Lexmark 5021-0XX Go to 920-Fuser thermistor service check on, Engine controller board removal on

5021-0XX

Error code	Action
920	Go to “920—Fuser thermistor service check” on
Fuser thermistor	page 2-60.
error
921/922/923/924/925	Go to “921,922,923,924,925—Fuser assembly
Fuser temperature	service check” on page 2-61.
error
92X	Fuser is in a maintenance state and needs to be
Fuser exhausted	replaced before any other action can be taken.
	Replace fuser assembly (see “Fuser assembly
	removal” on page 4-9) and note whether any error
	code exists.
	Note: Fuser is a customer-order supply.
930	Indicates that printhead laser output is low.
Laser power error	Go to “930,931,932—Laser unit assembly service
	check” on page 2-62.
931	Indicates that printhead laser scanning beam is not
Beam detector error	detected by the beam sensor.
	Go to “930,931,932—Laser unit assembly service
(BDT)
	check” on page 2-62.
932	Indicates abnormal rotation of printhead scanner
Scanner motor error	motor.
	Go to “930,931,932—Laser unit assembly service
(SM)
	check” on page 2-62.
939	Indicates that the RIP board processor cannot
RIP to engine	communicate with processor. Remove and reinstall
	RIP board. Go to “RIP board removal” on
communication
	page 4-45. Ensure RIP board makes proper
	connection with engine controller board connector.
	Ensure engine controller board is properly installed.
	If error persists, replace RIP board. If error still
	persists, replace engine controller board. See
	“Engine controller board removal” on page 4-55.
945	Turn power off and then back on.
Engine board	If error still exists, replace engine controller board.
NVRAM error	Go to “Engine controller board removal” on
	page 4-55.

2-4Service Manual