1) Power on while pressing and holding down the [AMP SIMULATOR] , [PARAMETER] and [SONG] buttons simultaneously. The *QY100 TEST* diagnostics screen will appear.

2) Release the buttons.

3) Press the [F3] Function button (third grey button from the top on the right side of the display) to select '[F3]:Factory Set'. The screen will temporarily display '18: Factory Set OK' and then return to the main Song mode screen. The unit is now ''reset''.

WARNING: All user-stored data will be deleted. If the current settings and data are not expendable, create a backup before executing the Factory Reset. This can be done by performing a "Bulk Dump" to an external MIDI storage device or saving data to a Smart Media card.