Lexmark 21Z0300 Technical Reference - Page 182
Password for an Entire Device
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3-86 PJL Syntax: @PJL DEFAULT LRESOURCE:"device:filename.filetype" LRWLOCK="password"[] @PJL DEFAULT LRESOURCE:"device:filename.filetype" LWLOCK="password"[] The file name used depends on whether you wish to put a password on a font or a macro. The file name for a font is a five digit ID from the print directory page (add zeros to the left of the ID to fill the five digits) followed by a three digit instance number. The first time a font is downloaded after a flash has been formatted, the instance number is 0. File types are described under filename in "Table 3-9: Printer Unique LRESOURCE Variables" on page 3-45. For example, to write password protect a PCL emulation bitmapped font (file type of p5bitmap) with an ID of 127, which has not been downloaded since flash was formatted: @PJL DEFAULT LRESOURCE:"flash:00127000.p5bitmap" LWLOCK="password"[] To password protect a macro, the file name is the ID taken from the print directory page, followed by the file type. For example, to read/write password protect a PCL emulation macro (file type is p5macro) saved to flash with an ID of 1023: @PJL DEFAULT LRESOURCE:"flash:1023.p5macro" LRWLOCK="password"[] Note: If the file name is incorrect, the printer applies the password to the entire device. Password for an Entire Device If you want to set a password on a device, not just a single file, omit the file name. LRWLOCK with DEFAULT specified locks a device for reading and writing. LWLOCK with DEFAULT specified locks a device for writing only. Syntax: @PJL DEFAULT LRESOURCE:"device:" LRWLOCK="password"[] @PJL DEFAULT LRESOURCE:"device:" LWLOCK="password"[]