CHAPTER 3 THEORY OF OPERATION
This chapter gives an overview of the scanning and printing mechanisms as well as the sensors,
actuators, and control electronics. It aids in understanding the basic principles of operation as
well as locating defects for troubleshooting.
3.1
OVERVIEW ......................................................................................................................3-1
3.2
PRINTING MECHANISM .................................................................................................3-2
3.2.1
[ 1 ]
[ 2 ]
[ 3 ]
3.2.2
Laser ASSY PU..................................................................................................3-21
3.2.3
3.2.4
Fusing Unit .........................................................................................................3-23
3.3
3.3.1
Basic Structure ...................................................................................................3-25
[ 1 ]
3.3.2
Control System ...................................................................................................3-32
[ 1 ]
3.3.3
[ 1 ]
Outline .............................................................................................................3-41
[ 2 ]
Circuit...............................................................................................................3-41
3.4
SCANNER MECHANISM...............................................................................................3-45
CONTENTS
Confidential