Introduction
Thank you for purchasing the Coby MPCD511 Personal MP3 CD Player. This manual provides essential information for the safe and efficient operation of your device. The MPCD511 is designed to play both standard audio CDs and MP3-formatted CDs, offering extended playback time and portability. It features advanced anti-skip protection for uninterrupted listening.
Important Safety Information
Please read all safety and operating instructions carefully before using this product. Keep these instructions for future reference.
- Do not expose the unit to rain or moisture.
- Avoid placing the unit near heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Use only attachments/accessories specified by the manufacturer.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way.
- Do not use the unit at excessively high volume levels, as this may cause hearing damage.
- Dispose of batteries properly, following local regulations.
Package Contents
Please check that all items are present in the package:
- Coby MPCD511 Personal MP3 CD Player
- Professional Digital Neckband Stereo Headphones
- User Manual (this document)
Note: 2 x "AA" batteries and a DC 4.5V AC/DC adapter are not included and must be purchased separately.
Product Overview
Familiarize yourself with the various parts and controls of your Coby MPCD511 player.

Figure 1: Coby MPCD511 Personal MP3 CD Player. The image displays the top surface of the player, highlighting the central CD compartment lid, the Coby brand name, "MP3" and "120 SEC ANTI-SKIP PROTECTION" labels. On the left side, there's a small LCD screen and buttons labeled ASP/DIR, PGM, and MODE. Along the bottom edge, playback control buttons (play/pause, stop, skip forward/backward) are visible. The right side shows a volume slider.
Controls and Indicators:
- LCD Display: Shows track number, playback mode, battery status, and other information.
- ASP/DIR Button: Activates Anti-Skip Protection or navigates directories on MP3 CDs.
- PGM (Program) Button: Used to program a sequence of tracks for playback.
- MODE Button: Selects different playback modes (e.g., repeat, random).
- Play/Pause Button (►/❚❚): Starts or pauses playback.
- Stop Button (■): Stops playback.
- Skip Forward/Backward Buttons (►►/◄◄): Skips to the next/previous track. Hold to fast forward/rewind.
- Volume Slider: Adjusts the audio output level.
- Headphone Jack (3.5mm): Connects headphones.
- DC 4.5V AC/DC Adapter Jack: For connecting an optional AC power adapter.
- Battery Compartment: Located on the bottom, holds 2 x "AA" batteries.
Setup
1. Powering the Unit
The Coby MPCD511 can be powered by two "AA" batteries or an optional DC 4.5V AC/DC adapter.
Using Batteries:
- Open the battery compartment cover on the bottom of the unit.
- Insert two "AA" batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
- Close the battery compartment cover securely.
Note: A low battery indicator will appear on the LCD display when batteries are running low. Remove depleted batteries promptly to prevent leakage.
Using AC Adapter (Optional):
- Plug the DC 4.5V AC/DC adapter (not included) into the DC 4.5V jack on the side of the unit.
- Plug the other end of the adapter into a standard wall outlet.
2. Connecting Headphones
Plug the provided stereo headphones into the 3.5mm headphone jack on the side of the unit. Ensure the plug is fully inserted for proper audio output.
Operating Instructions
1. Loading a CD/MP3 CD
- Gently press the "OPEN" button or slide the latch to open the CD compartment lid.
- Place a CD or MP3 CD onto the center spindle with the label side facing up.
- Gently press down on the center of the disc until it clicks into place.
- Close the CD compartment lid firmly until it latches.
- The player will read the disc, and the total number of tracks or folders will appear on the LCD display.
2. Basic Playback
- Play: Press the ► (Play/Pause) button to start playback. The current track number will be displayed.
- Pause: During playback, press the ► (Play/Pause) button to pause. Press again to resume.
- Stop: Press the ■ (Stop) button to stop playback.
- Skip Tracks: Press the ►► (Skip Forward) button to go to the next track. Press the ◄◄ (Skip Backward) button to go to the beginning of the current track, or press twice to go to the previous track.
