Before turning off the main power of the machine, make sure that the Data Overwrite icon has switched to "Clear".
If the machine enters Low Power mode when overwriting is in progress, press the [Energy Saver] key to revive the display in order to check the icon.
The machine will not enter Sleep mode until overwriting has been completed.
If the Data Overwrite icon continues to be "Dirty" when there is no data to be overwritten, turn off the machine's main power. Turn it on again and see if the icon changes to "Clear". If it does not, contact your sales or service representative.