Canon PC921 - PCBs (Printed Circuit Boards)

CHAPTER 3 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
3-4
D. PCBs
Figure 3-4
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[1]
[3]
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[5]
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[9]
Description
Removes noise from the power supply.
Controls sequence of operations.
Supplies DC power, generates high voltage, and
controls the scanning lamp.
Makes an electrical connection between the machine
top and bottom.
Provides copying insurrections/indications.
Detects paper in front of the registration roller.
Detects the density of originals.
Used for blanking exposure.
Used for blanking exposure.
Ref.
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
Name
Noise filter PCB
DC controller PCB
Composite power supply PCB
High-voltage contact PCB
Control panel PCB
Sensor PCB
AE sensor PCB
Blanking PCB (front)
Blanking PCB (rear)