Contents12.3.1 Scheduled Servicing Basic Procedure .................................................................................................................12- 412.3.2 Periodical Servicing Chart Reader Unit................................................................................................................12- 412.3.3 Periodical Servicing Chart Printer Unit.................................................................................................................12- 512.3.4 Points to Note for Periodical Servicing.................................................................................................................12- 612.4 Cleaning ................................................................................................................................................. 12- 712.4.1 Cleaning the Primary Anti-Stray Sheet ................................................................................................................12- 712.4.2 Cleaning the Developing Anti-Stray Sheet...........................................................................................................12- 712.4.3 Cleaning the Cleaner Side Scraper......................................................................................................................12- 712.4.4 Cleaning the Photosensitive Drum.......................................................................................................................12- 8Chapter 13 Standards and Adjustments13.1 Image Adjustment Basic Procedure ....................................................................................................... 13- 113.1.1 Making Pre-Checks..............................................................................................................................................13- 113.1.2 Making Checks on the Printer Unit (1/2) ..............................................................................................................13- 113.1.3 Making Checks on the Printer Unit (2/2) ..............................................................................................................13- 313.1.4 Making Checks on the Reader Unit .....................................................................................................................13- 513.1.5 Checking the Potential System ............................................................................................................................13- 813.1.6 Checking the Surface Potential Control System ................................................................................................13- 1113.1.7 Potential Control System Conversion Table ......................................................................................................13- 1413.1.8 Emergency Measures for a Fault in the Potential Sensor..................................................................................13- 1713.2 Image Adjustments ............................................................................................................................... 13- 1813.2.1 Standards of Image Position ..............................................................................................................................13- 1813.2.2 Checking the Image Position .............................................................................................................................13- 1813.2.3 Adjusting Side Registration ................................................................................................................................13- 1813.2.4 Adjusting the Image Leading Edge Margin ........................................................................................................13- 1913.2.5 Adjusting the Left/Right Non-Image Width .........................................................................................................13- 2013.2.6 Adjusting the Leading Edge Non-Image Width ..................................................................................................13- 2013.3 Scanning System.................................................................................................................................. 13- 2113.3.1 After Replacing the Reader Controller PCB.......................................................................................................13- 2113.3.2 When Replacing the CCD Unit...........................................................................................................................13- 2113.3.3 Adjusting the Position of the No. 1/No. 2 Mirror Base........................................................................................13- 2113.3.4 When Replacing the Platen Board Glass...........................................................................................................13- 2213.3.5 When Replacing the Reading Glass ..................................................................................................................13- 2213.3.6 When Replacing the Scanning Lamp.................................................................................................................13- 2213.3.7 When Replacing the Inverter PCB .....................................................................................................................13- 2213.4 Laser Exposure System ....................................................................................................................... 13- 2313.4.1 When Replacing the Scanner Unit .....................................................................................................................13- 2313.5 Image Formation System ..................................................................................................................... 13- 2413.5.1 Outline of the Charging Wire..............................................................................................................................13- 2413.5.2 Routing the Charging Wire.................................................................................................................................13- 2413.5.3 Routing the Grid for the Primary Charging Assembly ........................................................................................13- 2413.5.4 Adjusting the Height of the Charging Wire .........................................................................................................13- 2513.5.5 Mounting the Cleaning Blade .............................................................................................................................13- 2513.5.6 Mounting the Side Seal ......................................................................................................................................13- 2613.6 Fixing System ....................................................................................................................................... 13- 2713.6.1 Applying Grease After Replacing the Fixing Roller ............................................................................................13- 2713.6.2 Adjusting the Nip Width......................................................................................................................................13- 2713.6.3 Adjusting the Position of the Fixing Web Solenoid (SL9)...................................................................................13- 2713.6.4 After Replacing the Fixing Web..........................................................................................................................13- 2713.6.5 Adjusting the Position of he Fixing Inlet Guide Solenoid (SL1)..........................................................................13- 2713.6.6 Adjusting the Position of the Fixing Inlet Guide..................................................................................................13- 2713.7 Electrical Components.......................................................................................................................... 13- 2913.7.1 When Replacing the DC Controller PCB............................................................................................................13- 2913.7.2 When Replacing the HVT PCB ..........................................................................................................................13- 29