Yamaha PSR-EW400, Owner'S Manual

7

PSR-E453/PSR-EW400  Owner’s Manual

• Do not insert a finger or hand in any gaps on the instrument. 

• Never insert or drop paper, metallic, or other objects into the gaps 

on the panel or keyboard. This could cause physical injury to you 
or others, damage to the instrument or other property, or 
operational failure.

• Do not rest your weight on, or place heavy objects on the 

instrument, and do not use excessive force on the buttons, 
switches or connectors.

• Do not use the instrument/device or headphones for a long period 

of time at a high or uncomfortable volume level, since this can 
cause permanent hearing loss. If you experience any hearing loss 
or ringing in the ears, consult a physician.

Always turn the power off when the instrument is not in use. 

Even when the [

] (Standby/On) switch is in standby status (display is off), electricity is still flowing to the instrument at the minimum level. 

When you are not using the instrument for a long time, make sure you unplug the power cord from the wall AC outlet.

Make sure to discard used batteries according to local regulations.

NOTICE

To avoid the possibility of malfunction/ damage 
to the product, damage to data, or damage to 
other property, follow the notices below.



 Handling

• Do not use the instrument in the vicinity of a TV, radio, 

stereo equipment, mobile phone, or other electric devices. 
Otherwise, the instrument, TV, or radio may generate noise. 
When you use the instrument along with an application on 
your iPad, iPhone or iPod touch, we recommend that you 
set “Airplane Mode” to “ON” on that device in order to 
avoid noise caused by communication. 

• Do not expose the instrument to excessive dust or 

vibrations, or extreme cold or heat (such as in direct 
sunlight, near a heater, or in a car during the day) to 
prevent the possibility of panel disfiguration, damage to 
the internal components or unstable operation. (Verified 
operating temperature range: 5° – 40°C, or 41° – 104°F.)

• Do not place vinyl, plastic or rubber objects on the 

instrument, since this might discolor the panel or 
keyboard.



 Maintenance

• When cleaning the instrument, use a soft cloth.  Do not use 

paint thinners, solvents, alcohol, cleaning fluids, or 
chemical-impregnated wiping cloths.



 Saving data

• Some of the data of this instrument (page 39) are retained 

when the power is turned off. However, the saved data may 
be lost due to some failure, an operation mistake, etc. Save 
your important data onto USB flash drive/an external 
device such as a computer (pages 36, 64). Before using a 
USB flash drive, make sure to refer to page 62.

• To protect against data loss through USB flash drive 

damage, we recommend that you save your important data 
onto spare USB flash drive or an external device such as a 
computer as backup data.

Information



 About copyrights

• Copying of the commercially available musical data 

including but not limited to MIDI data and/or audio data is 
strictly prohibited except for your personal use.

• This product incorporates and bundles contents in which 

Yamaha owns copyrights or with respect to which Yamaha 
has license to use others' copyrights. Due to copyright 
laws and other relevant laws, you are NOT allowed to 
distribute media in which these contents are saved or 
recorded and remain virtually the same or very similar to 
those in the product.
* The contents described above include a computer 

program, Accompaniment Style data, MIDI data, WAVE 
data, voice recording data, a score, score data, etc.

* You are allowed to distribute medium in which your 

performance or music production using these contents is 
recorded, and the permission of Yamaha Corporation is 
not required in such cases.



 About functions/data bundled with the 

instrument

• Some of the preset songs and the songs that can be 

downloaded from the Yamaha website have been edited for 
length or arrangement, and may not be exactly the same as 
the original.



 About this manual

• The illustrations and LCD screens as shown in this manual 

are for instructional purposes only, and may appear 
somewhat different from those on your instrument.

• Windows is a registered trademark of Microsoft® 

Corporation in the United States and other countries.

• iPhone, iPad and iPod touch are trademarks of Apple Inc., 

registered in the U.S. and other countries.

• The company names and product names in this manual are 

the trademarks or registered trademarks of their respective 
companies.

Handling caution

Yamaha cannot be held responsible for damage caused by improper use or modifications to the instrument, or data that is lost or destroyed.

DMI-5

  3/3