1. Introduction and Overview
The MONODEAL MD-602S Portable CD Player is a versatile audio device designed for listening to CDs on the go, at home, or in your car. It features built-in dual stereo speakers, an FM transmitter for wireless car audio connection, and a rechargeable battery for extended use. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance of your device.

Image: The MONODEAL MD-602S Portable CD Player, a compact black device with a digital display and control buttons.
2. What's in the Box
Upon unboxing your MONODEAL MD-602S, please verify that all the following items are included:
- 1 x MONODEAL MD-602S CD Player
- 1 x 3.5mm to 3.5mm AUX Cable
- 1 x USB Charging Cable
- 1 x Earphones
- 1 x User Manual (this document)

Image: The MONODEAL MD-602S CD player, earphones, AUX cable, and USB charging cable laid out next to its packaging box.
3. Product Features
3.1. Dual Stereo Speakers
The MD-602S features built-in dual stereo speakers, allowing you to listen to your CDs or audiobooks without the need for external headphones or speakers. This is particularly useful for shared listening environments or for language learning.

Image: The portable CD player with an illustration highlighting its dual stereo speakers. Two children are shown wearing headphones, demonstrating the dual 3.5mm headphone jacks.
3.2. Resume Function and A-B Repeat
The device includes a resume function (PROG) that allows playback to continue from where it was last stopped. The A-B repeat function enables you to repeatedly play a specific segment of audio, which is beneficial for learning or practicing. You can also program tracks to play in a specific order.
3.3. Anti-Skip Protection and Backlight Display
Equipped with an anti-skip function, the MD-602S minimizes interruptions caused by vibrations during activities like walking or exercising, ensuring smooth playback. The LCD screen and control buttons feature a backlight, making operation easy even in low-light conditions.

Image: A woman running outdoors with the MONODEAL MD-602S CD player, highlighting its anti-skip protection feature for active use.
3.4. FM Transmitter for Car Use
A unique built-in FM transmitter allows you to wirelessly connect the MD-602S to your car's FM audio system. Seven FM frequencies are available to find the clearest signal, providing a convenient solution for cars without an AUX input or built-in CD player. A 3.5mm AUX cable is also included for wired connections.

Image: The MONODEAL MD-602S CD player shown in a car interior, illustrating both AUX and FM connection methods to the car's audio system.
3.5. Rechargeable and Portable Design
The MD-602S is equipped with a built-in 1800mAh rechargeable battery, offering approximately 10 hours of playback time with headphones. It can be charged using the included USB cable via a power bank, laptop, car charger, or standard USB wall adapter. Its compact and lightweight design makes it highly portable for both indoor and outdoor use.

Image: A diagram illustrating the 2000mAh rechargeable battery of the MONODEAL MD-602S, with icons for charging via laptop, car charger, power adapter, and power bank.
4. Setup Guide
4.1. Charging the Device
- Connect the small end of the USB charging cable to the "DC 5V" port on the side of the CD player.
- Connect the larger end of the USB cable to a compatible USB power source (e.g., computer USB port, USB wall adapter, power bank, car charger).
- The charging indicator light will illuminate during charging and turn off when fully charged. A full charge typically takes 3-4 hours.
4.2. Inserting a CD
- Locate the CD compartment lid on the top of the player.
- Gently press the "OPEN" button or slide the latch to open the lid.
- Place the CD onto the center spindle with the label side facing up. Ensure the CD is securely seated.
- Close the CD compartment lid firmly until it clicks into place.
4.3. Connecting Headphones or External Speakers
- Headphones: Plug the included earphones or your preferred 3.5mm headphones into either of the "Headphone" jacks on the side of the player. The MD-602S supports two pairs of headphones simultaneously.
- External Speakers/Car AUX: Use the included 3.5mm AUX cable to connect the "AUX Out" port on the CD player to the "AUX In" port on your external speakers or car audio system.
5. Operating Instructions
5.1. Basic Playback
- Ensure the "HOLD" switch on the side of the player is in the "OFF" position.
- Press the ►|| button to turn on the player and begin playback.
- Press the ►|| button again to pause playback. Press it once more to resume.
- Press the ■ button to stop playback.
- Use the ◀◀ or ►► buttons to skip tracks. Hold these buttons to fast forward or rewind within a track.
- Adjust the volume using the VOL+ and VOL- buttons on the side.
5.2. FM Transmitter Operation (for Car Audio)
This feature allows you to broadcast the CD player's audio to your car's FM radio.
- Turn on the CD player and ensure a CD is playing.
- Press the FM button on the CD player. The display will show the current FM frequency.
- Press the FM button repeatedly to cycle through the available frequencies (87.5, 88.5, 93.6, 103, 107.1 MHz).
- Tune your car's FM radio to the exact same frequency displayed on the CD player.
- Adjust the volume on both the CD player and your car stereo for optimal sound.

