Canon iR2800i Service Manual - Page 10
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Print PageCONTENTS
2.2.2
AC Bias ............................. 4-5P
2.3 Controlling the Current Voltage/
Current to a Specific Level ....... 4-5P
2.3.1
Controlling the DC Bias to
a Specific Level .................. 4-5P
2.3.2
Controlling the AC Bias to
a Specific Current Level ..... 4-5P
2.4 Temperature Correction of
the DC Bias .............................. 4-6P
2.5 Humidity Correction of
the AC Bias .............................. 4-6P
2.6 Controlling the Detection of the
Photosensitive Drum Resistance
(APVC control) ........................ 4-7P
3
Controlling the Transfer Charging
Roller Bias ...................................... 4-9P
3.1 Outline ...................................... 4-9P
3.2 Turning On/Off the Bias ......... 4-10P
3.3 Controlling the Detection of the
Transfer Charging Roller
Resistance (ATVC control) .... 4-10P
3.4 Controlling the Output by
Operating Mode ..................... 4-11P
3.4.1
Types of Modes ............... 4-11P
3.4.2
Turning On/Off the
Cleaning Bias ................... 4-12P
3.5 Controlling the Output ............ 4-13P
4
Controlling the Separation Static
Eliminator Bias ............................. 4-14P
4.1 Outline .................................... 4-14P
4.2 Turning On/Off the Bias ......... 4-15P
4.3 Controlling the Bias to a
Specific Voltage Level ............. 4-15P
4.4 Controlling the Output by
Paper Type and Environment
Sensor (humidity) ................... 4-15P
5
Controlling the Transfer Guide
Bias ............................................... 4-16P
5.1 Transfer Guide Bias ............... 4-16P
6
Primary Charging Roller Cleaning
Mechanism ................................... 4-17P
6.1 Outline ................................... 4-17P
7
Developing Assembly .................. 4-18P
7.1 Outline .................................... 4-18P
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COPYRIGHT © 2002 CANON INC.
7.2 Controlling the Developing
Bias ........................................ 4-19P
7.2.1
Outline ............................. 4-19P
7.2.2
Controlling the DC
Developing Bias ............... 4-20P
7.2.3
Controlling the AC
Developing Bias ............... 4-20P
7.2.4
Controlling the Level of
the DC Developing Bias .. 4-20P
7.3 Detecting the Level of
Toner ...................................... 4-21P
8
Drum Cleaner ............................... 4-22P
8.1 Outline .................................... 4-22P
8.2 Monitoring the Waste Toner
Case ........................................ 4-24P
8.3 Locking of the Waste Toner
Feedscrew .............................. 4-25P
9
Disassembly and Assembly .......... 4-26P
9.1 Pre-Exposure Lamp Unit ....... 4-27P
9.1.1
Removing the Pre-Exposure
Lamp Unit ........................ 4-27P
9.2 Photosensitive Drum .............. 4-28P
9.2.1
Removing the Drum Unit 4-28P
9.2.2
Cleaning the
Photosensitive Drum ........ 4-29P
9.3 Transfer Charging Roller ........ 4-30P
9.3.1
Removing the Transfer
Charging Roller ................ 4-30P
9.4 Charging Roller Solenoid ....... 4-31P
9.4.1
Removing the Charging
Roller Solenoid (SL6) ...... 4-31P
9.5 Developing Assembly ............ 4-33P
9.5.1
Removing the Developing
Assembly ........................ 4-33P
9.5.2
Removing the Grip
Assembly ......................... 4-34P
9.5.3
Removing the Toner
Sensor .............................. 4-34P
9.5.4
Removing the Developing
Assembly Upper Cover ... 4-34P
9.5.5
Removing the Blade
Base Unit ......................... 4-35P
9.5.6
Removing the Developing
Cylinder ........................... 4-35P
CANON iR2200/iR2800/iR3300 REV.1 JAN. 2002