Lexmark C520 Reference Manual page 35

Menu item Purpose
Mac Binary PS Configures the printer to process
Macintosh binary PostScript print
jobs.
Standard USB and USB <x>
Use these menu items to change printer settings affecting a Universal Serial Bus (USB) port (USB <x>).
Menu item Purpose
PCL Configures the printer so it
SmartSwitch automatically switches to
PCL emulation when a print job
received through the USB port
requires it, regardless of the default
printer language.
PS SmartSwitch Configures the printer so it
automatically switches to
PostScript emulation when a print
job received through the USB port
requires it, regardless of the default
printer language.
NPA Mode Specifies whether the printer
performs the special processing
required for bidirectional
communication, following the
conventions defined in the Network
Printing Alliance (NPA) Protocol.
Note: Changing this menu item
automatically resets the printer.
Using printer menus
Values
On
Off
*Auto
Values
*On
Off
*On
Off
On
Off
*Auto
Menu Groups
35
Printer processes raw binary
PostScript print jobs from computers
using the Macintosh operating system.
Note: This setting often causes
Windows print jobs to fail.
Printer filters PostScript print jobs
using standard protocol.
Printer processes print jobs from
computers using either Windows or
Macintosh operating systems.
Printer examines the data on the USB
port and selects PCL emulation if the
data indicates that is the required
printer language.
Printer does not examine the incoming
data. The printer uses
PostScript emulation to process the
job if PS SmartSwitch is On, or uses
the default printer language specified
in the Setup Menu if PS SmartSwitch
is Off.
Printer examines data on the USB
interface and selects
PostScript emulation if the data
indicates that is the required printer
language.
Printer does not examine the incoming
data. The printer uses PCL emulation
to process the job if PCL SmartSwitch
is On, or uses the default printer
language specified in the Setup Menu
if PCL SmartSwitch is Off.
Printer performs NPA processing. If
data is not in NPA format, it is rejected
as bad data.
Printer does not perform NPA
processing.
Printer examines the data to determine
the format and then processes it
appropriately.