Greadio Portable CD Player User Manual

1. Introduction

Thank you for purchasing the Greadio Portable CD Player. This device is designed for versatile audio playback, supporting CD, USB, FM transmission, and AUX output. It features a built-in rechargeable battery, dual stereo speakers, anti-skip protection, and a backlit display for enhanced usability. Please read this manual thoroughly to understand the product's functions and ensure proper operation and maintenance.

2. Safety Instructions

• Do not expose the device to rain, moisture, or extreme temperatures.
• Avoid placing the device near heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Do not disassemble, repair, or modify the unit yourself. Refer all servicing to qualified service personnel.
• Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
• To prevent hearing damage, do not listen at high volume levels for long periods.
• Clean only with a dry cloth.

3. Package Contents

Please check the package contents upon unboxing:

• Greadio Portable CD Player
• USB-C Charging Cable
• 3.5mm AUX Cable
• Wired Headphones
• User Manual

4. Product Overview and Controls

Familiarize yourself with the layout and functions of your CD player.

Image: Front view of the Greadio Portable CD Player, showing the central display, control buttons, and connected headphones and cables.

Control Buttons and Ports:

• FM Button: Activates and controls the FM transmitter function.
• REP/PROG Button: Controls repeat modes and programming playback order.
• SLEEP Button: Sets the sleep timer for automatic power off.
• FUN Button: Accesses various function modes.
• Play/Pause Button (►▮): Starts or pauses playback.
• Skip/Fast Forward (►►): Skips to the next track or fast forwards during playback.
• Skip/Rewind (◄◄): Skips to the previous track or rewinds during playback.
• Volume Up (V+): Increases the volume.
• Volume Down (V-): Decreases the volume.
• DC 5V Port: USB-C input for charging the device.
• LINE OUT Port: 3.5mm audio output for connecting to headphones or external speakers.
• USB Port: For connecting a USB flash drive for music playback.

5. Setup

5.1 Charging the Battery

The Greadio Portable CD Player is equipped with a 2000mAh rechargeable battery, providing approximately 5 hours of CD playback or 7 hours of USB playback on a full charge. It takes about 4 hours to fully charge the device.

1. Connect the supplied USB-C charging cable to the DC 5V port on the CD player.
2. Connect the other end of the USB-C cable to a USB power adapter (not included) or a compatible USB port on a computer.
3. The battery indicator on the display will show charging status. It will indicate full when charging is complete.

Image: The Greadio Portable CD Player connected to a wall charger via a USB-C cable, illustrating the charging process and battery life indicators.

5.2 Initial Power On

To turn on the device, press and hold the Play/Pause button (►▮) for a few seconds until the display lights up. To turn off, press and hold the Play/Pause button again.

6. Operating Instructions

6.1 CD Playback

The player supports CD, MP3, CD-R, and CD-RW formats.

1. Open the CD compartment cover.
2. Carefully place a CD onto the spindle with the label side facing up.
3. Close the CD compartment cover firmly.
4. The player will read the disc, and playback will begin automatically. If not, press the Play/Pause button (►▮).
5. Use the Skip/Fast Forward (►►) and Skip/Rewind (◄◄) buttons to navigate tracks.
6. Adjust volume using the V+ and V- buttons.

Image: The Greadio Portable CD Player with its lid open, showing a CD placed inside, illustrating the CD loading process. The image also highlights its programming capability for various CD formats.

Programming Playback (PROG Function)

You can program up to 99 songs for CDs and 20 songs for MP3s to play in a specific order.

1. While the CD is stopped, press the REP/PROG button. The display will show 'PROG'.
2. Use the Skip/Fast Forward (►►) or Skip/Rewind (◄◄) buttons to select the desired track number.
3. Press the REP/PROG button again to confirm the track and add it to the program list.
4. Repeat steps 2 and 3 to add more tracks.
5. After programming all desired tracks, press the Play/Pause button (►▮) to start programmed playback.

