Samsung CLX-8380ND User Manual (user Manual) (ver.5.00) (English) - Page 120
Problem, Possible Cause and Solution, Since Unified Linux Driver locks port while
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Problem The machine does not scan. I cannot scan via Gimp Front-end. I encounter error "Cannot open port device file" when printing a document. Possible Cause and Solution • Check if a document is loaded into the machine. • Check if your machine is connected to the computer. Make sure 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 for different "consumer" applications to the same port is possible. To avoid possible conflicts, only one of them is allowed to gain control over the device at a time. The other "consumer" will encounter "device busy" response. This usually happens while starting the scan procedure, and an 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 you should press the Release port button, if you are sure that the port owner is not functioning properly. • Check if Gimp Front-end has "Xsane: Device dialog." on the "Acquire" menu. If not, you should install the Xsane plug-in for Gimp on your computer. You can find Xsane plug-in package for Gimp on Linux distribution CDs or on the Gimp home page. For detailed information, refer to Help for Linux distribution CD or Gimp Front-end application. If you wish to use an other kinds of scan applications, refer to the Help for application. Please avoid changing print job parameters (via LPR GUI, for example) while a print job is in progress. Known versions of CUPS server cut off the print jobs whenever print options are changed and then try to restart the job from the beginning. Since Unified Linux Driver locks port while printing, the abrupt termination of the driver keeps the port locked and therefore unavailable for subsequent print jobs. If this situation occurred, try to release the port. Problem Some color images come out all black. Some color images come out in unexpected color. The machine does not print whole pages and its output is half page printed. Possible Cause and Solution This is a known bug in Ghostscript (until GNU Ghostscript version 7.05) when the base color space of the document is indexed color space and it is converted through CIE color space. Because Postscript uses CIE color space for Color Matching System, you should upgrade Ghostscript on your system to at least GNU Ghostscript version 7.06 or later. You can find recent Ghostscript versions at www.ghostscript.com. This is a known bug in Ghostscript (until GNU Ghostscript version 7.xx) when the base color space of the document is indexed RGB color space and it is converted through CIE color space. Because Postscript uses CIE color space for Color Matching System, you should upgrade Ghostscript on your system to at least GNU Ghostscript version 8.xx or later. You can find recent Ghostscript versions at www.ghostscript.com. It is a known problem that occurs when a color printer is used on version 8.51 or earlier of Ghostscript, 64-bit Linux OS, and reported to bugs.ghostscript.com as Ghostscript Bug 688252. The problem is solved in AFPL Ghostscript v. 8.52 or above. Download the latest version of AFPL Ghostscript from http://sourceforge.net/ projects/ghostscript/ and install it to solve this problem. 12.24