Chapter Ii Theory Of Operation; Electronics; General Block Diagram - Brother HL-1070 - B/W Laser Printer Service Manual

CHAPTER II THEORY OF OPERATION

1.

ELECTRONICS

1.1

General Block Diagram

Fig. 2.1 shows a general block diagram of the HL-1070 printer.
Drum Unit
Developing
Image Generation System
Optional RAM(SIMM)
(Max. 32Mbytes)
Control System
Expansion Memory I/O
Video Control Block
Engine Control Block
Laser Scanner Unit
Transfer Block
Drum
Block
Charging
Block
Toner Cartridge
Optional I/F Board
( RS-232C)
Expansion I/O
Interface Block
Operation Block
(Operation Panel)
Drive Block
(Stepping Motor)
Cleaner
Block
Fig. 2.1
II-1
Parallel
USB
Erase Lamp
Paper Tray Unit
Paper Feeder
Manual Feed
Fixing Unit
Paper Eject Block
Paper Feed System