13. No Sound After A While

Disconnect all speaker cables from the unit (do not remove them). Connect an external speaker to the gray and purple wires of the unit's tail line. Test if there is sound. 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 broken.

Specifications

User Tips

• Installation Complexity: While the manual provides detailed wiring diagrams, some users find installation challenging. If you are unsure, consider seeking professional assistance or thoroughly reviewing the wiring instructions multiple times before attempting.
• Power Issues: If the unit occasionally fails to turn on or requires resetting, double-check all power connections (Yellow B+, Red ACC, Black GND) as per the troubleshooting section. Ensure stable 12V power supply.
• Equalizer Settings: The unit includes an equalizer (EQ) with various presets (USER-CLASSIC-POP-ROCK-JAZZ-BEAT). Experiment with these settings via the VOL/SEL button or remote control to optimize your audio experience.

Warranty and Support

This product comes with a one-year warranty from the date of purchase.

For any issues not resolved by the troubleshooting steps in this manual, or for warranty claims, please contact the seller or manufacturer's customer support.

Important Note: Functions and features are subject to change without prior notice due to device updates.

A detailed user manual in PDF format is also available for download: View User Manual (PDF)