Why is the volume low or no sound is heard on my Yamaha P-155 Musical Instrument?
If the overall volume is low, or no sound is heard, it may be due to several reasons: * The Master Volume may be set too low. Adjust it to an appropriate level using the [MASTER VOLUME] dial. * Headphones might be connected to the headphones jack. Ensure that headphones are not connected. * Local Control might be OFF. Ensure that Local Control is ON.
How to stop noise from speakers on Yamaha Musical Instrument?
The noise you hear from the speakers or headphones might be due to interference from a mobile phone used close to the instrument. To resolve this, turn off the mobile phone or move it further away from the instrument.
How to turn on Yamaha P-155 Musical Instrument?
If your instrument doesn't turn on, ensure it's properly plugged in. Securely insert the female plug into the socket on the instrument and the male plug into a working AC outlet.
What to do if Yamaha P-155 Musical Instrument doesn't recognize USB storage device?
If your Yamaha Musical Instrument isn't recognizing the USB storage device, it might be due to the timing of the device connection. Try this: If the [USB] indicator is already lit by pressing of the [SONG SELECT] button, re-select the [USB] indicator after turning the [USB] indicator off by pressing the [SONG SELECT] button. If it still doesn't work, the device might not be supported by Yamaha.
Why sustain pedal has no effect on Yamaha P-155?
If the sustain pedal has no effect, the pedal cable/plug may not be properly connected. Make sure to securely insert the pedal plug into the proper jack.
What to do if foot pedal produces the opposite effect on Yamaha Musical Instrument?
If the foot pedal seems to produce the opposite effect, the type of the foot pedal may be reversed. If this happens, use F5.6 or F5.7 to correct the pedal type.
What to do if USB storage device has hung up on Yamaha P-155?
If the USB storage device has hung up (stopped), it could be due to a compatibility issue or improper operation. Use only devices whose compatibility has been confirmed by Yamaha. You can also try disconnecting the device and connecting it to the instrument again.
Why are the three LEDs flashing when connecting USB to Yamaha P-155?
If the three LEDs of “SAVE TO USB,” “LOAD TO USER” and “DEL./FORMAT” at the [FILE] button flash simultaneously when a storage device is connected, the USB storage device is not compatible with the instrument. Only use devices whose compatibility has been confirmed by Yamaha.
General| Type | Digital Piano |
|---|---|
| Keyboard | 88-key Graded Hammer (GH) keyboard |
| Polyphony | 128 |
| Amplifier | 12W x 2 |
| Chorus | Yes |
| Metronome | Yes |
| Transpose | Yes |
| Touch Sensitivity | Hard/Medium/Soft/Fixed |
| Power Consumption | 20W |
| Sound Source | AWM Dynamic Stereo Sampling |
| Weight | 18.6 kg |
| Reverb | Yes |
| Effects | Brilliance |
| Sequencer/Recorder | 2-track recorder |
| Connectivity | MIDI In/Out, USB to Host |
| Power Supply | PA-300 or equivalent |
| Included Accessories | Music Rest |
| Sound Engine | Advanced Wave Memory (AWM) Dynamic Stereo Sampling |
| Speakers | 12cm x 2 |
Essential safety warnings regarding electrical shock, water exposure, and fire hazards.
Important cautions for safe operation, placement, and electrical connection to prevent injury or damage.
Overview of the instrument's key features, including keyboard action and sampling technology.
Lists the items included with the instrument, such as the manual, power adapter, and foot switch.
Identification and function of all controls located on the front panel of the instrument.
Step-by-step guide on how to connect the power adapter and turn on the instrument.
Instructions on adjusting the master volume for a comfortable listening experience.
Explains how to connect and use sustain and auxiliary pedals for enhanced performance.
Instructions for connecting headphones for private practice and speaker muting.
Instructions on how to attach and use the included music rest.
Guide to selecting different instrument sounds (voices) available on the P-155.
How to adjust the tone's brilliance and add reverb effects for sonic expression.
Details on applying effects like chorus/phaser and simulating damper resonance.
Simple method to record performances automatically to the right part.
Explains saving, loading, and managing recorded songs using a USB storage device.
How to select song parts and play back songs from internal memory or USB.
A comprehensive list of all available functions and their parameters for detailed instrument configuration.
Identifies and describes the purpose of all connection terminals on the instrument.
Explains connecting external MIDI devices for data transfer and control.
Details the connection and function of sustain and auxiliary pedal jacks.
How to back up instrument data to a computer for archiving and organization.
Explains MIDI control change messages for instrument parameter control.
Details MIDI program change messages used for voice selection.
Covers Yamaha and Universal System Exclusive messages for advanced MIDI control.
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