Canon iR1020 Series, Service Manual

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Chapter 6
6-2
6.1.2 Outline
0013-1102
iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F / iR1024i / iR1024iF
The following is below the construction of the image formation system.
The main of image formation components consist of the drum unit (a photosensitive drum, a primary charging roller, a cleaner blade) and the developing unit (a
developing cylinder).
The DC controller PCB has a built-in high-voltage output assembly, and generates high voltage for charging at such times as necessary.
This machine is provided with a humidity sensor to attain charging suitable for the environment.
The DC controller PCB monitors the humidity sensor status during standby to output the appropriate charging AC voltage.
Waste toner is collected by the cleaning blade inside the drum, and is kept in the waste toner assembly.
The waste toner inside the waste toner assembly is constantly stirred by the stirring rod.
If the waste toner box becomes full, the waste toner full detection sensor (SR6) goes ON.
The waste toner full detection sensor (SR6) notifies the DC controller PCB of the waste toner full.
F-6-1
MEMO:
1.The toner bottle of this machine can be used to copy the A4 standard original (ISO/IEC 19752 conformity) on about 8,400 sheets.
2.The number of prints that may be made after the first indication of the message "TONER LOW PREPARE NEW TONER" is about 430 sheets (when copying an
A4 standard original (ISO/IEC 19752 conformity)).
3.The capacity of a waste toner box is about 275g. The waste toner full detection operates with about 220g.
DC controller PCB
Primary charging roller
Cleaning blade
Static
eliminator
Developing cylinder
Transfer charging
roller
Developing unit
Wate toner full sensor
FT608
FT602
J505
J501
J114
Drum unit
SR6
J109
High-voltage
output block
Humidity sensor
Drum