Lexmark C750 User Reference Manual page 127

PCL SmartSwitch
Purpose:
To configure the printer so it automatically switches to PCL emulation when a print job received
through the LocalTalk port requires it, regardless of the default printer language.
Values:
On* Printer examines data on the LocalTalk interface and selects PCL emulation if the data
indicates that is the required printer language.
Off 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.
See also:
PS SmartSwitch;
PS SmartSwitch
Purpose:
To configure the printer so it automatically switches to PostScript emulation when a print job received
through the LocalTalk port requires it, regardless of the default printer language.
Values:
On* Printer examines data on the LocalTalk interface and selects PostScript emulation if the data
indicates that is the required printer language.
Off 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.
See also:
PCL SmartSwitch;
Printer Language
Printer Language
125