1. Introduction
Thank you for choosing the BQCC K-701D 1DIN Car MP3 Player. This manual provides detailed instructions for installation, operation, maintenance, and troubleshooting to ensure you get the best experience from your new car radio. The K-701D is designed to offer a rich audio experience with modern connectivity and convenient features.
2. Key Features
- DAB Digital Audio Broadcasting: Enjoy clear, stable, and high-quality digital radio with a wide selection of channels and real-time text display.
- Bluetooth 5.1 Connectivity: Seamlessly connect your mobile device for music streaming and hands-free calls with stable connection and HD sound quality.
- Car Locator Function: Utilize a mobile app to locate your parked car, preventing loss in large parking lots.
- Multiple Media Playback: Supports AUX input, TF Card, and U Disk (USB) for playing MP3, WMA, WAV, and FLAC audio formats.
- Dual USB Ports: One port for U Disk playback and another for fast charging (5V_2.1A current) your mobile devices.
- Subwoofer Audio Output: Enhance your audio experience with dedicated subwoofer output for powerful bass.
- FM Radio Tuner: Traditional FM radio function for entertainment news and music.
- 2.5D Screen Full Touch Buttons: Responsive and convenient touch controls for easy operation.
- LCD Dot Matrix Display: Low-voltage, micro-power consumption display designed for eye protection and long life.
- 7-Color Button Lights: Customizable colorful button backlighting (Red, Green, Blue, Yellow, Cyan, Purple, White).
3. Package Contents
Please check the box for the following items:
- BQCC K-701D Car MP3 Player Unit
- Remote Control
- Wiring Harness
- DAB Antenna
- Headphones (may vary by package)
- Instruction Manual (this document)

4. Specifications
| Feature | Specification |
|---|---|
| Model | K-701D |
| Type | Car MP3 Player |
| Software Solution | A5900 |
| Radio Frequency | FM 87.5~108MHz, AM 522~1620KHz |
| Radio IC | 4732 |
| Amplifier IC | TDA7388 |
| Output Power | 60W x 4 |
| Working Voltage | DC 12V ~ 14.4V |
| Working Temperature | -10~60℃ |
| Bluetooth Version | 5.1 (Default Name: CAR BT) |
| Screen Type | LCD Dot Matrix (110×28MM) |
| Installation Size | 178mm x 50mm |
| Shell Size | 188mm x 58mm |
| Host Depth | 65mm |
| Item Weight | 0.538 KG |
| OSD Language | English |
| Material | ABS+Metal |
| Certification | CE |

5. Installation
Professional installation is highly recommended to avoid damage to your vehicle's dashboard or the unit itself. Ensure the vehicle's power is disconnected before beginning installation.
5.1 Wiring Connections
The unit comes with a dedicated wiring harness. Please refer to the diagram below for correct connections. Incorrect wiring can prevent the unit from turning on or cause damage.
- Power Supply: Connect the red and yellow wires to the positive side of the 12V power supply. Connect the black wire to the negative power supply.
- Speakers: Ensure speaker wires are connected correctly and do not touch each other or the power cables to prevent sound issues.
- Radio Antenna: Connect the radio antenna securely. A loose or damaged antenna can affect FM reception.
- DAB Antenna: Connect the provided DAB/DAB+ active glass antenna using standard SMA connectors.
- Subwoofer Output: Connect your external subwoofer to the dedicated RCA outputs on the rear panel.
- Steering Wheel Control: This unit supports steering wheel control. An optional CAN-Bus may be required for specific car models to match the unit to the vehicle's amplifier and steering wheel controls.


6. Operation
6.1 Front Panel Controls
Refer to Figure 5.1 for the layout of the front panel buttons and their primary functions:
- RES (Reset button): Press to reset the unit.
- VOL+/- (Volume control): Rotate to adjust volume. Press SEL for other settings.
- MIC (Microphone): Built-in microphone for hands-free calls.
- Previous Track / Next Track buttons: Navigate through tracks or radio stations.
- MODE (Mode switch): Switch between different audio sources (Radio, AUX, BT, USB, TF).
- BAND/AMS (Band switching / Automatic search): Switch radio bands or perform automatic station search.
- CLK (Clock display / Time setting): Display or set the time.
- AUX (AUX input): Connect external audio devices.
- USB Read Disk: USB port for media playback.
- USB Charging: Dedicated USB port for charging devices.
- TF Card Input: Slot for TF (MicroSD) card media playback.

6.2 Radio Function (FM/AM/DAB)
The unit supports FM, AM, and DAB digital radio. DAB provides superior sound quality and a wider range of stations.
- Switching Bands: Press the BAND/AMS button to cycle through FM, AM, and DAB bands.
- Searching Stations: Press and hold BAND/AMS for automatic station search. Use the previous/next track buttons for manual tuning or to navigate presets.
- DAB Features: DAB offers clear, stable sound without interference. It can display song name, artist, and program information on the screen.