- Fast Forward/Rewind: Hold down the ►► or ◄◄ button during playback to fast forward or rewind through the current track.
- Adjust Volume: Use the Volume slider on the side of the unit to increase or decrease the sound level.
3. MP3 CD Navigation
When playing an MP3 CD with multiple folders, use the ASP/DIR button to navigate between directories (folders). Pressing ASP/DIR will move to the next folder. Tracks within the selected folder can then be navigated using the skip buttons.
4. Anti-Skip Protection (ASP)
The Coby MPCD511 features digital anti-skip memory to prevent interruptions during playback, especially when the player is subjected to minor shocks or vibrations.
- CD Mode: Provides 45 seconds of anti-skip protection.
- MP3 Mode: Provides 120 seconds of anti-skip protection.
The ASP function is typically active by default. You can toggle it using the ASP/DIR button if needed, though it's generally recommended to keep it on for stable playback.
5. DBBS (Dynamic Bass Boost System)
The DBBS feature enhances the bass frequencies for a richer audio experience. This function is usually controlled by a switch or button on the unit (refer to the specific button layout if not explicitly labeled in the overview). Toggle it on or off according to your preference.
6. Programmable Track Memory
You can program up to a certain number of tracks (e.g., 20 for CD, 99 for MP3) to play in a specific order.
- In Stop mode, press the PGM button. "PGM" will flash on the LCD.
- Use the Skip Forward/Backward buttons to select the desired track.
- Press PGM again to confirm the track and add it to the program list.
- Repeat steps 2 and 3 to add more tracks.
- After programming all desired tracks, press the ► (Play) button to start playback of the programmed sequence.
Maintenance
Cleaning the Unit:
- Wipe the exterior of the unit with a soft, slightly damp cloth. Do not use abrasive cleaners or solvents.
- For the lens inside the CD compartment, use a specialized CD lens cleaner disc or a soft, lint-free cloth designed for optical lenses. Avoid touching the lens directly.
Battery Care:
- Remove batteries if the unit will not be used for an extended period to prevent leakage.
- Do not mix old and new batteries, or different types of batteries.
- Dispose of used batteries responsibly according to local regulations.
CD Care:
- Handle CDs by their edges to avoid fingerprints and scratches.
- Store CDs in their cases when not in use.
- Clean dirty CDs with a soft, lint-free cloth, wiping from the center outwards.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on. | Batteries are dead or inserted incorrectly. AC adapter not connected properly. | Replace batteries or check polarity. Ensure AC adapter is securely plugged in. |
| No sound from headphones. | Headphones not plugged in fully. Volume is too low. Disc is dirty or scratched. | Ensure headphone plug is fully inserted. Increase volume using the slider. Clean or replace the disc. |
| Disc skips or playback is interrupted. | Disc is dirty, scratched, or warped. Unit is subjected to excessive vibration. Anti-skip protection is off (unlikely). | Clean or replace the disc. Place the unit on a stable surface. Ensure ASP is active. |
| MP3 CD does not play or shows "NO DISC". | Disc is not a valid MP3 CD format. Disc is dirty or damaged. | Ensure the disc contains valid MP3 files. Clean or replace the disc. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | MPCD511 |
| Supported Disc Formats | CD, CD-R, CD-RW, MP3 CD |
| Anti-Skip Protection | 45 seconds (CD), 120 seconds (MP3) |
| Audio Output | 3.5mm Headphone Jack |
| Power Source | 2 x "AA" Batteries (not included), DC 4.5V AC/DC Adapter (not included) |
| Dimensions (WHD) | 5.25 x 5 x 1 inches |
| Weight | 1.1 pounds |
| Special Features | DBBS (Dynamic Bass Boost System), Programmable Track Memory, Low Battery Indicator |
Warranty and Support
Coby products are designed for reliability and performance. For warranty information or technical support, please refer to the warranty card included with your purchase or visit the official Coby website. Keep your proof of purchase for warranty claims.
For further assistance, you may contact Coby customer service through their official channels. Please have your model number (MPCD511) and purchase details ready.





