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- 3

14.1.5 Making Checks on the Printer Side (Checking for fogging) .......................................................... 14- 4

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- 7

14.2 Image Adjustments................................................................................................................................... 14- 11

14.2.1 Standards of Image Position............................................................................................................ 14- 11

14.2.2 Checking the Image Position ........................................................................................................... 14- 11

14.2.3 Adjusting Side Registration .............................................................................................................. 14- 11

14.2.4 Adjusting the Image Leading Edge Margin.................................................................................... 14- 13

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- 16

14.4.1 When Replacing the Laser Scanner Unit....................................................................................... 14- 16

14.4.2 Checking the Laser Power ............................................................................................................... 14- 16

14.5 Image Formation System ........................................................................................................................ 14- 17

14.5.1 Adjusting the Height of the Charging Wire .................................................................................... 14- 17

14.6 Fixing System............................................................................................................................................ 14- 17

14.6.1 Adjusting the Lower Roller Pressure (nip) ..................................................................................... 14- 17

14.6.2 Points to Note When Mounting the Fixing Heater ........................................................................ 14- 17

14.7 Electrical Components ............................................................................................................................. 14- 18

14.7.1 After Replacing the Hard Disk ......................................................................................................... 14- 18

14.7.2 After Replacing the Main Controller................................................................................................ 14- 18

14.7.3 After Replacing the DC Controller PCB ......................................................................................... 14- 20

14.7.4 After Replacing the Reader Controller PCB .................................................................................. 14- 20

14.7.5 After Replacing the Reader Controller PCB .................................................................................. 14- 20

14.7.6 After Replacing the HV-DC PCB ..................................................................................................... 14- 21

14.7.7 When Replacing the Potential Sensor/Potential Control PCB.................................................... 14- 21

14.7.8 Checking the Surface Potential Control System........................................................................... 14- 22

14.7.9 Checking the Environment Sensor ................................................................................................. 14- 24

14.8 Pickup/Feeding System ........................................................................................................................... 14- 25

14.8.1 Orientation of the Deck/Cassette Pickup Roller............................................................................ 14- 25

14.8.2 Orientation of the Deck/Cassette Separation Roller .................................................................... 14- 25

14.8.3 Orientation of the Feeding Roller of the Deck/Cassette Pickup Assembly .............................. 14- 25

14.8.4 Orientation of the Pickup Roller of the Manual Feed Tray/Side Paper ..................................... 14- 25

14.8.5 Orientation of the Feeding Roller of the Manual Feed Tray........................................................ 14- 26

Contents

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