CHAPTER 7 EXTERNALS AND CONTROLS

3 Power Supply

3.1 Power Supply

3.1.1 Outline

The machine’s power supply is controlled by the DC power supply PCB; the PCBs and associated components are shown in T07-301-01, and the distribution of power is shown in F07-301-01.

Name

Description

Main power supply PCB

• Generates DC power from AC power

 

• Protects against overcurrent

Composite power supply PCB

• Generates high voltage

Options PCB

• Supplies power to side paper deck, finisher

Switch PCB (SW1/SW2)

• Turns on/off main power supply PCB (SW1), Turns

 

on/off cassette heater, mirror heater, lens heater (SW2)

Door switch (SW3)

• Detects state of door (open/closed), Cuts AC power to

 

fixing heater, Cuts 24V power to main motor, fixing

 

motor, composite power supply PCB

Thermistor power supply PCB (200 V)

• Supplies power to thermsitor

Leakage breaker

• Cuts power in response to error

 

T07-301-01

COPYRIGHT © 2001 CANON INC.

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

7-5 P

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Canon IR2800, IR3300, IR2200 manual Power Supply, T07-301-01