HP 3200 Resolving scanning problems, Unable to, activate, Twain, source, Problem, Cause, Solution

Resolving scanning problems

See the table below to help you solve problems with quality of scans. See also “Resolving image quality problems” on page 181 and “Resolving paper feed problems” on page 170.

Problem	Cause	Solution
The message	The computer parallel port might not	Ensure that the computer has a parallel
on the	adequately support bidirectional	port with a bidirectional data bus (EPP or
computer	communication.	unidirectional ports are not supported).
screen says		Change the parallel port mode setting in
there was a		the computer’s BIOS. HP recommends
		setting it to ECP or bidirectional, but other
problem
		modes might also work. For instructions
opening
		about changing the setting, see the
scanner:
		computer documentation, or contact the
Unable to		computer manufacturer.
activate	Another device such as an external drive	If there is another device connected to the
TWAIN
	or switchbox might be interfering.	computer parallel port, disconnect it and
source.
		connect the product directly to the
		computer parallel port. You might also
		have to remove software for the other
		device before the product will work. Or,
		use a second parallel port on the
		computer.
	The wrong TWAIN source is selected	Verify that the correct TWAIN source is
	within the program.	selected. In the software, check the
		TWAIN source by clicking Select Source
		from the File menu.
No parallel port	The product must be directly connected to	If you have a device such as an external
is available, or	the computer’s parallel port. It cannot	disk drive or switch box connected to the
the parallel port	share the parallel port with another	parallel port and want to continue using it,
is being shared	device.	you must use two parallel ports on your
by another		computer.
device.

166 Chapter 8 - Problem Solving and Product Maintenance EN