MODUS
H11
Owner's Manual

Troubleshooting

Problem
The instrument does not turn on.

Possible Cause and Solution
The instrument has not been plugged in properly. Securely insert the female plug into the socket on the instrument, and the male plug into a proper AC outlet (page 15).

Problem
A click or pop is heard when the power is turned on or off.

Possible Cause and Solution
This is normal when electrical current is being applied to the instrument.

Problem
Noise is heard from the speakers or headphones.

Possible Cause and Solution
The noise may be due to interference caused by the use of a mobile phone in close proximity to the instrument. Turn off the mobile phone, or use it further away from the instrument.

Problem
The overall volume is low, or no sound is heard.

Possible Cause and Solution
The Volume is set too low: set it to an appropriate level using the [MASTER VOLUME] control.
Make sure a pair of headphones is not connected to the headphones jack (page 15).

Problem
The pitch and/or tone of the Piano Voices in certain ranges do not sound right.

Possible Cause and Solution
The Piano Voices attempt to precisely simulate actual piano sounds. However, as a result of sampling algorithms, overtones in some ranges may sound exaggerated, producing a somewhat different pitch or tone. This is normal, and no cause for concern.

Problem
Mechanical noise is heard when the keys move.

Possible Cause and Solution
The keyboard mechanism of this instrument simulates the keyboard mechanism of an actual piano. Mechanical noise is also heard on a piano. This is normal, and is no cause for concern.

Problem
The USB flash memory device cannot be normally read and written.

Possible Cause and Solution
The particular USB flash memory device is not supported by the instrument. The operation of the USB flash memory may become unstable.

Problem
The USB flash memory device has hung up (stopped).

Possible Cause and Solution
The USB flash memory is not compatible with the instrument. Only use the USB flash memory device whose compatibility has been confirmed by Yamaha (page 22).
Disconnect the device and connect it to the instrument again.

Problem
The cover under the keyboard becomes warm.

Possible Cause and Solution
Heat might be generated while using the instrument. This is normal, and no cause for concern.

This is the end of the file.