HP Enterprise 500 manual 1Sequence of operation, Period Duration Description

Sequence of operation

The DC controller PCA controls the operating sequence, as described in the following table.

NOTE: The terms fusing and fixing are synonymous.

Table 1-1Sequence of operation

Period	Duration	Description
Waiting	From the time the power is turned on,	●	Heats the fuser sleeve
	the door is closed, or when the product	●	Pressurizes the fuser pressure roller
	exits Sleep mode until the product is
	ready for printing	●	Detects the print cartridges
		●	Detects the home position for the
			primary transfer roller and the
			developing unit
		●	Cleans the secondary transfer roller
Standby	From the end of the waiting sequence or	●	The product is in the READY state.
	the last rotation until the formatter	●	The product enters Sleep mode
	receives a print command or until the
	product is turned off		after the specified length of time.
		●	The product calibrates if it is time
			for an automatic calibration.
Initial rotation	From the time the formatter receives a	●	Activates the high-voltage power
	print command until the paper enters the		supply
	paper path	●	Prepares each laser/scanner unit
		●	Warms the fuser to the correct
			temperature
Printing	From the time the first sheet of paper	●	Forms the image on the
	enters the paper path until the last sheet		photosensitive drums
	has passed through the fuser	●	Transfers the toner to the paper
		●	Fuses the toner image onto the
			paper
		●	Performs calibration after a
			specified number of pages
Last rotation	From the time the last sheet of paper	●	Moves the last printed sheet into
	exits the fuser until the motors stop		the output bin
	rotating	●	Stops each laser/scanner unit
		●	Discharges the bias from the high-
			voltage power supply

ENWW Basic operation 3