1. Introduction
The THINKYA JA-310R is a vintage-style, portable CD player designed to deliver high-fidelity lossless audio. Featuring Bluetooth 5.1 connectivity, USB playback, and multiple output options including optical and 3.5mm headphone jack, it offers versatile music enjoyment. Its elegant wooden aesthetic and full-featured remote control enhance the user experience.

Image 1.1: THINKYA JA-310R CD Player and Remote Control
2. Safety Information
- Do not expose the device to rain, moisture, or extreme temperatures.
- Avoid placing the device near heat sources or in direct sunlight.
- Use only the specified power adapter (DC5V/1A Type-C).
- Do not attempt to disassemble or repair the unit yourself. Refer all servicing to qualified personnel.
- Keep the device away from strong magnetic fields.
- Ensure proper ventilation around the unit during operation.
3. Package Contents
Please check the package for the following items:
- Main unit (THINKYA JA-310R CD Player) x1
- Remote control x1
- User Manual x1
- USB cable (Type-C) x1

Image 3.1: Key features of the JA-310R CD Player
4. Product Overview
4.1 Front Panel Controls
The front panel features essential playback controls and an LED display.

Image 4.1: Front Panel Controls and Display
4.2 Rear Panel Connections
The rear panel provides various input and output ports for connectivity.

Image 4.2: Rear Panel Connections
- Optical Digital Interface (SPDIF): For connecting to external audio systems with optical input.
- 3.5mm Headphone Output Connector (Stereo): For connecting wired headphones.
- USB Interface: For playing multimedia files from a USB flash drive.
- USB Type-C Power Input Connector (DC IN 5V): For power supply.
4.3 Translucent CD Dust Cover
The player features a translucent dust cover that protects the CD mechanism from dust and moisture, contributing to a longer service life. The cover can rotate 90 degrees for easy access.

Image 4.3: CD Dust Cover with 90° Rotation
5. Setup
5.1 Power Connection
- Connect the provided USB Type-C cable to the 'DC IN 5V' port on the rear of the CD player.
- Connect the other end of the USB cable to a compatible 5V/1A USB power adapter (not included) or a USB power source.
- The device will power on, and the LED display will illuminate.
5.2 Audio Output Connection
Choose one of the following methods to connect your audio output:
- Wired Headphones: Plug your 3.5mm headphones into the '3.5mm headphone output' jack.
- External Speakers (Wired): Connect your external speakers to the 3.5mm headphone output or use an optical cable for digital audio output via the 'Optical digital interface (SPDIF)' port.
- Bluetooth Speakers (Wireless): Refer to section 6.3 for Bluetooth connection instructions.

Image 5.1: Multiple Connection Options
6. Operating Instructions
6.1 CD Playback
- Gently open the translucent CD dust cover.
- Place a CD (CD-DA, MP3 CD-R/RW) onto the spindle, ensuring it is seated correctly.
- Close the CD dust cover.
- Press the 'Play/Pause' button on the player or remote control to start playback.
- Use the 'Previous Song' and 'Next Song' buttons to navigate tracks.
- Adjust the volume using the 'Volume +/-' buttons on the player or remote.
- Press the 'Stop Play' button to stop playback.

Image 6.1: Professional Pure CD Laser
6.2 USB Playback
- Insert a USB flash drive containing MP3/WMA/WAV/ACC files into the 'USB Interface' port.
- Press the 'CD/USB Convert Mode' button on the remote control to switch to USB mode.
- The player will automatically detect and begin playing compatible audio files.
- Use the 'Play/Pause', 'Previous Song', 'Next Song', and 'Volume +/-' buttons for control.
6.3 Bluetooth Connection
The JA-310R features a built-in EDR Bluetooth 5.1 transmitter, allowing wireless connection to Bluetooth speakers or headphones.
- Ensure the CD player is powered on.
- Activate pairing mode on your Bluetooth speaker or headphones (refer to their respective manuals).
- Press the 'Bluetooth' button on the remote control. The player will enter Bluetooth pairing mode.
- The CD player will automatically search for and connect to nearby Bluetooth devices in pairing mode.
- Once connected, audio from the CD player will be transmitted wirelessly to your Bluetooth device.

