Adf_Reversal Adf - Canon imageRUNNER ADVANCE 4551i Service Manual

[4]
■ Power Supply Assembly
An overview of the power supply is indicated below.
With this equipment, 4 types of power (24 V, 12 V, 6 V, and 5 V) are received from the Reader Unit.
The 24 V power is mainly used for the motor, solenoid, fan.
The 12 V power is mainly used for the LED Lamp Unit.
The 5 V power is mostly used for the sensors.
3.3 V power is generated via a converter on the ADF Driver PCB and supplied to the Original Width Volume.
Related Error Code
Power supply (24 V) error
• E227-0101: 24 V port is OFF when the power of the DF Unit is turned ON

ADF_Reversal ADF

■ Basic Operation
● Outline
The ADF has the following operation modes.
Operation mode name
Forward pickup/Delivery Picks up, reads, and then delivers a document.
Forward feed/Reverse Picks up, reads, reverses, and delivers a document.
delivery
[8]
[7]
[6]
[5]
[3]
[2]
24V
DADF driver
Reader
controller
PCB
5V
24V
6V Scanner Unit
4.5V
Outline of operation
[1]
24V
Motor
24V
Solenoid
24V
Fan
PCB
5V
Sensor
3.3V Original
width volume
24V LED
PCB lamp unit
Single-sided document -> Simplex printing
Single-sided document -> Duplex printing
Double-sided document -> Duplex printing
Double-sided document -> Simplex printing
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2. Technology
Associated print mode