Power Supply; Power Supply Block Diagram - Canon W6200 Service Manual

Part 4: Technical Reference

4.6 Power Supply

4.6.1 Power supply block diagram

Carriage motor driving power: +26.5 V
Operation panel
STANDBY
START
The universal power supply converts AC voltages ranging from 100 V to 240 V
supplied from the AC inlet to DC voltages for supplying the driving voltages of ICs,
motors, and other parts.
The voltage generating circuits are divided into the power supply system for driving
the motors (+26.5 V) and sensors (+5.1 V) and the power supply system for driving the
logic circuits (+3.3 V).
The +26.5 V/+5.1 V system uses a combination of START signals sent regularly from
the power supply and power button signals to control the STANDBY signals and turn
the power on and off.
During power save mode, the STANDBY signals are controlled to turn off the +26.5
V/+5.1 V output. Also, only the carriage motor driving +26. 5 V power is turned off
when the upper cover is opened.
+26.5V
System controller Engine controller
DC power
supply
control circuit
+5.1V
+3.3V
Figure 4-32 Power Supply Block Diagram
Power supply
Inverter
+26.5 V
transformer
generation
circuit
DC power
supply
control circuit
+5.1 V/+3.3V
generation
circuit
4-50
W6200
AC inlet
100 V to 240 V
Noise filter circuit
Active filter circuit