1. Introducció
This manual provides comprehensive instructions for the setup, operation, and maintenance of your COOLMUSIC CM-88B Beginner Digital Piano. Please read this manual thoroughly before using the instrument to ensure proper function and to maximize your playing experience. This 88-key digital piano is designed for portability and versatility, suitable for beginners and those requiring a compact musical instrument.

Image 1.1: The COOLMUSIC CM-88B 88-key digital piano in its unfolded state, ready for use.
2. Contingut del paquet
Verifiqueu que tots els elements que s'enumeren a continuació s'inclouen al vostre paquet:
- COOLMUSIC CM-88B Digital Piano
- Pedal de sosteniment
- Adaptador d'alimentació
- Cable de càrrega USB-C
- Music Sheet Rest
- Bossa de transport
- Manual d'usuari (aquest document)
3. Producte acabatview
3.1 Dimensions and Portability
The CM-88B digital piano features a full 88-key layout and is designed to be foldable for convenient storage and transport. When unfolded, its dimensions are approximately 1234mm in length and 218mm in width.

Image 3.1: The CM-88B digital piano with its approximate length (1234mm) and width (218mm) indicated.

Image 3.2: The CM-88B digital piano in its folded configuration, highlighting its compact design for storage and travel.
3.2 Tauler de control i ports
The control panel provides access to various functions, while the rear ports allow for external connections.

Image 3.3: Diagram illustrating the control panel buttons and their functions.
- Interruptor d'alimentació: Encén o apaga el piano.
- Pantalla LED: Mostra la configuració i els modes actuals.
- Encoder Switch: Used for adjusting volume and navigating menus.
- Botó de gravació/reproducció: Initiates recording or playback.
- Botó del metrònom: Activates or deactivates the metronome.
- Demonstrate Button: Plays built-in demo songs.
- Timbre Button: Selects different instrument sounds.
Ports posteriors:

Image 3.4: Diagram illustrating the rear connection ports.
- SUS (Sustain Pedal) Port: Connects the included sustain pedal.
- MP3 Port: Per connectar dispositius d'àudio externs.
- Port MIC: Per connectar un micròfon.
- Port dels auriculars: Per a consulta privada.
- Port USB: For charging, MIDI connectivity, and data transfer.
4. Configuració
4.1 Unfolding the Piano
- Place the folded piano on a flat, stable surface.
- Gently unfold the two halves of the piano until they lock securely into place, forming a continuous 88-key keyboard.
4.2 Alimentació del piano
The CM-88B can be powered in three ways:

Image 4.1: Illustration of the three power supply options: Power Adapter, USB Port Charging, and Built-in Lithium Battery.
- Adaptador d'alimentació: Connect the included power adapter to the USB port and a wall outlet.
- Càrrega del port USB: Connect the piano to a computer or power bank via the USB-C charging cable.
- Bateria de liti integrada: The piano has an internal rechargeable battery, providing approximately 4 hours of use on a full charge.
4.3 Connexió del pedal de sustain
Insert the sustain pedal cable into the SUS port on the rear of the piano. The sustain pedal allows notes to continue sounding after the keys are released.

Image 4.2: The sustain pedal connected to the digital piano, ready for use.
4.4 Attaching the Music Sheet Rest
Slide the music sheet rest into the designated slot on the top panel of the piano.
5. Instruccions de funcionament
5.1 Funcionament bàsic
- Encès/apagat: Press and hold the Power Switch button.
- Ajust de volum: Rotate the Encoder Switch to increase or decrease the volume.
5.2 Sound and Rhythm Functions
The piano offers 128 tones, 128 rhythms, and 30 demo songs.

Image 5.1: The digital piano's display indicating the availability of 128 rhythms, 128 tones, and 30 demo songs.
- Selecció de tons: Premeu el botó Timbre button and use the Encoder Switch to browse and select from 128 different instrument sounds.
- Selecció de ritmes: Refer to the manual's rhythm list (if provided) and use the appropriate controls to select a rhythm.
- Reproducció de cançons de demostració: Premeu el botó Demostrar button to cycle through the 30 built-in demo songs.
- Metrònom: Premeu el botó Metrònom button to activate or deactivate the metronome. Adjust tempo using the Encoder Switch.
5.3 MIDI and Bluetooth Connectivity
The CM-88B supports MIDI connectivity for use with music software and Bluetooth for app-based practice.

