
Contents
8.7.2.1 Outline .......................................................................................................................................................................................................... 8-32
8.7.2.2 Controlling the Output to Suit the Environment (fuzzy control).................................................................................................................. 8-32
8.7.2.3 Correcting the Output at the Trailing Edge of Paper .................................................................................................................................... 8-33
8.7.2.4 Transfer Charging Assembly Cleaning Mechanism ..................................................................................................................................... 8-34
8.7.2.5 Others............................................................................................................................................................................................................ 8-35
8.8 Separation Mechanism ................................................................................................................................................ 8-36
8.8.1 Separation Charging Mechanism............................................................................................................................................... 8-36
8.8.1.1 Outline .......................................................................................................................................................................................................... 8-36
8.8.1.2 Correcting the Output to Suit the Environment and the Toner Deposit ....................................................................................................... 8-36
8.8.1.3 Correcting the Output upon Detection of Leakage ....................................................................................................................................... 8-37
8.8.1.4 Others............................................................................................................................................................................................................ 8-38
8.9 Parts Replacement Procedure...................................................................................................................................... 8-39
8.9.1 Process Unit ............................................................................................................................................................................... 8-39
8.9.1.1 Removing the Process Unit........................................................................................................................................................................... 8-39
8.9.1.2 Removing the Process Unit........................................................................................................................................................................... 8-39
8.9.1.3 Mounting the Process Unit ........................................................................................................................................................................... 8-40
8.9.1.4 Mounting the Process Unit ........................................................................................................................................................................... 8-41
8.9.2 Pre-Exposure Lamp ................................................................................................................................................................... 8-41
8.9.2.1 Removing the Pre-Exposure Lamp Unit....................................................................................................................................................... 8-41
8.9.3 Primary Charging Assembly...................................................................................................................................................... 8-41
8.9.3.1 Removing the Primary Charging Assembly ................................................................................................................................................. 8-41
8.9.4 Pre-Transfer Charging Assembly .............................................................................................................................................. 8-42
8.9.4.1 Removing the Pre-Transfer Charging Assembly.......................................................................................................................................... 8-42
8.9.5 Photosensitive Drum.................................................................................................................................................................. 8-42
8.9.5.1 Points to Note When Handling the Photosensitive Drum............................................................................................................................. 8-42
8.9.5.2 Points to Note When Handling the Photosensitive Drum............................................................................................................................. 8-42
8.9.5.3 Removing the Photosensitive Drum ............................................................................................................................................................. 8-42
8.9.5.4 Removing the Photosensitive Drum ............................................................................................................................................................. 8-43
8.9.6 Drum Cleaner Unit..................................................................................................................................................................... 8-44
8.9.6.1 Construction.................................................................................................................................................................................................. 8-44
8.9.6.2 Construction.................................................................................................................................................................................................. 8-44
8.9.6.3 Removing the Cleaning Blade ...................................................................................................................................................................... 8-44
8.9.6.4 Removing the Cleaning Blade ...................................................................................................................................................................... 8-45
8.9.6.5 Mounting the Cleaning Blade ....................................................................................................................................................................... 8-45
8.9.6.6 Mounting the Cleaning Blade ....................................................................................................................................................................... 8-46
