Brother HL-1040, HL-1020 manual Chapter II Theory of Operation, General Block Diagram HL-820/1020

CHAPTER II THEORY OF OPERATION

1.ELECTRONICS

1.1General Block Diagram

HL-820/1020

Fig. 2-1 shows a general block diagram of the HL-820/1020 printer.

Low-voltage power supply block

High-voltage power supply block

Control system
	device
Interface block	External
Video control block
Engine control block
Operation block
(Operation	panel)

Erase lamp

Laser scanner unit		Drive block	Paper tray unit
		(Stepping motor)
			Paper tray
Drum unit			Manual feed
	Transfer block
		Cleaner	Fixing unit
Developing	Drum
block		block
Charging			Paper eject block
block
			Paper feed system
	Toner cartridge

Image generation system

Fig. 2-1

II-1