Lexmark 4402-001 manual Print Quality Service Check, Go to the System Board Removal on

4402-001

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	Printhead Carrier	Reseat the printhead cable in the system board
	Assembly	and check the following parts for wear or damage:
		• Printhead Cartridge Latch
		• Latch Spring
		• Carrier
4	System Board	Perform the “Test Page” on page 3-1. Look for a
	Printhead Carrier	break in the diagonal line of the nozzle test
	Assembly	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 the symptom remains, replace the system board.
		Go to the “System Board Removal” on
		page 4-12.
5	Maintenance	Intermittent nozzle failures can be caused by worn
	Station	parts in the maintenance station. Go to the
		“Maintenance Station Removal” on page 4-14,
		and then return to this check.

Diagnostic Information 2-15