Lexmark 1020 manual Print Quality Service Check, FRU / Function Action

4078-00X

Print Quality Service Check

	FRU / Function	Action
1	Print Cartridge	Be sure the machine contains a good print
		cartridge.
2	Color Print	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
		print cartridge). This problem resolves quickly as
		the print 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 cables in the system board
	Assembly	and check the following parts for wear or damage:
		•	Print Cartridge Latch
		•	Latch Spring
		•	Carrier
4	System Board	•	Run the “Test Page” on page 3-8 . Look for a
	Printhead Cable		break in the diagonal line of the test pattern. A
			broken line indicates one or more print nozzles
	Rubber Backer
			are not working. Run the test again to verify the
			failure. If there are even breaks in the diagonal
			line similar to the pattern shown below, ensure
			the printhead cables are connected properly. If
			the symptom remains, replace the system
			board.
		If there is a single break or random breaks in the
		diagonal line check the following:
		• Check the gold-plated contacts, on the end of
			the cable that connect to the carrier, for dirt and
			wear. Use only a clean dry cloth to clean the
			contacts. Also check the cable for damage. You
			may need to remove the cable from the carrier
			to inspect it.
		• A worn rubber backer results in poor contact
			between the printhead cable and the print
			cartridge. Check the rubber backer for wear.

Diagnostic Information 2-13