Canon MF5940dw - Failure Detection; Low-Voltage Power Supply; Outline

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Technical Overview > Controller System > Low-voltage Power Supply > Outline
Technical Overview > Controller System > Low-voltage Power Supply > Outline
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Failure Detection
Failure Point Cause of Failure
Main Motor In the case that the speed of Motor does not reach the specied speed after the
specied time has passed since the startup of the Main Motor.
Main Fan In the case that the Fan has been locked continuously for the specied period of
time since the startup of the Main Fan Motor.
T-2-6
Low-voltage Power Supply
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Outline
The Low-voltage power supply converts AC Power from the power receptacle into DC Power
to cover the DC loads.
Block diagram of the Low Voltage Power Supply is shown below.
+5V
+3.3V
+3.3V
+24V
+24U
+24V_S
DOOR
SNS
Noise
filter
FET
+24P1
Fuse
(FU1002)
Fuse
(FU1001)
Door switch
(SW301)
+24V generation
circuit
DC controller
Low-voltage power supply
Engine controller
Fixing
control
circuit
Fixing unit
Main motor, etc.
Main controller
+5V
generation
circuit
+3.3V
generation
circuit
High-voltage
power supply
Noise filter
Protection
circuit
Fuse
(FU101)
FET
Power switch
(SW1,SW11)
F-2-11