Canon F1 Service Manual page 67

2
Technology > Controls > DADF > Power Supply Assembly
■ Fan
This equipment is equipped with 3 fans.
Code Fan
FM1 Motor driver cooling fan To cool down the motor IC on DADF driver PCB (PCB1).
FM2 Read motor cooling fan To cool down the read motor (M4).
FM3 Scanner unit cooling fan To cool down the scanner unit.
Motor driver cooling fan (FM1)
Read motor cooling fan (FM2)
Read motor (M4)
Scanner unit
Scanner unit cooling fan (FM3)
2 Technology > Controls > DADF > Power Supply Assembly
Function
T-2-28
DADF driver PCB (PCB1)
F-2-95
■ Power Supply Assembly
Power supply schematic diagram is shown below.
This equipment receives 5 systems (24.5, 24, 6, 5, 4.5 V) of power supply from the reader
unit.
24V is mainly used for the motor, the solenoid, the fan, and the LED lamp unit.
5V is mainly used for the sensor.
The converter in the DADF driver PCB (PCB1) generates 3.3V, and supplies to the original
width volume (VR).
24V
DADF driver
Reader
controller
PCB
5V
24V
6V Scanner unit
4.5V
Error Code
E227 (Error in power supply (24V))
-0101 When the power supply is charged in DADF 24V port is off.
-0102 When the job starts in DADF, 24V port is off.
-0103 When the job is completed in DADF, the 24V port is off.
24V
Motor
24V
Solenoid
24V
Fan
PCB
5V
Sensor
3.3V Original
width volume
LED
24V
lamp unit
PCB
F-2-96
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2-54