Lexmark 5016-001 manual Black or Color Spots Service Check, Developer Drive System Service Check

5016-001

Black or Color Spots Service Check

Note: This symptom may require replacement of one or more customer replaceable units, designated as supplies or maintenance items, which are the responsibility of the customer. With the customer's permission, you may need to install an ITM unit or a print cartridge.

	FRU	Action
1	Print Cartridge	Try a new print cartridge.
2	Cleaning Unit	Check the fuser cleaning unit for correct
		operation and signs of contamination. Replace
		the cleaning unit, if any problems are found.
3	ITM Unit	Check the ITM belt for signs of color or black
		toner left on the belt after the a page has
		printed. If toner is found, the ITM is not
		functioning properly. Try a new ITM assembly.
4	Fuser Assembly	Check the backup and hot rolls for signs of toner
		buildup or contamination. If toner buildup is
		found, repair or replace the fuser assembly.

Developer Drive System Service Check

Print quality problems - Either all blank pages, some color, or one color missing from the printed page.

	FRU	Action
1	Print Cartridge(s)	Try a new print cartridge(s).
2	Developer Drive	Check the developer drive gear, timing belt and
	Gear B16	developer sleeve located in the motor mounting
	Timing Belt	stay A assembly for correct operation. If
		problems are found, repair or replace Stay A
	Developer Sleeve	assembly as needed.
		Check the idler pulley, timing belt, developer
	Idler Pulley	decrease gear and spring, located on the right
	Developer	side frame under the motor mounting C
		assembly. If problems are found, repair or
	Decrease Gear	replace any failing FRUs.
	Spring

2-84Service Manual