Samsung SCX-4500 manual Common Linux problems, Problem Possible cause and solutions

Common Linux problems

Problem		Possible cause and solutions
The machine does not	•	Check if the printer driver is installed in your
print.		system. Open Unified Driver configurator
		and switch to the Printers tab in Printers
		configuration window to look at the list of
		available printers. Make sure that your
		machine is displayed on the list. If not,
		please, invoke Add new printer wizard to
		set up your device.
	•	Check if the printer has started. Open
		Printers configuration and select your
		machine on the printers list. Look at the
		description in the Selected printer pane. If
		its status contains “(stopped)” string,
		please, press the Start button. After that
		normal operation of the printer should be
		restored. The “stopped” status might be
		activated when some problems in printing
		occurred. For instance, this could be an
		attempt to print a document when a port is
		claimed by a scanning application.
	•	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” applications to the
		same port are 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. You should open ports
		configuration and select the port assigned
		to your printer. 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 Release port button, if you
		are sure that the present owner is not
		functioning properly.
	•	Check if your application has special print
		option such as “-oraw”. If “-oraw” is
		specified in the command line parameter
		then remove it to print properly. For Gimp
		front-end, select “print” -> “Setup printer”
		and edit command line parameter in the
		command item.

Problem		Possible cause and solutions
The machine does not	•	Check if your machine is attached to your
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.

9.14 <Troubleshooting>