14.1 Image Adjustment Basic Procedure ...........................................................................................................................14-1

14.1.1 Making Pre-Checks.................................................................................................................................................................. 14-1

14.1.2 Making Checks on the Printer Side (Checking the Images) .................................................................................................... 14-1

14.1.3 Making Checks on the Printer Side (Checking the Density Slope) ......................................................................................... 14-2

14.1.4 Making Checks on the Printer Side (Checking the Solid Black Density) ............................................................................... 14-2

14.1.5 Making Checks on the Printer Side (Checking for fogging) ................................................................................................... 14-3

14.1.6 Making Checks on the Printer Side (Checking Halftone Density) .......................................................................................... 14-4

14.1.7 Making Checks on the Reader Unit ......................................................................................................................................... 14-5

14.1.8 Potential Control System Conversion Table............................................................................................................................ 14-8

14.2 Image Adjustments ..................................................................................................................................................14-12

14.2.1 Standards of Image Position .................................................................................................................................................. 14-12

14.2.2 Checking the Image Position ................................................................................................................................................. 14-12

14.2.3 Adjusting Side Registration ................................................................................................................................................... 14-12

14.2.4 Adjusting the Image Leading Edge Margin........................................................................................................................... 14-14

14.2.5 Adjusting the Left/Right Non-Image Width .......................................................................................................................... 14-14

14.2.6 Adjusting the Leading Edge Non-Image Width .................................................................................................................... 14-14

14.3 Scanning System ......................................................................................................................................................14-14

14.3.1 When Replacing Components of the Scanning System......................................................................................................... 14-14

14.3.2 When Replacing Components of the Scanning System......................................................................................................... 14-14

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

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