Brother Facsimile Equipment MFC7420 - Manual (Page 5)

iii Confidential
TABLE OF CONTENTS
CHAPTER 1 PARTS NAMES & FUNCTIONS
1.1 EQUIPMENT OUTLINE............................................................................................. 1-1
1.2 CONTROL PANEL .................................................................................................... 1-2
1.3 COMPONENTS ......................................................................................................... 1-4
CHAPTER 2 SPECIFICATIONS
2.1 GENGERAL............................................................................................................... 2-1
2.1.1 General Specifications ......................................................................................... 2-1
2.1.2 Paper Specifications............................................................................................. 2-2
2.1.3 Printable Area ................................................................................................................ 2-4
2.2 SPECIFICATIONS LIST ............................................................................................ 2-8
CHAPTER 3 THEORY OF OPERATION
3.1 OVERVIEW................................................................................................................ 3-1
3.2 MECHANICAL COMPONENTS ................................................................................ 3-2
3.2.1 Scanner Mechanism ............................................................................................ 3-3
3.2.2 Printing Mechanism.............................................................................................. 3-6
3.2.2.1 Paper supply ................................................................................................ 3-6
3.2.2.2 Push-up function of paper tray..................................................................... 3-8
3.2.2.3 Paper registration....................................................................................... 3-10
3.2.2.4 Paper eject ................................................................................................. 3-11
3.2.2.5 Drum unit.................................................................................................... 3-11
3.2.2.6 Toner cartridge........................................................................................... 3-12
3.2.2.7 Print process .............................................................................................. 3-15
3.2.3 Sensors and Actuators ....................................................................................... 3-18
3.3 CONTROL ELECTRONICS .................................................................................... 3-19
3.3.1 Components ....................................................................................................... 3-19
CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR
4.1 TRANSFERRING RECEIVED FAX DATA ................................................................ 4-1