Lexmark 5021-0XX manual Toner drop service check, Auger removal on, Waste toner feeder removal on

5021-0XX

Toner drop service check

A toner spot stain on paper is caused by ambient toner within printer engine.

	Problem area	Action
1	Waste toner feed system	Toner drops on the transfer drum due
	• Waste toner auger	to a breakdown of the waste toner
		feed system.
	• Waste toner feeder
		• Waste toner auger mylar is
			damaged. Examine and replace if
			defective. See “Waste toner
			auger removal” on page 4-72.
		•	Waste toner is not properly
			collected by waste toner feeder.
			Check to ensure that waste toner
			feeder is not compacted. If so,
			replace waste toner feeder. See
			“Waste toner feeder removal” on
			page 4-42.
		•	Check for waste toner in printer. If
			found, clean and vacuum printer.
2	Transfer unit cleaning roller	Cleaning roller is faulty.
		Remove transfer belt unit (see
		“Transfer belt unit removal” on
		page 4-7). Replace cleaning roller.
		See “Transfer belt cleaning roller
		removal” on page 4-6. Prior to
		installation of new cleaning roller,
		thoroughly clean cleaning roller
		installation area.
		Check for waste toner in printer. If
		found, clean and vacuum printer.

2-116Service Manual