Yamaha PSR-E473 Service Manual page 17

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INITIALIZATION
You can erase the backup parameter settings described above, and then restore all the default factory settings. The instrument can
be initialized with the following two methods.
l
Backup Clear
This operation initializes the backup parameters.
While holding down the highest white key, press the [ ] (Standby/On) switch to turn the power on.
l Flash Clear
This operation deletes all the songs and styles that have been transferred from a computer. However, data that has been loaded
into Styles 291 to 300 will not be deleted. While simultaneously holding the highest white key and the three highest black keys,
press the [ ] (Standby/On) switch to turn the power on.
CAUTION
Highest note on the keyboard
(white key) and highest three black keys
▪ Keep in mind that this operation also deletes any data you have purchased and loaded. Be sure
to save important data to a computer.
Highest note on the
keyboard (white key)
PSR-E473
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