Sharp AL2021, AL2041 manual → If your application is not TWAIN/WIA compliant

Problem	Cause and solution	Page
	If scanning is not possible, shut down your computer,
	turn off the machine's power switch, and unplug the
	machine's power cord. Next, start your computer,	–
	restore power to the machine, and try scanning again.
	If scanning is still not possible, check the following
	items.
	Your application is not TWAIN/WIA compliant.
	→ If your application is not TWAIN/WIA compliant,	–
	scanning will not be possible. Make sure your
Unable to scan the	application is TWAIN/WIA compliant.
image.	You have not selected the scanner driver of the
	machine in your application.	–
	→ Make sure that the machine's scanner driver is
	selected in your TWAIN/WIA-compliant application.
	You have not specified all scanning preferences
	appropriately.
	→ Scanning a large area at high resolution results in a	–
	large amount of data and extended scanning times.
	The scanning preferences should be set appropriately
	for type of original to be scanned, i.e., Text, Text/
	Graphics, Photograph.
	Your computer does not meet the system requirements
Scanner transfer	for the USB 2.0 interface (Hi-Speed mode).	15, 67
	→ See "HARDWARE AND SOFTWARE
speed is slow.
	REQUIREMENTS" to configure your system as
	required for USB 2.0, and check if "Hi-Speed" is set.

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