Power Supply; Power Supply Block Diagram - Canon ImagePROGRAF iPF650 Series Service Manual

Chapter 2

2.4.5 Power Supply

2.4.5.1 Power supply block diagram

iPF650 / iPF655
Operation panel
POWER ON
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 +26 V generation circuit for driving motors, fans, and sensors and a +21.5 V generator circuit for driving sensors, heads,
logic circuits, and others.
When the power is turned off, +26 V and +21.5 V are reduced to about 12 V and 9 V respectively (power save mode).
Power ON/OFF operation is controlled by the main controller PCB.
2-46
Main controller PCB

Power supply

DC power supply
control circuit
generation circuit
+5V/+3.3V
generation circuit
generation circuit
F-2-37
AC inlet
100V to 240V
+26V
Noize filter circuit
Transformer
+21.5V
Rectifying circuit
0013-4333