Fan; Power Unit - Canon Color Image Reader - L1 Service Manual

2
Technology

Fan

This equipment is equipped with 2 fans.
Code Fan
FM1 Scanner unit exhaust fan To exhaust heat from the scanner unit.
FM2 Scanner unit cooling fan To cool down the scanner unit.
Scanner unit
exhaust fan (FM1)
Scanner unit
cooling fan (FM2)
2
Technology
Function

Power unit

Following is the overview of power supply
24V and 12V power supply for reader controller PCB is generated by the printer unit.
24V is mainly used at the motors, fans and LED lump unit. Also it is supplied to the DADF
driver PCB and DADF scanner unit.
5V is mainly used at the sensors.
24V
24V
5V
24V
24V
Reader
6V
Host
controller
machine
4.5V
PCB
12V
24V
6V
4.5V
24V
5V
Error Code
E227 (Error in power supply (24V))
-0001 When the power supply is charged 24V port is off.
-0002 When the job starts, 24V port is off.
-0003 When the job is completed, the 24V port is off.
-0004 When the trigger is burdened, 24 V port is off.
-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.
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Motor
Fan
Sensor
LED lamp
CMOS PCB 24V
(reader) unit
CMOS PCB 24V LED lamp
unit
(DADF)
DADF driver PCB
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