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Brother
MFC7420
Manuel D’Utilisation
Brother MFC7420 Manuel D’Utilisation
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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
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