Power Supply System - Canon iR4570 Series Service Manual

10.4 Power Supply System

10.4.1 Power Supply
10.4.1.1 Route of Power Inside the Printer Unit
iR2270 / iR2870 / iR3570 / iR4570
The machine's DC power is controlled by the printer unit power supply PCB.
The following shows the functions of the individual power supply PCBs used or accessories and the distribution of
power:
Printer unit power
supply PCB
Accessories power
supply PCB
Main switch
Door switch
Leakage breaker
Environment heater
switch PCB
High-voltage power
supply PCB
AC driver PCB
Controller power
supply PCB
Name
Generates DC power (24 V, 13 V); supplies
DC power to the controller power supply
PCB and cassette pedestal.
Supplies power to the side paper deck,
buffer path, and finisher.
Turns on/off the power to the AC driver
PCB.
Turns on/off 24 VU1 to the DC controller
PCB.
Cuts power in the event of an error.
Turns on/off power to the cassette heater,
printer unit heater, and deck heater.
Generate various high voltage.
Supplies AC power to the printer unit power
supply PCB, accessories power supply
PCB, Supplies AC power to all-night power
supply PCB; drives the fixing system.
Supplies DC power to the 3-way unit, fax
board, controller, HVT and DC controller
PCB; generates DC power (13V, 5V, 3.3V).
Generates DC power (5V,3.3V).
T-10-6
Description
Chapter 10
0008-0541
Remarks
Optional
10-9