Samsung CLX-216x manual You should wait for completion

Problem		Possible cause and solutions
The machine does	•	Check if your machine is attached to your
not appear on the		computer. Make sure that it is connected
scanners list.		properly via the USB port and is turned
		on.
	•	Check if the scanner driver for your
		machine is installed in your system.
		Open Unified Driver configurator, switch
		to Scanners configuration, then press
		Drivers. Make sure that driver with a
		name corresponding to your machine's
		name is listed in the window. Check if the
		port is not busy. Since functional
		components of MFP (printer and
		scanner) share the same I/O interface
		(port), the situation of simultaneous
		access of different “consumer”
		application to the same port is possible.
		To avoid possible conflicts, only one of
		them at a time is allowed to gain control
		over the device. The other “consumer”
		will encounter “device busy” response.
		This can usually happen while starting
		scan procedure, and appropriate
		message box appears.
	• To identify the source of the problem, you
		should open ports configuration and
		select the port assigned to your scanner.
		port's symbol /dev/mfp0 corresponds to
		LP:0 designation displayed in the
		scanners’ options, /dev/mfp1 relates to
		LP:1 and so on. USB ports start at /dev/
		mfp4, so scanner on USB:0 relates to /
		dev/mfp4 respectively and so forth
		sequentially. In the Selected port pane
		you can see if the port is occupied by
		some other application. If this is the case,
		you should wait for completion of the
		current job or you should press Release
		port button, if you are sure that the
		present port's owner is not functioning
		properly.

Problem		Possible cause and solutions
The machine does	•	Check if a document is loaded into the
not scan.		machine.
	•	Check if your machine is connected to
		the computer. Make sure if it is
		connected properly if an I/O error is
		reported while scanning.
	•	Check if the port is not busy. Since
		functional components of MFP (printer
		and scanner) share the same I/O
		interface (port), the situation of
		simultaneous access of different
		“consumer” application to the same port
		is possible. To avoid possible conflicts,
		only one of them at a time is allowed to
		gain control over the device. The other
		“consumer” will encounter “device busy”
		response. This can usually happen while
		starting scan procedure, and appropriate
		message box will be displayed.
		To identify the source of the problem, you
		should open ports configuration and
		select the port assigned to your scanner.
		port’s symbol /dev/mfp0 corresponds to
		LP:0 designation displayed in the
		scanners’ options, /dev/mfp1 relates to
		LP:1 and so on. USB ports start at /dev/
		mfp4, so scanner on USB:0 relates to /
		dev/mfp4 respectively and so forth
		sequentially. In the Selected port pane
		you can see if the port is occupied by
		some other application. If this is the case,
		you should wait for completion of the
		current job or should press the Release
		port button, if you are sure that the
		present port’s owner is not functioning
		properly.
I cannot scan via	•	Check if Gimp Front-end has
Gimp Front-end.		“Xsane: Device dialog.” on the “Acquire”
		menu. If not, you should install Xsane
		plug-in for Gimp on the your computer.
		You can find Xsane plug-in package for
		Gimp on Linux distribution CD or Gimp
		home page. For the detail information,
		refer to the Help for Linux distribution CD
		or Gimp Front-end application.
	If you wish to use other kind of scan
	application, refer to the Help for
	application.

11.13 <Troubleshooting>