Introduction
Thank you for purchasing the COBY BT-CD20 Portable CD Player. This versatile audio device offers multiple playback options, including traditional CDs, MP3 files from USB memory, FM radio, AUX input for external devices, and wireless audio streaming via Bluetooth. To ensure optimal performance and longevity of your device, please read this instruction manual thoroughly before operation. Keep this manual handy for future reference.
Key Features
- Portable CD Player (supports CD, CD-R/RW)
- USB Memory Playback (MP3 files)
- FM Radio Tuner
- AUX Input (3.5mm Jack)
- Bluetooth Wireless Connectivity
- Built-in Stereo Speakers
- Headphones Jack
- Digital Display with Timer Function

Package Contents
Please check that all items are present:
- COBY BT-CD20 Portable CD Player Unit
- AC Power Cord
- Instruction Manual
Product Overview
Familiarize yourself with the various parts and controls of your COBY BT-CD20.


Control Panel (Refer to Figure 3):
- POWER Button: Turns the unit on or off.
- MODE Button: Switches between CD, USB, FM, AUX, and Bluetooth modes.
- FM Button: Specifically for FM radio functions (e.g., auto-scan, tuning).
- CLOCK/TIMER Button: Sets the clock and timer functions.
- PREV/NEXT Buttons (|<>|): Skips tracks/files or tunes radio frequencies.
- PLAY/PAUSE Button (>||): Starts or pauses playback.
- STOP Button (■): Stops playback.
- VOL (Volume) Knob: Adjusts the audio output level.
- USB Port: For connecting USB memory devices.
- Display Screen: Shows current mode, track number, frequency, etc.
Top and Rear Views:

- CD Compartment: Located on top, for inserting audio CDs.
- FM Telescopic Antenna: Extendable antenna on the rear for improved FM reception.
- AC Power Input: Located on the rear for connecting the power cord.
- AUX Input Jack: Located on the rear/side for connecting external audio devices.
- Headphones Jack: Located on the rear/side for private listening.