Imatge 5.2: Ex.amples of MIDI software on a computer and a music app on a smartphone, demonstrating connectivity options.
- Connexió MIDI: Connect the piano to a computer or other MIDI-compatible device using a USB-C data cable. The piano can function as a MIDI controller for software like Cubase, FL Studio, Logic, and Live.
- Bluetooth APP Practice: Pair the piano with your smartphone or tablet via Bluetooth to use compatible piano learning applications.

Image 5.3: A tablet screen showing a piano learning application, indicating Bluetooth connectivity for interactive practice.
5.4 Enregistrament i reproducció
The piano allows you to record your performances and play them back.
- Gravació: Premeu el botó Enregistrament/Reproducció button once to enter recording mode. Play your desired piece. Press the button again to stop recording.
- Reproducció: Després de gravar, premeu el botó Enregistrament/Reproducció button to play back your recorded performance.
5.5 Dual Tone Mode
This feature allows two different instrument sounds to be layered simultaneously.

Image 5.4: Two individuals playing the digital piano, illustrating the potential for shared or dual-tone practice.
- To activate Dual Tone mode, refer to the specific instructions in the piano's on-screen menu or a dedicated button (if available).
- Select the two desired tones using the Timbre button and Encoder Switch.
5.6 Muting Practice
For private practice, connect headphones to the headphone port. This mutes the internal speakers.

Image 5.5: A person wearing headphones while playing the digital piano, enabling quiet practice without disturbing others.
6. Manteniment
- Neteja: Use a soft, dry cloth to clean the surface of the piano. Avoid abrasive cleaners or solvents.
- Emmagatzematge: When not in use, fold the piano and store it in its carrying bag in a dry, cool place away from direct sunlight and extreme temperatures.
- Cura de la bateria: For optimal battery life, avoid fully discharging the battery frequently. Charge the piano regularly, even if not in use for extended periods.
7. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| No hi ha so dels altaveus | Volum massa baix; Auriculars connectats; Apagat | Increase volume; Disconnect headphones; Power on |
| Les claus no responen | Piano not fully unfolded; Internal issue | Ensure piano is securely unfolded; Restart piano; Contact support if issue persists |
| MIDI connection unstable | Faulty USB cable; Software conflict; Shared USB port issues | Try a different USB-C data cable; Close other MIDI software; Ensure dedicated USB port if possible |
| Bluetooth no connectat | Bluetooth off on device; Piano not in pairing mode; Interference | Enable Bluetooth on your device; Refer to piano's Bluetooth pairing instructions; Move closer to piano |
| El pedal de sustain no funciona | Pedal not fully inserted; Faulty pedal | Ensure pedal is firmly connected to SUS port; Test with another compatible pedal if available |
8. Especificacions
- Nom del model: CM-88B
- Nombre de claus: 88
- Tipus de clau: Full-Weighted (as per product description, though customer reviews suggest otherwise, this manual reflects product claims)
- Connectivitat: MIDI (micro USB), Bluetooth
- Font d'alimentació: Multiple (Power Adapter, USB Charging, Built-in Lithium Polymer Battery)
- Bateria: 1 bateria de polímer de liti (inclosa)
- Pes de l'article: 2.6 quilograms (5.72 lliures)
- Dimensions (paquet): 27.95 x 11.89 x 7.87 polzades
- Programari compatible: Music composition software compatible with MIDI (e.g., Cubase, FL Studio, Logic, Live)
- Característiques: 128 Tones, 128 Rhythms, 30 Demo Songs, Recording, Playback, Metronome, Dual Tone, Muting Practice, Built-in Speakers
9. Garantia i Suport
For warranty information and technical support, please refer to the warranty card included with your product or contact COOLMUSIC customer service through their official weblloc web o el distribuïdor on es va comprar el producte. Si us plau, conserveu el comprovant de compra per a reclamacions de garantia.