Lexmark 34TT027, 34TT001, X748x, X746de, X746x Understanding the printer menus 156, Serial Buffer

Understanding the printer menus		156
	Use	To
	PCL SmartSwitch	Set the printer to automatically switch to PCL emulation when a print job received
	On	through a serial port requires it, regardless of the default printer language.
	Off	Notes:
		• On is the factory default setting.
		• When set to Off, the printer does not examine incoming data. The printer uses
		PostScript emulation if PS SmartSwitch is set to On. It uses the default printer
		language specified in the Setup menu if PS SmartSwitch is set to Off.
	PS SmartSwitch	Set the printer to automatically switch to PS emulation when a print job received
	On	through a serial port requires it, regardless of the default printer language.
	Off	Notes:
		• On is the factory default setting.
		• When set to Off, the printer does not examine incoming data. The printer uses
		PCL emulation if PCL SmartSwitch is set to On. It uses the default printer
		language specified in the Setup menu if PCL SmartSwitch is set to Off.
	NPA Mode	Set the printer to perform the special processing required for bidirectional
	On	communication following the conventions defined by the NPA protocol.
	Off	Notes:
	Auto	• Auto is the factory default setting. Auto sets the printer to examine data,
		determine the format, and then processes it appropriately.
		• When set to On, the printer performs NPA processing. If the data is not in NPA
		format, it is rejected as bad data.
		• When set to Off, the printer does not perform NPA processing.
		• Changing this setting from the printer control panel and then exiting the
		menus causes the printer to restart. The menu selection is then updated.
	Serial Buffer	Set the size of the serial input buffer.
	Disabled	Notes:
	Auto
		• Auto is the factory default setting.
	3K to [maximum size allowed]
		• Disabled turns off job buffering. Any jobs already buffered on the disk are
		printed before normal processing is resumed.
		• The serial buffer size setting can be changed in 1‑KB increments.
		• The maximum size allowed depends on the amount of memory in the printer,
		the size of the other link buffers, and whether Resource Save is set to On or
		Off.
		• To increase the maximum size range for the Serial Buffer, disable or reduce
		the size of the parallel, serial, and network buffers.
		• Changing this setting from the printer control panel and then exiting the
		menus causes the printer to restart. The menu selection is then updated.