Canon iPF700, Руководство по обслуживанию

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Chapter 2
2-31
controller through the carriage relay PCB.
c) Multi sensor control IC (IC204, IC205)
These IC's generates the LED control signals and makes gain adjustment for the multi sensor.
2.4.5 Maintenance Cartridge Relay PCB
2.4.5.1 Maintenance cartridge relay PCB components
0013-6972
F-2-25
a) EEPROM (IC1)
The 128-KB EEPROM stores all information written in the EEPROM on the main controller PCB.
2.4.6 Power Supply
2.4.6.1 Power supply block diagram
0013-6974
F-2-26
The power supply converts AC voltages ranging from 100 V to 240 V from the AC inlet to DC voltages for
driving the ICs, motor, and others.
The voltage generator circuits include the +32 V generation circuit for driving motors, fans, and the +5.1V
generator circuit for driving sensors, logic circuits.
When in the power saving mode, the power supply cut outs the +32 V and the +5.1 V.
Power ON/OFF operation is controlled by the main controller PCB. When the upper cover is open, the power
supply cut outs only the +32V power to the carriage.
IC 1
Operation panel
Transformer
DC power supply
control circuit
+5.1V
generation circuit
+32V
generation circuit
POWER ON
Rectifying circuit
Noize filter circuit
AC inlet
100V to 240V
Power supply Main controller PCB
+5V/+3.3V
generation circuit