Canon iR2200 Service Manual page 144

CONTENTS
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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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
2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001