Key operator programs — 54Key operator code changeThis program is used to change the keyoperator code.The key operator must register a key operatorcode number and use this number to gainaccess to key operator programs. Only one keyoperator code number can be registered.The factory has registered five zeros (00000) asthe code number to allow initial access to theprograms. It is recommended that the keyoperator use the factory number for initial entryinto the programs and then change the numberusing the programDefault settingsThese programs are used to adjust the settingsof various printer functions from the factorydefault settings or to cancel the settings.Print density levelThis program is used to adjust the lightness ordarkness of prints. The print density level canbe selected from the following options:LIGHTESTLIGHTERNORMALDARKERDARKESTDisable notice page printingThis program is used to disable notice pageprinting.Disable test page printingThis program is used to disable test pageprinting. If this program is set, printer test pageprinting using custom settings cannot beexecuted.A4/LT auto selectIf this program is set, and printing on toLetter (8½" x 11") size paper is selected but notavailable, the printer will automaticallysubstitute A4 size paper in place of Letter if A4paper is available.Letter size paper cannot be automaticallyselected in place of A4.Interface settingsThese programs are used to control datatransmitted to the parallel port or network portof this printer.Hexadecimal dump modeThis program is used to output the print datafrom a computer in the hexadecimal dumpformat with corresponding characters (ASCII).This program is used to check propertransmission of print data from the computer tothe printer.Output example of hexadecimal dump mode(A4 portrait)PDL for parallel portThis program is used to specify a printerlanguage to emulate when the printer isconnected to a computer through a parallel port.> It is recommended to leave the defaultsetting at AUTO (unless an error due tothis setting occurs frequently.PDL for network portThis program is used to specify a printerlanguage to emulate when the printer isconnected to a computer through the networkport. The setting items are the same as those ofPDL for parallel port.> It is recommended to leave the defaultsetting at AUTO (unless an error due tothis setting occurs frequently.Setting item DescriptionAuto The printer language will switchautomatically in accordancewith data from the computer.PostScript PostScript is used to print thedata from the computer.PCL PCL is used to print the datafrom the computer.