Lexmark 4026-0XX manual Fuser Operation, Fuser Control

4026-0XX

Fuser Operation

Fuser Mode	Printer Action
Warm-Up Mode	When the printer power is turned on
	the fuser lamp turns on until the hot
	roll temperature reaches approxi-
	mately 172 degrees centigrade.
Standby Mode	The hot roll temperature reaches
	approximately 156 degrees centi-
	grade. If this temperature is main-
	tained for three minutes, the printer
	switches to low temperature standby
	mode and the hot roll is maintained
	at 112 degrees centigrade.
Print Cycle	The hot roll is maintained at 172
	degrees centigrade if the engine
	board receives a print command
	from the controller board.
	Note: The hot roll temperature is
	slightly higher on models 06C and
	06F during the print cycle.
Fuser Control

The thermistor detects the hot roll temperature and sends a corresponding analog signal to the engine board. The engine board turns the lamp on or off depending on the analog signal from the thermistor.

If the thermistor detects a high temperature failure but the fuser lamp does not turn off, the thermal fuse opens (thermostat on models 4026-06C and 06F) and the engine board turns the fuser lamp off.

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