You can delete scanned data on the memory card or USB flash drive using the operation panel.
Make sure that the machine is turned on.
Select
Scan on the HOME screen.
The screen for selecting to which you save the data is displayed.
NoteIf the Scan standby screen for forwarding the data to the USB-connected computer is displayed on the LCD, press the left Function button to display the screen for selecting to which you save the data.
Insert the memory card into the card slot or insert the USB flash drive into the direct print port.
ImportantYou cannot use the memory card and USB flash drive at the same time.
NoteIf you insert the memory card into the card slot or the USB flash drive into the direct print port before selecting Scan on the HOME screen, a screen other than Scan is displayed.
If both photo files and PDF files are saved on the memory card/USB flash drive, the confirmation screen to select which file you print is displayed.
If you press the HOME button, the HOME screen is displayed.
Select
Memory card or
USB flash drive, then press the OK button.
Select
Delete scanned data, then press the OK button.
The file list is displayed.
NoteYou can preview the file to delete or switch the file list between PDF and JPEG.

Switch format
By pressing the left Function button, you can switch the display between the PDF data list and the JPEG data list.
Change display
By pressing the center Function button, you can switch the display between the list and the preview.
When the format for PDF data is selected, only the first page of the PDF data is displayed on the LCD.
Use the 
button to select the file to delete, then press the OK button.
Use the 
button to select Yes on the confirmation screen, then press the OK button.
The machine starts deleting the file.