Contents
7.4.1
Overview ..................................................................................................................................................................7- 5
7.4.2
Copier/Printer Potential Control ...............................................................................................................................7- 5
7.4.3
Determining the Primary Current .............................................................................................................................7- 7
7.4.4
Determining the Laser Output..................................................................................................................................7- 8
7.4.5
Determining the Developing Bias.............................................................................................................................7- 8
7.4.6
APC Correction ........................................................................................................................................................7- 9
7.4.7
Adjusting the Density in Various Modes ................................................................................................................7- 10
7.5
Charging Mechanism ............................................................................................................................... 7- 11
7.5.1
Controlling Pre-Exposure LED...............................................................................................................................7- 11
7.5.1.1
Pre-Exposure LED Control .................................................................................................................................................... 7- 11
7.5.2
Primary Charging Mechanism................................................................................................................................7- 11
7.5.2.1
Overview ................................................................................................................................................................................ 7- 11
7.5.2.2
Primary Charging Assembly Cleaning Mechanism................................................................................................................ 7- 11
7.5.2.3
Others .................................................................................................................................................................................... 7- 12
7.5.3
Dust-Collecting Roller Bias ....................................................................................................................................7- 12
7.5.3.1
Overview ................................................................................................................................................................................ 7- 12
7.5.4
Pre-Transfer Charging Mechanism........................................................................................................................7- 13
7.5.4.1
Outline.................................................................................................................................................................................... 7- 13
7.5.4.2
Controlling the Output to Suit the Environment (fuzzy control) .............................................................................................. 7- 13
7.5.4.3
Pre-Transfer Charging Assembly Cleaning Mechanism ........................................................................................................ 7- 14
7.5.4.4
Others .................................................................................................................................................................................... 7- 14
7.6
Drum Cleaner Unit.................................................................................................................................... 7- 16
7.6.1
Outline....................................................................................................................................................................7- 16
7.6.2
Detecting the State (full) of the Waste Toner Case ...............................................................................................7- 16
7.7
Developing Assembly............................................................................................................................... 7- 18
7.7.1
Controlling the Developing Assembly Drive...........................................................................................................7- 18
7.7.2
Controlling the Developing Bias.............................................................................................................................7- 18
7.7.3
Detecting the Toner Level and Controlling Toner Supply ......................................................................................7- 19
7.8
Transfer Mechanism................................................................................................................................. 7- 21
7.8.1
Transfer Charging Mechanism...............................................................................................................................7- 21
7.8.1.1
Outline.................................................................................................................................................................................... 7- 21
7.8.1.2
Controlling the Output to Suit the Environment (fuzzy control) .............................................................................................. 7- 21
7.8.1.3
Transfer Charging Assembly Cleaning Mechanism............................................................................................................... 7- 21
7.8.1.4
Others .................................................................................................................................................................................... 7- 22
7.9
Separation Mechanism............................................................................................................................. 7- 23
7.9.1
Separation Charging Mechanism...........................................................................................................................7- 23
7.9.1.1
Outline.................................................................................................................................................................................... 7- 23
7.9.1.2
Correcting the Output to Suit the Environment and the Drum Surface Potential ................................................................... 7- 23
7.9.1.3
Others .................................................................................................................................................................................... 7- 24
7.10
Parts Replacement Procedure ............................................................................................................... 7- 25
7.10.1
Process Unit.........................................................................................................................................................7- 25
7.10.1.1
Removing the Primary Fan Duct .......................................................................................................................................... 7- 25
7.10.1.2
Removing the Developing Assembly ................................................................................................................................... 7- 25
7.10.1.3
Removing the Process Unit ................................................................................................................................................. 7- 25
7.10.1.4
Mounting the Process Unit ................................................................................................................................................... 7- 26
7.10.2
Pre-Exposure Lamp .............................................................................................................................................7- 27
7.10.2.1
Removing the Primary Fan Duct .......................................................................................................................................... 7- 27
7.10.2.2
Removing the Developing Assembly ................................................................................................................................... 7- 27
7.10.2.3
Removing the Process Unit ................................................................................................................................................. 7- 28
7.10.2.4
Removing the Primary Charging Assembly ......................................................................................................................... 7- 29
7.10.2.5
Removing the Potential Sensor Assembly ........................................................................................................................... 7- 29
7.10.2.6
Removing the Pre-Exposure Lamp Unit............................................................................................................................... 7- 29
7.10.2.7
Cleaning the Primary Anti-Stray Sheet ................................................................................................................................ 7- 30
7.10.3
Primary Charging Assembly.................................................................................................................................7- 30
7.10.3.1
Removing the Primary Fan Duct .......................................................................................................................................... 7- 30
7.10.3.2
Removing the Primary Charging Assembly ......................................................................................................................... 7- 30
7.10.4
Pre-Transfer Charging Assembly.........................................................................................................................7- 31
7.10.4.1
Removing the Primary Fan Duct .......................................................................................................................................... 7- 31
Содержание iR5570 Series
Страница 1: ...Mar 29 2005 Service Manual iR6570 5570 Series ...
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Страница 26: ...Contents ...
Страница 27: ...Chapter 1 Introduction ...
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Страница 55: ...Chapter 2 Installation ...
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Страница 58: ...Contents 2 9 3 Mounting the Cassette Heater 2 34 ...
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Страница 99: ...Chapter 3 Basic Operation ...
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Страница 111: ...Chapter 4 Main Controller ...
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Страница 135: ...Chapter 5 Original Exposure System ...
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Страница 181: ...Chapter 6 Laser Exposure ...
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Страница 193: ...Chapter 7 Image Formation ...
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Страница 259: ...Chapter 8 Pickup Feeding System ...
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Страница 299: ...Chapter 8 8 35 F 8 51 PS36 M19 M14 Reversing flapper Outside delivery roller Point of reversal PS37 ...
Страница 349: ...Chapter 8 8 85 F 8 290 1 Feeding roller 2 Separation roller 3 Pressure lever 4 Pressure spring 1 2 A B 3 4 ...
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Страница 351: ...Chapter 9 Fixing System ...
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Страница 449: ...Chapter 11 MEAP ...
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Страница 455: ...Chapter 12 Maintenance and Inspection ...
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Страница 469: ...Chapter 13 Standards and Adjustments ...
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Страница 505: ...Chapter 14 Correcting Faulty Images ...
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Страница 537: ...Chapter 15 Self Diagnosis ...
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Страница 565: ...Chapter 16 Service Mode ...
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Страница 633: ...Chapter 17 Upgrading ...
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Страница 641: ...Chapter 17 17 5 F 17 4 HDD Boot ROM Flash ROM System Software ...
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Страница 677: ...Chapter 18 Service Tools ...
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Страница 679: ...Contents Contents 18 1 Service Tools 18 1 18 1 1 List of Special Tools 18 1 18 1 2 List of Solvents Oils 18 2 ...
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