Canon iR6570 series Service Manual page 471

Contents
13.1 Image Adjustment Basic Procedure ...........................................................................................................................13-1
13.1.1 Making Pre-Checks.................................................................................................................................................................. 13-1
13.1.2 Making Checks on the Printer Unit (1/2)................................................................................................................................. 13-1
13.1.3 Making Checks on the Printer Unit (2/2)................................................................................................................................. 13-3
13.1.4 Making Checks on the Reader Unit ......................................................................................................................................... 13-5
13.1.5 Checking the Potential System ................................................................................................................................................ 13-8
13.1.6 Checking the Surface Potential Control System .................................................................................................................... 13-11
13.1.7 Potential Control System Conversion Table.......................................................................................................................... 13-14
13.1.8 Emergency Measures for a Fault in the Potential Sensor ...................................................................................................... 13-17
13.2 Image Adjustments ..................................................................................................................................................13-18
13.2.1 Standards of Image Position .................................................................................................................................................. 13-18
13.2.2 Checking the Image Position ................................................................................................................................................. 13-18
13.2.3 Adjusting Side Registration ................................................................................................................................................... 13-18
13.2.4 Adjusting the Image Leading Edge Margin........................................................................................................................... 13-19
13.2.5 Adjusting the Left/Right Non-Image Width .......................................................................................................................... 13-20
13.2.6 Adjusting the Leading Edge Non-Image Width .................................................................................................................... 13-20
13.3 Scanning System ......................................................................................................................................................13-21
13.3.1 After Replacing the Reader Controller PCB.......................................................................................................................... 13-21
13.3.2 When Replacing the CCD Unit.............................................................................................................................................. 13-21
13.3.3 Adjusting the Position of the No. 1/No. 2 Mirror Base ......................................................................................................... 13-21
13.3.4 When Replacing the Platen Board Glass ............................................................................................................................... 13-22
13.3.5 When Replacing the Reading Glass....................................................................................................................................... 13-22
13.3.6 When Replacing the Scanning Lamp..................................................................................................................................... 13-22
13.3.7 When Replacing the Inverter PCB......................................................................................................................................... 13-22
13.4 Laser Exposure System ............................................................................................................................................13-23
13.4.1 When Replacing the Scanner Unit ......................................................................................................................................... 13-23
13.5 Image Formation System .........................................................................................................................................13-24
13.5.1 Outline of the Charging Wire ................................................................................................................................................ 13-24
13.5.2 Routing the Charging Wire .................................................................................................................................................... 13-24
13.5.3 Routing the Grid for the Primary Charging Assembly .......................................................................................................... 13-24
13.5.4 Adjusting the Height of the Charging Wire ........................................................................................................................... 13-25
13.5.5 Mounting the Cleaning Blade ................................................................................................................................................ 13-25
13.5.6 Mounting the Side Seal .......................................................................................................................................................... 13-26
13.6 Fixing System ..........................................................................................................................................................13-27
13.6.1 Applying Grease After Replacing the Fixing Roller ............................................................................................................. 13-27
13.6.2 Adjusting the Nip Width ........................................................................................................................................................ 13-27
13.6.3 Adjusting the Position of the Fixing Web Solenoid (SL9) .................................................................................................... 13-27
13.6.4 After Replacing the Fixing Web ............................................................................................................................................ 13-27
13.6.5 Adjusting the Position of he Fixing Inlet Guide Solenoid (SL1)........................................................................................... 13-27
13.6.6 Adjusting the Position of the Fixing Inlet Guide ................................................................................................................... 13-27
13.7 Electrical Components .............................................................................................................................................13-29
13.7.1 When Replacing the DC Controller PCB .............................................................................................................................. 13-29
13.7.2 When Replacing the HVT PCB ............................................................................................................................................. 13-29
13.7.3 After Replacing the HDD ...................................................................................................................................................... 13-29
13.7.4 When Replacing the Main Controller PCB ........................................................................................................................... 13-29
13.8 Pickup/Feeding System............................................................................................................................................13-30
13.8.1 Orientation of the Deck/Cassette Pickup Roller .................................................................................................................... 13-30
13.8.2 Orientation of the Separation Roller ...................................................................................................................................... 13-30
13.8.3 Orientation of the Feeding Roller of the Deck/Cassette Pickup Assembly ........................................................................... 13-30
13.8.4 Adjusting the Pressure of the Separation Roller of the Deck/Cassette .................................................................................. 13-30
Contents