HP 6L pro, 6L Gold manual Basic sequence of operation, Printer timing Period Timing Purpose

Basic sequence of operation

The Formatter PCA and the DC Controller PCA share information during printer operation. The DC Controller-to-Formatter Connector (J201) forms a link that operates as a serial data bus. This allows printer status, command information, and dot-image data to be passed between the two PCAs.

Figure 5-7 shows the general timing of the printer events. The following events take place during normal printer operation:

Table 5-2 Printer timing

Period	Timing	Purpose
WAIT	From when the paper is inserted to the end	Clear the drum surface potential and clean
	of Main Motor initial rotation.	the Transfer Roller.
STBY (standby)	From the end of the WAIT or the LSTR	Maintain the printer in ready state.
	period until the input of the PRNT signal
	from the Formatter. Or from the end of the
	LSTR period until power OFF.
INTR (initial rotation)	From the input of the PRNT signal from the	Stabilize the photosensitive drum
	Formatter until the laser diode intensity has	sensitivity in preparation for printing. Also
	been stabilized.	clean the Transfer Roller.
PRNT	From the end of initial rotation until the	Form images on the photosensitive drum
	Scanner Motor stops.	based on the /VDO signal from the
		Formatter and transfer the image to paper.
LSTR (last rotation)	From the primary voltage (DC) OFF until	Deliver the last sheet of paper. Also clean
	the Main Motor stops.	the Transfer Roller.
	If another PRNT signal is sent from the
	Formatter, the printer returns to the INTR
	period. If not, it returns to the STBY period.
	Refer to the Timing Diagrams on the following pages.

66 Functional overview EN