Brother HL-1040 - Manual (Page 4)

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CONTENTS
CHAPTER I FEATURES AND SPECIFICATIONS ..........................................I-1
1. FEATURES .........................................................................................................................I-1
2. SPECIFICATIONS ..............................................................................................................I-3
2.1 Printing....................................................................................................................................... I-3
2.2 Functions ................................................................................................................................... I-3
2.3 Electrical and Mechanical .......................................................................................................... I-4
2.4 Paper Specification .................................................................................................................... I-5
2.5 Print Delivery.............................................................................................................................. I-5
2.6 Paper ......................................................................................................................................... I-6
2.7 Effective Printing Area ............................................................................................................... I-7
3. SAFETY INFORMATION ....................................................................................................I-9
3.1 Laser Safety (110 - 120V Model only) ....................................................................................... I-9
3.2 FDA Regulations (110 - 120V Model only) ................................................................................ I-9
3.3 Caution for Laser Product ........................................................................................................ I-10
CHAPTER II THEORY OF OPERATION ........................................................ II-1
1. ELECTRONICS..................................................................................................................II-1
1.1 General Block Diagram............................................................................................................. II-1
1.2 Main PCB Block Diagram ......................................................................................................... II-4
1.3 Main PCB.................................................................................................................................. II-7
1.3.1 CPU Core .................................................................................................................... II-7
1.3.2 ASIC ............................................................................................................................ II-9
1.3.3 ROM .......................................................................................................................... II-15
1.3.4 DRAM ........................................................................................................................ II-16
1.3.5 Optional RAM ............................................................................................................ II-17
1.3.6 Optional Serial I/O ..................................................................................................... II-18
1.3.7 EEPROM ................................................................................................................... II-18
1.3.8 Reset Circuit .............................................................................................................. II-19
1.3.9 CDCC I/O .................................................................................................................. II-19
1.3.10 Engine I/O.................................................................................................................. II-21
1.3.11 Paper Feed Motor Drive Circuit ................................................................................. II-23
1.4 Panel Sensor PCB .................................................................................................................. II-24
1.5 Power Supply.......................................................................................................................... II-24
1.5.1 Low-voltage Power Supply ........................................................................................ II-24
1.5.2 High-voltage Power Supply, SR PCB........................................................................ II-25
2. MECHANICS....................................................................................................................II-26
2.1 Overview of Printing Mechanism ............................................................................................ II-26
2.2 Paper Transfer ........................................................................................................................ II-27
2.2.1 Paper Supply ............................................................................................................. II-27
2.2.2 Paper Registration..................................................................................................... II-27
2.2.3 Paper Eject ................................................................................................................ II-28