8.9.6.7 Removing the Blade Vibrating Unit ............................................................................................................................................................. 8-46
8.9.7 Photosensitive Drum Heater ...................................................................................................................................................... 8-46
8.9.7.1 Replacing the Photosensitive Drum Heater .................................................................................................................................................. 8-46
8.9.8 Developing Assembly................................................................................................................................................................ 8-47
8.9.8.1 Removing the Developing Assembly ........................................................................................................................................................... 8-47
8.9.8.2 Removing the Hopper................................................................................................................................................................................... 8-47
8.9.9 Developing Cylinder.................................................................................................................................................................. 8-47
8.9.9.1 Removing the Developing Cylinder ............................................................................................................................................................. 8-47
8.9.10 Developing Blade..................................................................................................................................................................... 8-49
8.9.10.1 Removing the Blade Unit ........................................................................................................................................................................... 8-49
8.9.10.2 Mounting the Blade .................................................................................................................................................................................... 8-49
8.9.11 Developing Cylinder Deceleration Clutch............................................................................................................................... 8-49
8.9.11.1 Remove the Developing Cylinder Deceleration Clutch ............................................................................................................................. 8-49
8.9.11.2 Remove the Developing Cylinder Deceleration Clutch ............................................................................................................................. 8-50
8.9.12 Developing Cylinder Clutch .................................................................................................................................................... 8-50
8.9.12.1 Remove the Developing Cylinder Clutch................................................................................................................................................... 8-50
8.9.12.2 Remove the Developing Cylinder Clutch................................................................................................................................................... 8-51
8.9.13 Transfer/Separation Charging Assembly................................................................................................................................. 8-51
8.9.13.1 Removing the Transfer/Separation Charging Assembly ............................................................................................................................ 8-51
8.9.14 Pre-Transfer Exposure LED .................................................................................................................................................... 8-52
8.9.14.1 Removing the Pre-Transfer Exposure LED................................................................................................................................................ 8-52
8.9.14.2 Removing the Pre-Transfer Exposure LED................................................................................................................................................ 8-52
8.9.15 Separation Claw/Separation Claw Drive Assembly ................................................................................................................ 8-53
8.9.15.1 Separation Claw/Separation Claw Drive Assembly ................................................................................................................................... 8-53
8.9.16 Potential Sensor ....................................................................................................................................................................... 8-53
Summary of Contents for ImageRunner iR8500 Series
Page 1: ...Apr 5 2005 Service Manual iR8500 Series ...
Page 2: ......
Page 6: ......
Page 32: ...Contents ...
Page 33: ...Chapter 1 Introduction ...
Page 34: ......
Page 98: ......
Page 99: ...Chapter 2 Installation ...
Page 100: ......
Page 180: ...Chapter 2 2 78 F 2 272 2 1 1 3 ...
Page 181: ...Chapter 3 Basic Operation ...
Page 182: ......
Page 184: ......
Page 207: ...Chapter 4 Main Controller ...
Page 208: ......
Page 245: ...Chapter 4 4 35 F 4 72 1 2 ...
Page 246: ......
Page 247: ...Chapter 5 Original Exposure System ...
Page 248: ......
Page 252: ......
Page 306: ......
Page 307: ...Chapter 6 Image Processing System ...
Page 308: ......
Page 310: ......
Page 319: ...Chapter 7 Laser Exposure ...
Page 320: ......
Page 322: ......
Page 335: ...Chapter 8 Image Formation ...
Page 336: ......
Page 340: ......
Page 399: ...Chapter 9 Pickup Feeding System ...
Page 400: ......
Page 404: ......
Page 482: ......
Page 483: ...Chapter 10 Fixing System ...
Page 484: ......
Page 524: ......
Page 525: ...Chapter 11 External and Controls ...
Page 526: ......
Page 530: ......
Page 583: ...Chapter 12 MEAP ...
Page 584: ......
Page 586: ......
Page 589: ...Chapter 13 Maintenance and Inspection ...
Page 590: ......
Page 592: ......
Page 610: ...Chapter 13 13 18 F 13 17 1 2 3 ...
Page 648: ......
Page 649: ...Chapter 14 Standards and Adjustments ...
Page 650: ......
Page 654: ......
Page 723: ...Chapter 15 Correcting Faulty Images ...
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Page 793: ...Chapter 16 Self Diagnosis ...
Page 794: ......
Page 796: ......
Page 841: ...Chapter 17 Service Mode ...
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Page 1076: ......
Page 1077: ...Chapter 18 Upgrading ...
Page 1078: ......
Page 1080: ......
Page 1108: ...Chapter 18 18 28 F 18 45 3 Click Start F 18 46 4 Click Save F 18 47 5 Click OK ...
Page 1111: ...Chapter 19 Service Tools ...
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Page 1121: ...Apr 5 2005 ...
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