Lexmark 4200 Series manual Print quality service check, With belt removal on

4413-XXX

Print quality service check

	FRU / Function	Action
1	Printhead	Be sure the machine contains good print
	Cartridge	cartridges.
2	Color Printhead	Cross contamination of color inks results in
	Cartridge Cross	incorrect colors printed, as when green prints for
	Contamination	yellow, (when yellow and blue are mixed in the
		printhead cartridge). This problem resolves quickly
		as the printhead cartridge is used.
		If cross contamination occurs, check the following:
		• The maintenance station wiper for damage.
		• The printhead nozzle plate was resealed with
		tape.
3	Carrier Assembly	Reseat the printhead cables in the system board
		and check the following parts for wear or damage:
		• Printhead Cartridge Latch
		• Latch Spring
		• Carrier
4	System Board	Print the self test page. To enter the self test page,
	Carrier	press Options button until “Maintenance” is
	Assembly	displayed. Then press the + button until “Test
		Page” is displayed. Press the Select button to print
		the test page. Look for a break in the diagonal line
		of the nozzle test pattern. A broken line indicates
		one or more print nozzles are not working. Run the
		test again to verify the failure.
		Check the gold-plated contacts on the end of the
		printhead carrier cable for dirt, wear, and damage.
		Use only a clean dry cloth to clean the contacts. If
		a problem is found with contacts on the carrier,
		replace the carrier. Go to the “Carrier assembly
		with belt removal” on page 4-18.
		If the symptom remains, replace the system board.
		Go to the “System board removal” on
		page 4-19.
5	Maintenance	Intermittent nozzle failures can be caused by worn
	Station	parts in the maintenance station. Go to the
		“Maintenance station removal” on page 4-17,
		and then return to this check.

Diagnostic information 2-15