Image: A visual guide demonstrating how to connect the MONODEAL MD-602S to a car's audio system using either an AUX cable or the built-in FM transmitter, showing the frequency matching process.
5.3. A-B Repeat and PROG Function
- A-B Repeat: During playback, press the A-B button once to set the starting point (A). Press it again to set the ending point (B). The player will then repeatedly play the segment between A and B. Press A-B again to cancel.
- PROG (Program Play): In stop mode, press the PROG button. Use the PREVIOUS or NEXT buttons to select your desired track, then press PROG to add it to the program list. Repeat for up to 20 tracks. Press PLAY to start programmed playback.
5.4. Sound Effects (EQ) and Play Modes
- EQ (Equalizer): Press the EQ button to cycle through different sound effects: BBS, Pop, Jazz, Rock, Classic.
- MODE (Play Modes): Press the MODE button to select different playback modes:
- Play in order
- Repeat a track
- Repeat all
- A-B repeat (as described above)
- Shuffle (Play in a random order)

Image: The MONODEAL MD-602S CD player with icons indicating compatibility with MP3, TF Card, CD, CD-R, and HDCD formats. It also lists 5 play modes and 5 sound effects (EQ).
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the player. For the lens inside the CD compartment, use a specialized CD lens cleaning kit. Do not use abrasive cleaners or solvents.
- Storage: When not in use for extended periods, store the player in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in constant use.
- Handling CDs: Always handle CDs by their edges to avoid fingerprints and scratches, which can affect playback quality.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Player does not turn on. | Battery is depleted; HOLD switch is ON. | Charge the player; Ensure HOLD switch is in the OFF position. |
| CD does not play or skips. | CD is dirty, scratched, or inserted incorrectly; Anti-skip buffer depleted. | Clean the CD; Reinsert correctly; Ensure player is on a stable surface if skipping persists. |
| No sound from headphones/speakers. | Volume too low; Headphones/cable not fully plugged in; Incorrect output selected (e.g., FM mode active). | Increase volume; Re-plug connections firmly; Ensure FM mode is off if using headphones/AUX. |
| Poor FM transmission quality in car. | Interference from other FM stations; Incorrect frequency match. | Try a different FM frequency on the CD player and match it on your car radio; Move to an area with less radio interference. |
| Buttons are unresponsive. | HOLD switch is ON. | Slide the HOLD switch to the OFF position. |
8. Specifications
- Model Name: MD-602S
- Brand: MONODEAL
- Product Dimensions: 5.5 x 5.5 x 2 inches
- Item Weight: 1.06 pounds
- Color: Black
- Connectivity Technology: Wireless FM (for Car Radio), Auxiliary (3.5mm), USB (for charging)
- Battery: Built-in 1800mAh Rechargeable Battery
- Playback Time: Approximately 10 hours (with headphones)
- Charging Time: 3-4 hours
- Compatible Disc Formats: CD, HCD, CD-R, CD-RW
- Compatible Music Formats: CD-DA, MP3, WMA
- Special Features: Dual Stereo Speakers, FM Transmitter, Anti-Skip Protection, Backlight LCD, A-B Repeat, PROG Function, Multiple Sound Effects (EQ), Multiple Play Modes.
9. Warranty and Support
MONODEAL offers a 12-month warranty for the MD-602S Portable CD Player from the date of purchase. This warranty covers manufacturing defects and issues arising from normal use.
For technical support, warranty claims, or any questions regarding your product, please contact MONODEAL customer service. Refer to the contact information provided on the product packaging or the official MONODEAL website.
Please retain your proof of purchase for warranty purposes.







