Theory Of Operation; General Block Diagram - Brother HL-1230 Service Manual

CHAPTER 3
1. ELECTRONICS
1.1

General Block Diagram

HL-1230/1440
Fig. 3-1 shows a general block diagram of the HL-1230/1440 printer.
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THEORY OF OPERATION

Optional RAM (SIMM)
(max. 32Mbytes)
(HL-1440 only)
Control system
Expansion memory I/O
RAM 2MB
(HL-1440 only)
Video control block
Engine control block
Laser unit
Drum unit
Transfer block
Charging
Drum
block
Fig. 3- 1
Developing
block
Toner cartridge
Image generation system
Interface block
(HL-1230: Parallel)
(HL1440: Parallel/USB)
Operation block
(Control panel)
Drive block
(DC motor)
Paper dust
cleaner block
Fig. 3-1
3-1
CHAPTER 3 THEORY OF OPERATION
Paper tray unit
Paper cassette
Manual feed
Fixing unit
Paper eject block
Paper feed system