Image 6.2: Bluetooth 5.1 Connectivity with External Speakers
6.4 Remote Control Usage
The included infrared remote control provides full functionality for convenient operation.

Image 6.3: Remote Control Button Layout
| Button | Function |
|---|---|
| Power | Turns the device on/off. |
| Bluetooth | Activates Bluetooth pairing mode. |
| Fastback | Fast reverse during playback. |
| Previous song | Skips to the previous track. |
| Pause/Play | Toggles between play and pause. |
| Next song | Skips to the next track. |
| Fast Forward | Fast forward during playback. |
| Stop Play | Stops current playback. |
| CD/USB Convert Mode | Switches between CD and USB playback modes. |
| Repeat | Repeats current track or entire album. |
| Volume - | Decreases volume. |
| Volume + | Increases volume. |
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the player. For the CD lens, use a specialized CD lens cleaner. Do not use abrasive cleaners or solvents.
- Dust Cover: Keep the translucent CD dust cover closed when not in use to prevent dust accumulation and protect the internal components.
- Storage: Store the player in a cool, dry place away from direct sunlight and extreme temperatures.
- CD Handling: Always handle CDs by their edges to avoid fingerprints and scratches. Store CDs in their cases when not in use.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cable not connected properly; Faulty power adapter. | Ensure Type-C cable is securely connected. Try a different 5V/1A USB power adapter. |
| CD not playing / Skipping | CD is dirty or scratched; CD inserted incorrectly; Lens is dirty. | Clean the CD with a soft cloth. Reinsert the CD correctly. Use a CD lens cleaner. |
| No sound output | Volume too low; Incorrect output selected; Cables not connected. | Increase volume. Check if headphones/speakers are connected correctly. Ensure Bluetooth is paired if using wireless. |
| USB drive not recognized | USB drive not formatted correctly; Incompatible file types; USB drive faulty. | Ensure USB drive is FAT32. Check if files are MP3/WMA/WAV/ACC. Try a different USB drive. Ensure player is in USB mode. |
| Bluetooth pairing fails | Device not in pairing mode; Too far from player; Interference. | Ensure target Bluetooth device is in pairing mode. Move devices closer. Reduce interference from other wireless devices. |
| Remote control not working | Batteries depleted; Obstruction between remote and player; Remote faulty. | Replace remote control batteries. Remove any obstructions. Ensure remote is pointed at the player's IR receiver. |
9. Specifications
| Feature | Specification |
|---|---|
| Model | JA-310R |
| Supported Media | CD-DA, MP3 (CD-R/RW) |
| USB Playback | MP3/WMA/WAV/ACC (FAT32 USB drives) |
| Bluetooth Version | 5.1 (with EDR, A2DP, V1.3 support) |
| Interface Type | Optical Digital (SPDIF), 3.5mm Headphone Output, USB, Type-C Power Input |
| Power Input | DC 5V/1A (Type-C charging) |
| Noise Ratio | 80dB |
| Dimensions (L x W x H) | 157mm x 131mm x 28mm |
| Weight | Approx. 310g |
| Material | Wood |
| Remote Control | Infrared |

Image 9.1: Product Dimensions
10. User Tips
- For the best audio experience, especially with lossless music, it is recommended to use high-quality headphones or external speakers.
- When connecting via Bluetooth, ensure your receiving device (speaker/headphones) is in pairing mode and within close proximity to the CD player for a stable connection. The Bluetooth button on the remote control initiates the pairing process.
- To switch between CD and USB playback, use the dedicated 'CD/USB Convert Mode' button on the remote control.
- The wooden casing not only provides a retro aesthetic but also helps in reducing undesirable resonance, contributing to purer sound quality.

Image 10.1: Enjoy Pure Music with Headphones
11. Warranty and Support
This product comes with a 12-month warranty from the date of receipt, covering manufacturing defects. If the product malfunctions within this period, please contact the seller for repair or replacement. Please note that the product must be returned for any repair or replacement services.
For further assistance or technical support, please contact your retailer or the manufacturer's customer service.





