(2) Main charger unit...............................................................................................................................2-1-5

2-1-3 Optical section ........................................................................................................................................2-1-6

(1) Scanner unit ......................................................................................................................................2-1-6

(2) Image scanner unit (ISU) ..................................................................................................................2-1-7

(3) Laser scanner unit.............................................................................................................................2-1-9

2-1-4 Developing section................................................................................................................................2-1-11

2-1-5 Transfer/separation section ..................................................................................................................2-1-12

2-1-6 Cleaning section ...................................................................................................................................2-1-13

2-1-7 Fuser section ........................................................................................................................................2-1-14

2-1-8 Paper exit section .................................................................................................................................2-1-16

2-1-9 Duplex/conveying section .....................................................................................................................2-1-18

2-1-10 DP section.............................................................................................................................................2-1-19

2-2 Electrical Parts Layout

2-2-1 Electrical parts layout..............................................................................................................................2-2-1

(1) PWBs ................................................................................................................................................2-2-1

(2) Switches and sensors .......................................................................................................................2-2-3

(3) Other electrical components..............................................................................................................2-2-4

(4) DP .....................................................................................................................................................2-2-5

2-3 Operation of the PWBs

2-3-1 Power source PWB.................................................................................................................................2-3-1

2-3-2 Control PWB ...........................................................................................................................................2-3-3

2-3-3 Scanner PWB .........................................................................................................................................2-3-9

2-3-4 DP driver PWB......................................................................................................................................2-3-12

2-4 Appendixes

2-4-1 Appendixes .............................................................................................................................................2-4-1

(1) Wiring diagram ..................................................................................................................................2-4-1

(2) Repetitive defects gauge...................................................................................................................2-4-3

(3) Maintenance parts list .......................................................................................................................2-4-4

Table of Contents