Lexmark X644E User Manual
Download Technical reference manual of Lexmark T642dtn All in One Printer, Finishers for Free or View it Online on All-Guides.com. This version of Lexmark T642dtn Manual compatible with such list of devices, as: X644E, X646e MFP, X850e, X852e, X854e
Brand: Lexmark
Category: All in One Printer , Finishers , Printer , Printer Accessories
Type: Technical reference manual
Model: Lexmark T642dtn , Lexmark X644E , Lexmark X646e MFP , Lexmark X850e , Lexmark X852e , Lexmark X854e
Pages: 416
Memory
6-8
By using s, administrators can ensure data integrity and proper authorization. If flash
memory is write protected, for example, users cannot delete existing files, format the
device, or download new files to the device (without first specifying the ). A specific
example might be a macro file of an authorizing signature that is stored on flash
memory with a Read/Write . This ensures that only those authorized can use the
signature. All other files (fonts, letterhead, macros) can be unprotected for general
use.
s are set, declared, retracted, and deleted using the PJL commands or the MarkVision
Professional utility. See “Protecting a File or Device” on page 3-93.
Rewriting the Flash Content
Be aware that once a bit on the flash memory is turned from 1 (binary 1) to 0 (binary
0), it cannot be changed back to binary 1 without a complete flash memory format. As
PostScript emulation file operators write data to flash memory, the printer microcode
software verifies that none of the bits being set to binary 1 is binary 0. If any attempt
is made to change a 0 bit back to 1, a PostScript emulation ioerror occurs.
When a device is formatted, all locations are set to binary 1. This is also the reason
descriptions and s can be set only once for files on flash memory.