Setup
- Power Connection:
- Ensure the unit is turned off.
- Connect the supplied AC power cord to the AC power input on the rear of the BT-CD20.
- Plug the other end of the AC power cord into a standard wall outlet (AC 100-240V, 50/60Hz).
- Antenna Adjustment (for FM Radio):
- For optimal FM reception, fully extend the telescopic antenna located on the rear of the unit.
- Adjust the position and direction of the antenna to achieve the best signal.
Operating Instructions
General Operation
- Power On/Off: Press the POWER button to turn the unit on or off.
- Volume Control: Rotate the VOL knob clockwise to increase volume and counter-clockwise to decrease it.
- Mode Selection: Press the MODE button repeatedly to cycle through available modes: CD, USB, FM, AUX, Bluetooth. The selected mode will be shown on the display.
CD Playback
- Press the POWER button to turn on the unit.
- Press the MODE button to select CD mode.
- Open the CD compartment lid by gently lifting it.
- Place a CD (label side up) onto the spindle in the CD compartment.
- Close the CD compartment lid. The unit will read the CD, and the total number of tracks will appear on the display.
- Press the PLAY/PAUSE button to start playback.
- During playback:
- Press PLAY/PAUSE to pause playback; press again to resume.
- Press NEXT (>>|) to skip to the next track.
- Press PREV (|<) to skip to the beginning of the current track, or press twice to go to the previous track.
- Press and hold NEXT (>>|) or PREV (|<) to fast forward or rewind within a track.
- Press the STOP (■) button to stop playback.
USB Playback (MP3)
- Press the POWER button to turn on the unit.
- Insert a USB memory device (containing MP3 files) into the USB Port on the front of the unit.
- Press the MODE button to select USB mode. The unit will automatically scan and begin playing MP3 files.
- Playback controls are similar to CD playback:
- Press PLAY/PAUSE to pause/resume.
- Press NEXT (>>|) or PREV (|<) to skip tracks.
- Press and hold NEXT (>>|) or PREV (|<) to fast forward or rewind.
- Press the STOP (■) button to stop playback.
FM Radio Operation
- Press the POWER button to turn on the unit.
- Press the MODE button to select FM mode.
- Extend the telescopic antenna for best reception.
- Auto Scan: Press and hold the FM button (or a dedicated SCAN button if present, otherwise use PLAY/PAUSE in FM mode) to automatically scan and store available FM stations.
- Manual Tuning: Press NEXT (>>|) or PREV (|<) repeatedly to manually tune to desired frequencies.
- Preset Stations: (If available, typically involves pressing FM button briefly to cycle through presets or a separate PRESET button).
Bluetooth Operation
- Press the POWER button to turn on the unit.
- Press the MODE button to select Bluetooth mode. The display will show "BT" or a similar indicator, and the unit will enter pairing mode.
- On your Bluetooth-enabled device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "COBY BT-CD20" (or similar name) from the list of devices.
- Once paired, the unit will emit a confirmation sound, and the display will indicate a successful connection.
- Start playing audio on your connected device. The sound will be streamed through the BT-CD20 speakers.
- You can control playback (Play/Pause, Next/Previous track) using the buttons on the BT-CD20 or directly from your connected device.
AUX Input
- Press the POWER button to turn on the unit.
- Connect one end of a 3.5mm audio cable (not supplied) to the AUX Input jack on the BT-CD20.
- Connect the other end of the audio cable to the headphone jack or audio output of your external device (e.g., smartphone, MP3 player).
- Press the MODE button to select AUX mode.
- Start playing audio on your external device. The sound will be played through the BT-CD20 speakers.
- Volume can be adjusted using the VOL knob on the BT-CD20 and/or the volume control on your external device.
Clock and Timer Functions
The BT-CD20 features a digital clock and a timer function. Specific steps for setting these functions are typically detailed in the full manual. Generally:
- Setting the Clock: Press and hold the CLOCK/TIMER button, then use the PREV/NEXT buttons to adjust hours and minutes, and CLOCK/TIMER again to confirm.
- Setting the Timer: Press the CLOCK/TIMER button briefly to enter timer setting mode. Use PREV/NEXT to set the desired wake-up time and select the audio source (CD, USB, FM). Confirm settings with the CLOCK/TIMER button.
Maintenance
- Cleaning the Unit:
- Wipe the exterior of the unit with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Ensure the unit is unplugged before cleaning.
- CD Lens Care:
- Avoid touching the CD lens inside the compartment.
- If the lens becomes dirty, use a specialized CD lens cleaning kit.
- Storage:
- When not in use for extended periods, unplug the unit and store it in a cool, dry place.
- Keep the CD compartment lid closed to prevent dust accumulation.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not properly connected. | Check if the AC power cord is securely plugged into the unit and the wall outlet. |
| No sound | Volume is too low or muted. Incorrect mode selected. | Increase the volume using the VOL knob. Ensure the correct mode (CD, USB, FM, AUX, BT) is selected. |
| CD not playing / Skipping | CD is dirty, scratched, or inserted incorrectly. CD compartment lid is open. | Clean the CD with a soft cloth. Ensure the CD is inserted label-side up. Close the CD compartment lid completely. Try another CD. |
| USB not recognized | USB device not properly inserted. Incompatible file format (only MP3 supported). | Ensure the USB device is fully inserted. Check if files are in MP3 format. Try another USB device. |
| Poor FM reception | Antenna not extended or positioned correctly. Interference. | Fully extend and adjust the telescopic antenna. Move the unit away from other electronic devices that may cause interference. |
| Bluetooth pairing failure | Device too far. Bluetooth not enabled on external device. Unit not in pairing mode. | Ensure the BT-CD20 is in Bluetooth mode and within range of your device. Enable Bluetooth on your external device and search again. |
Specifications
| Brand Name | COBY |
| Model | BT-CD20 |
| Type | Portable CD Player |
| Interface Type | USB, 3.5mm Jack |
| Speaker | Yes (Built-in) |
| Remote Control | No |
| Certification | KC |
| Dimensions (L x W x H) | 29 cm x 22 cm x 14 cm (approx.) |
| Weight | 1.16 kg (approx.) |
| Origin | Mainland China |
User Tips
- For best FM reception, always fully extend and adjust the telescopic antenna.
- When using the USB playback, ensure your MP3 files are organized in a simple folder structure for easier navigation.
- To prolong battery life (if using batteries, though not explicitly mentioned, it's a portable device), unplug the AC adapter when not charging or when running on batteries.
- If experiencing issues with CD playback, try a different, clean, and unscratched CD to rule out media problems.
Support
For any questions, technical assistance, or support regarding your COBY BT-CD20, please contact the seller or the manufacturer's customer service. Refer to your purchase documentation for specific contact details.
You may also find support resources by scanning the QR codes provided by the seller for Naver Talk or Kakao Channel support.