6.2 USB Music Playback

The player supports WAV, FLAC, APE, and MP3 audio formats from a USB drive up to 64GB.

1. Insert a USB flash drive into the USB port on the side of the player.
2. The player will automatically switch to USB mode and begin playback. If not, press the FUN button to select USB mode.
3. Use the Skip/Fast Forward (►►) and Skip/Rewind (◄◄) buttons to navigate tracks.

Image: The Greadio Portable CD Player with a USB flash drive inserted into its USB port, demonstrating its capability to play music from USB drives supporting various audio formats.

6.3 FM Transmitter Function

Broadcast your CD or USB audio wirelessly to an FM radio (e.g., car stereo) within the 87.5-108MHz frequency range.

1. Ensure the CD player is powered on and playing audio (CD or USB).
2. Press the FM button to activate the FM transmitter. The display will show the FM frequency.
3. Use the Skip/Fast Forward (►►) or Skip/Rewind (◄◄) buttons to adjust the FM frequency on the CD player.
4. Tune your car radio or other FM receiver to the same frequency displayed on the CD player.
5. Adjust the volume on your car radio for optimal sound.

Image: The Greadio Portable CD Player placed on a car dashboard, illustrating its FM transmitter function broadcasting to the car radio. The lower part of the image shows the player connected via an AUX cable to the car's audio input.

6.4 AUX Output Connection

Connect the CD player to external audio systems like car stereos, home stereos, or powered speakers using the 3.5mm AUX cable.

1. Connect one end of the supplied 3.5mm AUX cable to the LINE OUT port on the CD player.
2. Connect the other end of the AUX cable to the AUX input port on your external audio system.
3. Ensure the external audio system is set to its AUX input mode.
4. Play audio on the CD player. Sound will now be output through the connected system.

6.5 Using Headphones

For private listening, plug any standard 3.5mm headphones into the LINE OUT port.

6.6 Dual Stereo Speakers

The player features built-in 3W dual stereo speakers, delivering rich, room-filling sound for an immersive listening experience without external speakers.

Image: Close-up view of the Greadio Portable CD Player, emphasizing its dual stereo speakers with glowing blue circles to indicate sound output.

6.7 Anti-Skip Protection

The advanced anti-skip mechanism helps prevent interruptions during playback, ensuring smooth music even during movement or on bumpy rides.

Image: The Greadio Portable CD Player resting on a car dashboard, with a blurred background suggesting motion, illustrating its anti-skip protection feature for uninterrupted playback.

6.8 Backlit Display

The bright LCD screen with adjustable backlight allows for easy viewing of track information, settings, and battery levels, even in low-light conditions.

6.9 Sleep Timer

The sleep timer allows you to set the device to automatically power off after a specified duration (5-120 minutes). The player also powers down after 20 minutes of inactivity to conserve battery.

1. Press the SLEEP button repeatedly to cycle through the available sleep timer settings (e.g., 5min, 10min, 15min, ..., 120min, OFF).
2. Select your desired duration. The player will automatically turn off after this time.

Image: A woman sleeping peacefully in bed with the Greadio Portable CD Player on a nearby table, highlighting the sleep timer feature that allows automatic power-off.

7. Maintenance

7.1 Cleaning the Device

• Wipe the exterior of the player with a soft, dry, lint-free cloth.
• Do not use abrasive cleaners, waxes, or solvents.
• For the CD lens, use a specialized CD lens cleaning kit. Do not touch the lens directly.

7.2 Storage

• When not in use for extended periods, store the player in a cool, dry place away from direct sunlight and extreme temperatures.
• Remove any disc or USB drive before storing.

8. Troubleshooting

9. Specifications

10. Warranty and Customer Support

The Greadio Portable CD Player comes with a 12-month hassle-free warranty. Greadio also provides lifetime customer support for this product.

If you encounter any issues or have questions regarding your device, please contact Greadio customer support for assistance. Refer to the product packaging or the official Greadio website for contact details.