Canon iR6570 series Service Manual
Also see for iR5570 Series: INSTALLATION PROCEDUREGeneral Timing Chart/General Circuit DiagramService bulletinService bulletinService bulletin
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Contents
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Contents7.4.1 Overview ..................................................................................................................................................................7- 57.4.2 Copier/Printer Potential Control ...............................................................................................................................7- 57.4.3 Determining the Primary Current .............................................................................................................................7- 77.4.4 Determining the Laser Output..................................................................................................................................7- 87.4.5 Determining the Developing Bias.............................................................................................................................7- 87.4.6 APC Correction ........................................................................................................................................................7- 97.4.7 Adjusting the Density in Various Modes ................................................................................................................7- 107.5 Charging Mechanism ............................................................................................................................... 7- 117.5.1 Controlling Pre-Exposure LED...............................................................................................................................7- 117.5.1.1 Pre-Exposure LED Control .................................................................................................................................................... 7- 117.5.2 Primary Charging Mechanism................................................................................................................................7- 117.5.2.1 Overview ................................................................................................................................................................................ 7- 117.5.2.2 Primary Charging Assembly Cleaning Mechanism................................................................................................................ 7- 117.5.2.3 Others .................................................................................................................................................................................... 7- 127.5.3 Dust-Collecting Roller Bias ....................................................................................................................................7- 127.5.3.1 Overview ................................................................................................................................................................................ 7- 127.5.4 Pre-Transfer Charging Mechanism........................................................................................................................7- 137.5.4.1 Outline.................................................................................................................................................................................... 7- 137.5.4.2 Controlling the Output to Suit the Environment (fuzzy control) .............................................................................................. 7- 137.5.4.3 Pre-Transfer Charging Assembly Cleaning Mechanism ........................................................................................................ 7- 147.5.4.4 Others .................................................................................................................................................................................... 7- 147.6 Drum Cleaner Unit.................................................................................................................................... 7- 167.6.1 Outline....................................................................................................................................................................7- 167.6.2 Detecting the State (full) of the Waste Toner Case ...............................................................................................7- 167.7 Developing Assembly ............................................................................................................................... 7- 187.7.1 Controlling the Developing Assembly Drive...........................................................................................................7- 187.7.2 Controlling the Developing Bias.............................................................................................................................7- 187.7.3 Detecting the Toner Level and Controlling Toner Supply ......................................................................................7- 197.8 Transfer Mechanism................................................................................................................................. 7- 217.8.1 Transfer Charging Mechanism...............................................................................................................................7- 217.8.1.1 Outline.................................................................................................................................................................................... 7- 217.8.1.2 Controlling the Output to Suit the Environment (fuzzy control) .............................................................................................. 7- 217.8.1.3 Transfer Charging Assembly Cleaning Mechanism............................................................................................................... 7- 217.8.1.4 Others .................................................................................................................................................................................... 7- 227.9 Separation Mechanism............................................................................................................................. 7- 237.9.1 Separation Charging Mechanism...........................................................................................................................7- 237.9.1.1 Outline.................................................................................................................................................................................... 7- 237.9.1.2 Correcting the Output to Suit the Environment and the Drum Surface Potential ................................................................... 7- 237.9.1.3 Others .................................................................................................................................................................................... 7- 247.10 Parts Replacement Procedure ............................................................................................................... 7- 257.10.1 Process Unit.........................................................................................................................................................7- 257.10.1.1 Removing the Primary Fan Duct .......................................................................................................................................... 7- 257.10.1.2 Removing the Developing Assembly ................................................................................................................................... 7- 257.10.1.3 Removing the Process Unit ................................................................................................................................................. 7- 257.10.1.4 Mounting the Process Unit ................................................................................................................................................... 7- 267.10.2 Pre-Exposure Lamp .............................................................................................................................................7- 277.10.2.1 Removing the Primary Fan Duct .......................................................................................................................................... 7- 277.10.2.2 Removing the Developing Assembly ................................................................................................................................... 7- 277.10.2.3 Removing the Process Unit ................................................................................................................................................. 7- 287.10.2.4 Removing the Primary Charging Assembly ......................................................................................................................... 7- 297.10.2.5 Removing the Potential Sensor Assembly ........................................................................................................................... 7- 297.10.2.6 Removing the Pre-Exposure Lamp Unit............................................................................................................................... 7- 297.10.2.7 Cleaning the Primary Anti-Stray Sheet ................................................................................................................................ 7- 307.10.3 Primary Charging Assembly.................................................................................................................................7- 307.10.3.1 Removing the Primary Fan Duct .......................................................................................................................................... 7- 307.10.3.2 Removing the Primary Charging Assembly ......................................................................................................................... 7- 307.10.4 Pre-Transfer Charging Assembly.........................................................................................................................7- 317.10.4.1 Removing the Primary Fan Duct .......................................................................................................................................... 7- 31 |
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