14.3.3 Adjusting the Position of the No. 1/No. 2 Mirror Base........................................................................................14- 14

14.4 Laser Exposure System ....................................................................................................................... 14- 15

14.4.1 When Replacing the Laser Scanner Unit ...........................................................................................................14- 15

14.5 Image Formation System ..................................................................................................................... 14- 15

14.5.1 Adjusting the Height of the Charging Wire .........................................................................................................14- 15

14.6 Fixing System ....................................................................................................................................... 14- 16

14.6.1 Adjusting the Lower Roller Pressure (nip)..........................................................................................................14- 16

14.6.2 Points to Note When Mounting the Fixing Heater ..............................................................................................14- 16

14.7 Electrical Components.......................................................................................................................... 14- 16

14.7.1 After Replacing the Hard Disk............................................................................................................................14- 16

14.7.2 After Replacing the Main Controller ...................................................................................................................14- 16

14.7.3 After Replacing the DC Controller PCB .............................................................................................................14- 17

14.7.4 After Replacing the Reader Controller PCB.......................................................................................................14- 18

14.7.5 After Replacing the Reader Controller PCB.......................................................................................................14- 18

14.7.6 After Replacing the HV-DC PCB........................................................................................................................14- 18

14.7.7 When Replacing the Potential Sensor/Potential Control PCB ...........................................................................14- 19

14.7.8 Checking the Surface Potential Control System ................................................................................................14- 19

14.7.9 Checking the Environment Sensor.....................................................................................................................14- 21

14.8 Pickup/Feeding System ........................................................................................................................ 14- 21

14.8.1 Orientation of the Deck/Cassette Pickup Roller .................................................................................................14- 21

14.8.2 Orientation of the Deck/Cassette Separation Roller ..........................................................................................14- 21

14.8.3 Orientation of the Feeding Roller of the Deck/Cassette Pickup Assembly ........................................................14- 21

14.8.4 Orientation of the Manual Feed Tray/Side Paper Deck Pickup Roller ...............................................................14- 22

14.8.5 Orientation of the Feeding Roller of the Manual Feed Tray ...............................................................................14- 22

14.8.6 Orientation of the Feeding Roller of the Side Paper Deck .................................................................................14- 22

14.8.7 Adjusting the Pressure of the Deck/Cassette Separation Roller........................................................................14- 22

14.8.8 Adjusting the Pressure of the Pickup/Feeding Roller of the Manual ..................................................................14- 22

14.8.9 Location of the solenoids ...................................................................................................................................14- 23

14.8.10 Position of the Fixing Web Solenoid (SL2).......................................................................................................14- 23

14.8.11 Position of the Delivery Flapper Solenoid (SL3)...............................................................................................14- 23

14.8.12 Position the Fixing/Feeder Unit Locking Solenoid (SL4) ..................................................................................14- 23

14.8.13 Position of the Multifeeder Latch Solenoid (SL6) .............................................................................................14- 24

14.8.14 Position of the Deck (right) Pickup Solenoid (SL7) ..........................................................................................14- 24

14.8.15 Position of the Deck (Left) Pickup Solenoid (SL8) ...........................................................................................14- 24

14.8.16 Position of the Cassette 3/4 Pickup Solenoid (SL9/10)....................................................................................14- 24

14.8.17 Position of the Side Paper Deck Pickup Roller Releasing Solenoid ................................................................14- 24

14.8.18 Fitting the Side Guide Timing Belt of the Manual Feed Tray Assembly ...........................................................14- 25

14.8.19 Fitting the Drive Belt .........................................................................................................................................14- 25

14.8.20 Cleaning the Double-Feed Sensor (transmission) ...........................................................................................14- 25

Chapter 15 Correcting Faulty Images

15.1 Making lnitial Checks .............................................................................................................................. 15- 1

15.1.1 Checking the Side of Installation..........................................................................................................................15- 1

15.1.2 Checking the Originals .........................................................................................................................................15- 1

15.1.3 Checking the Copyboard Cover, Copyboard Glass, and Standard White Plate ..................................................15- 1

15.1.4 Checking the Charging Assemblies .....................................................................................................................15- 1

15.1.5 Cheiking the Develop Unit....................................................................................................................................15- 1

15.1.6 Checking the Paper..............................................................................................................................................15- 1

15.1.7 Checking the Periodically Replaced Parts ...........................................................................................................15- 1

15.1.8 Others ..................................................................................................................................................................15- 1

15.2 Outline of Electrical Components ........................................................................................................... 15- 2

15.2.1 Clutch/Solenoid ....................................................................................................................................................15- 2

15.2.1.1 Clutches ............................................................................................................................................................................... 15- 2

15.2.1.2 Solenoids ............................................................................................................................................................................. 15- 4

Table of Contents