6.3 Bluetooth Connection
The unit features Bluetooth 5.1 for wireless audio streaming and hands-free calling.
- Ensure Bluetooth is enabled on your mobile phone.
- On your phone, search for Bluetooth devices and select 'CAR BT' (the default name for the unit).
- If prompted for a pairing code, enter '0000'. If this doesn't work, try '1234' or '123456'.
- Once paired, you can stream music and make/receive calls through the car radio.

6.4 Media Playback (USB/TF Card/AUX)
- USB Disk: Insert a USB flash drive into the 'USB Read Disk' port. The unit will automatically switch to USB mode and begin playback.
- TF Card: Insert a TF (MicroSD) card into the TF card slot. The unit will automatically switch to TF mode and begin playback.
- AUX Input: Connect an external audio player (e.g., smartphone, MP3 player) to the 3.5mm AUX input jack using an audio cable. Press the MODE button to select AUX input.


6.5 Car Locator Function
The K-701D includes a car locator feature to help you find your vehicle. You need to install a mobile application on your smartphone.
- Scan the QR code provided in Figure 6.7 to download and install the mobile app.
- Connect your mobile phone to the car radio via Bluetooth before turning off the car's ignition.
- The app will record the car's last known location, allowing you to find it later. Disconnecting Bluetooth after the ignition is off will not affect the recorded location.

6.6 Colorful Button Lights
The unit features customizable 7-color button lights. You can cycle through Red, Green, Blue, Yellow, Cyan, Purple, and White options to match your car's interior or personal preference.

7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the unit's surface. Do not use abrasive cleaners or solvents.
- Temperature: Avoid exposing the unit to extreme temperatures or direct sunlight for prolonged periods.
- Moisture: Keep the unit dry. Moisture can damage internal components.
- Fuse Replacement: If the unit does not power on, check the fuse. Replace it with a fuse of the same type and rating (DC 12V).
8. Troubleshooting
If you encounter issues with your BQCC K-701D, please refer to the following common problems and solutions:
8.1 Unit Does Not Turn On
- Check Voltage: Ensure the car radio is receiving DC 12V power.
- Verify Wiring: Confirm that the red and yellow wires are connected to the positive power supply and the black wire to the negative power supply.
- Check Fuse: Inspect the fuse. If blown, replace it with a new one of the same type.
- Power Cables: Always use the provided power cables. Do not directly insert original car plugs into the unit.
8.2 No Sound When Playing Music
- Audio Cable Compatibility: If not using the original audio cable, ensure your cable is compatible.
- Wiring Collision: Check for any short circuits or collisions between speaker wires or between speaker wires and power cables.
- Speaker Test: Connect a single speaker to each group of audio cables separately to identify if a specific speaker or wiring is faulty.
8.3 Cannot Search FM Radio Stations
- Antenna Connection: Ensure the radio antenna is securely plugged in. Try re-inserting it several times to ensure good contact.
- Signal Strength: Move to an area with better radio signal reception and try again.
- Antenna Condition: Check if the car's radio antenna is broken or ineffective. Replace if necessary.
8.4 Cannot Connect Bluetooth
- Phone Settings: Open your phone's Bluetooth settings, search for 'CAR BT', and attempt to pair. Use '0000', '1234', or '123456' as the pairing code if required.
- Test with Another Phone: Try pairing with a different mobile phone to rule out phone-specific issues.
- Power Cycle: If issues persist, unplug the power connector from the back of the player, wait 3 minutes, and then plug it back in.
8.5 Clock Displays After Unit is Off
The time display is a built-in feature of the car radio and cannot be removed. It is designed for convenience. If you do not wish to see the clock, you would need to completely disconnect the power supply to the unit.
9. User Tips
- Wiring Precision: Always double-check all wiring connections, especially power and speaker cables, to prevent common issues like no power or no sound.
- Bluetooth Re-pairing: If Bluetooth connection becomes unstable, try deleting the device from your phone's Bluetooth list and re-pairing.
- Antenna Check: For optimal radio reception (FM/AM/DAB), ensure your antenna is properly installed and in good condition.
- Professional Installation: While some users may attempt self-installation, professional installation is recommended to ensure correct setup and avoid potential damage.
10. Warranty and Support
10.1 Warranty Information
- Main Unit Warranty: The manufacturer provides a 12-month limited warranty for defective items from the date of receipt. This warranty does not cover items damaged due to misuse or improper installation.
- Accessories Warranty: Accessories included with the unit are covered by a 3-month warranty.
- Reporting Defects: Defective items must be reported and returned within the specified warranty period.
10.2 Customer Support
For any product quality issues or technical assistance, please contact BQCC customer service at: bqcc.cpyu@gmail.com. Our team will respond promptly to help resolve your concerns.





