Lexmark Printer, J110 manual Print Quality Service Check, 4085-001

4085-001

Print Quality Service Check

Note: Before troubleshooting any print quality problem, be sure the cartridge is in good condition. Set print quality to normal and be sure the correct paper type is selected in the Paper Menu.

	FRU	Action
		The machine print quality can look poor as a result
		of either faulty printheads or poor carrier to
		printhead electrical contact. Generally random
		missing nozzles indicate a printhead failure.
		However, more patterned print quality defects may
		be caused by poor carrier to printhead electrical
		contact or electrical interface problems with the
		carrier cable, carrier card, or engine card. Print the
		‘Contacts Page’ in diagnostics to evaluate for
		electrical interface errors.
1	Printhead Carrier	Print the 'Contacts Page' in diagnostics. Look for
	Assembly	breaks in the diagonal lines that are printed on the
		page. If the missing nozzles are patterned, the
		problem could be pogo pin to printhead tab circuit
		contact. Remove the printhead and clean the tab
		circuit with a clean, lint-free, damp cloth. Inspect
		the carrier for bent pogo pins, or for contamination
		on the pogo pins. Clean the pogo pins only with a
		clean, lint-free cloth. (care should be taken to
		avoid contact with the pogo pins that contact the
		ink tank memory chips. These pins are lubricated
		with a grease to minimize wear and prevent pogo
		pin damage. This grease should not be smeared
		on the surrounding pogo pins as it may trap
		contamination and cause contact failures).
		Note: Unplug the printer before cleaning
		contacts.
2	Printheads	If the error is random missing nozzles, conduct a
		clean as described on page 3-8. Try cleaning the
		printhead nozzle plate by holding a damp cloth
		against the nozzle plate for about three seconds.
		Gently blot and wipe dry. Replace if necessary.
3	Carrier Cable	If the missing nozzles are patterned, the problem
		could be the carrier cable. Inspect for damage
		and replace if necessary. Check that the carrier
		cable connections are clean and secure.

Diagnostic Information 2-65