Avision AV1860 (DL-1101S/DL-1103S) - Manual (Page 116)

User’s Manual
9-5
Question:
When I choose optical resolution
to be 600 dpi, the "auto crop" and
"deskew" functions will be
disabled.
Answer: Since to perform auto crop and deskew
consumes great deal of system
memory, it is suggested if you wish to
perform "auto crop" and "deskew"
functions, please choose your optical
resolution to be smaller than 600 dpi
to prevent a error message.