Brother MFC-4820C Servicehandleiding - Pagina 3

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CHAPTER 4 THEORY OF OPERATION

4.1

OVERVIEW ......................................................................................................................4-1

4.2

MECHANISMS .................................................................................................................4-2

4.2.1

Document Scanner Mechanism ...........................................................................4-4

4.2.2

Paper Feeding Mechanism ..................................................................................4-6

4.2.2.1

Auto Sheet Feeder (ASF) mechanism .........................................................4-7

4.2.2.2

Paper feeding and ejection mechanism.......................................................4-9

4.2.3

Printing mechanism............................................................................................4-11

4.2.3.1

Ink supply and ink jet mechanism ..............................................................4-12

4.2.3.2

Head cap mechanism ................................................................................4-21

4.2.3.3

Purging mechanism ...................................................................................4-22

4.2.3.4

Carriage drive mechanism .........................................................................4-29

4.2.4

Sensors and Actuators .......................................................................................4-31

4.3

CONTROL ELECTRONICS...........................................................................................4-34

4.3.1

Configuration ......................................................................................................4-34

CONTENTS