Canon IR2800, IR3300, IR2200 manual Adjustlaserpve-Ofst, Adjustlaserla-Off

CHAPTER 3 LASER EXPOSURE SYSTEM
	J307	J500			Laser assembly
1	GND	4
	DATA(+) [1]			[6]
2		3	Laser		Laser
	DATA(-) [1]
3		2
	GND		drive
4		1			Intensity
			circuit
					monitor [5]
	J310	J501
1	GND	5
	+5V
2		4
	DAOUT [7]
3		3
	S/H [2]
4		2
	LDE* [3]
5		1
		Laser driver PCB
					Laser unit
A14	J312INT_TOPO_PD [4]
					Image leading edge
					sensor (PS12)

A8

J304 Y_REG_PD [8]

DC controller

PCB

Horizontal registration paper sensor (PS11)

REF.

F03-301-01

The laser power of the laser unit is adjusted at the factory, and it must not be adjusted in the field.

ADJUST>LASER>PVE-OFST

Use it to adjust the position of laser illumination.

ADJUST>LASER>LA-OFF

Use it to adjust the timing of laser trailing edge de-activation for non-de- fault size papers.

3-6 P COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001