Avision AV620C2+ (DF-1015S/DF-1004S) - Manual (Page 16)

3.1.2 Placing Your Document in the ADF Paper Tray
Fanning Your Document
Standard paper size should feed easily through the scanner.
To avoid occasional paper jam when automatically feeding
multiple documents, loosen the paper before loading.
Document Feeding
1. Raise the ADF paper tray to about 45 degrees and pull the
tray extension.
3-2