Lexmark 5021-0XX manual Go to 990-Transfer belt unit service check on

5021-0XX

Error code	Action
990	Indicates unstable transfer belt rotation; color
Transfer belt (transfer	matching cannot be secured.
	Go to “990—Transfer belt unit service check” on
unit) error
	page 2-65.
991	Indicates a problem with transfer roller cable
Transfer roller clutch	connection.
	Go to “991—Transfer roller clutch service check”
error
	on page 2-67.
992	Indicates a problem with transfer unit cleaning roller
Cleaning roller clutch	clutch cable connection.
	Go to “992—Transfer belt cleaning roller clutch
error
	service check” on page 2-68.
993	Indicates a problem with fuser clutch cable
Fuser clutch error	connection.
	Go to “993—Fuser clutch service check” on
	page 2-69.
994	Indicates marker on OPC belt (photodeveloper
OPC belt marker	cartridge) is not being properly detected by marker
	sensor.
sensor error
	Go to “994—OPC belt marker sensor service
	check” on page 2-70.
995	Indicates a problem with HVPS charging voltage
Charger HV unit error	supplied to the OPC (photodeveloper cartridge)
	charging unit.
	Go to “995—High voltage power supply (HVPS)
	service check” on page 2-72.
996	Go to “996—Low voltage power supply (LVPS)
LVPS error	service check” on page 2-74.

2-8Service Manual