You can designate the way the machine handles LTRR and STMT originals that are placed on the platen glass.
1.
Press 
→ [Function Settings] → [Common] → [Scan Settings] → [LTRR/STMT Original Selection].
→ [Function Settings] → [Common] → [Scan Settings] → [LTRR/STMT Original Selection]. 2.
Select [Select Manually], [Use LTRR Format], or [Use STMT Format] → press [OK].
If you select [Select Manually], a screen enabling you to select the original size appears when scanning.
If you select [Use LTRR Format], the machine detects the original as LTRR.
If you select [Use STMT Format], the machine detects the original as STMT.