Introduction
The Yamaha Arius Series YDP105R is an 88-key weighted action upright digital piano designed for beginner and intermediate players. It offers an authentic sound and natural touch, aiming to replicate the experience of an acoustic grand piano. This manual provides essential information for setting up, operating, and maintaining your digital piano.
Key Features:
- Essential Grand Piano Sound: Enjoy the rich, dynamic sound of an acoustic piano plus 9 other instrument Voices.
- Acoustic Piano Touch: Experience the natural feel of an acoustic piano with the Graded Hammer Standard keyboard with Touch Response.
- Elegant Design: Traditional upright design, complete with elegant wood grain and a 3-pedal setup, fits seamlessly into any room.
- Solo or Duo Play: Dual headphone jacks for solos or duets, work with a teacher, or share your music with a friend.
- Complete Package: Includes bench, 3-pedal design, 10 voice demo songs, 10 piano preset songs, built-in stereo amplifier, and speakers.
What's in the Box
Upon unpacking, please ensure all the following components are present:
- Yamaha Arius Series YDP105R Digital Piano Unit
- Matching Bench
- 3-Pedal Unit
- Power Adapter
- Music Rest
- Owner's Manual (this document)
Setup
Follow these steps to assemble and prepare your Yamaha YDP105R Digital Piano for use.
1. Assembly
The Yamaha YDP105R requires minimal assembly. Typically, this involves attaching the stand, pedal unit, and bench. Refer to the included quick assembly guide for detailed instructions. Ensure all screws are tightened securely.
2. Power Connection
Connect the provided power adapter to the DC IN jack located underneath the piano. Plug the adapter into a standard wall outlet.
3. Pedal Unit Connection
The 3-pedal unit connects to a dedicated port underneath the piano. Ensure the cable is securely inserted.

4. Music Rest Installation
Insert the music rest into the designated slots on top of the piano. This provides a stable surface for sheet music or a tablet.

Operating the Piano
1. Power On/Off
Locate the power button on the left side of the keyboard. Press and hold the button for a few seconds to turn the piano on or off. An indicator light will illuminate when the piano is powered on.
2. Adjusting Volume
The master volume knob is located next to the power button. Turn the knob clockwise to increase the volume and counter-clockwise to decrease it.

3. Selecting Voices and Functions
The YDP105R offers 10 different instrument voices, including various piano sounds, electric pianos, organs, and strings. To select a voice or access other functions (like metronome, recording, or demo songs), use the 'Grand Piano/Function' button in combination with specific keys on the keyboard. Refer to the detailed owner's manual for a complete list of key combinations and functions.
4. Using the Pedals
The three pedals function as follows:
- Right Pedal (Sustain): Sustains the notes played.
- Middle Pedal (Sostenuto): Sustains only the notes held down when the pedal is pressed.
- Left Pedal (Soft): Softens the sound of the notes played.

Connectivity
1. Headphone Jacks
The YDP105R features two 3.5mm headphone jacks located underneath the keyboard. This allows for private practice or duet playing without disturbing others.

2. USB to Host
A USB to Host port is available for connecting the piano to a computer or smart device. This enables MIDI data transfer, allowing you to use the piano with music software or educational apps.
3. Smart Pianist App
Enhance your playing experience by connecting your YDP105R to the Yamaha Smart Pianist App. This dedicated app provides intuitive control of settings, sound selection, and interactive learning features. A cable connection is required, and the app is available on the App Store and Google Play.


4. Official Product Video Overview
Watch this official video from Yamaha Musical Instruments for an overview of the Arius Digital Piano Series.
Maintenance
To ensure the longevity and optimal performance of your Yamaha YDP105R, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the surface of the piano. For stubborn dirt, slightly dampen the cloth with water and a mild soap, then wipe dry immediately. Avoid abrasive cleaners or solvents.
- Key Care: Wipe the keys regularly with a soft, dry cloth. Do not use chemical cleaners on the keys.
- Environmental Conditions: Avoid exposing the piano to direct sunlight, extreme temperatures, or high humidity, as these can damage the instrument.
- Dust Cover: When not in use, consider covering the piano with a dust cover to protect it from dust and debris.
Troubleshooting
If you encounter any issues with your Yamaha YDP105R, try the following basic troubleshooting steps:
- No Sound: Check if the power is on and the volume is turned up. Ensure headphones are not plugged in if you expect sound from the speakers. Verify all cables (power, pedal) are securely connected.
- Keys Not Responding: Ensure the piano is powered on. If only certain keys are affected, contact customer support.
- Distorted Sound: Check the volume level; excessive volume can cause distortion. Ensure external speakers or headphones are properly connected and functioning.
- App Connectivity Issues: Ensure your smart device is compatible with the Smart Pianist App and that the connection cable is correctly attached.
If the problem persists after trying these steps, please refer to the comprehensive troubleshooting section in the full owner's manual or contact Yamaha customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | Yamaha |
| Model Name | YDP-105 |
| Model Number | YDP105R |
| Color | Dark Rosewood |
| Number of Keys | 88 |
| Key Type | Weighted Action (Graded Hammer Standard) |
| Skill Level | All |
| Special Features | Built-In Speaker, Duo Mode, Hammer Action, Headphone Jack, Multiple Voices, Weighted Keys |
| Connectivity Technology | Auxiliary, USB to Host |
| Headphones Jack | 3.5mm Jack (x2) |
| Power Source | Corded Electric |
| Item Dimensions (LxWxH) | 53.44 x 16.63 x 38.13 inches |
| Item Weight | 82.7 Pounds |
| UPC | 889025142007 |
Warranty and Support
Warranty Information
The Yamaha YDP105R comes with a 1-year manufacturer warranty from Yamaha Corporation of America. This warranty applies only to products purchased from authorized Yamaha retailers in the fifty United States (including the District of Columbia) and used in this area. For complete details, please review the Yamaha limited warranty for this product on the official Yamaha website.
Customer Support
For further assistance, technical support, or warranty claims, please contact Yamaha customer support through their official website or the contact information provided in your product packaging. You can also visit the product page on Amazon for additional resources and support options.





