Canon Duplex Color B1, Service Manual

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Reader - Technology > Basic Configuration > Parts Configuration > Scanner Unit
Reader - Technology > Basic Configuration > Parts Configuration > Scanner Unit
Basic Configuration
Parts Configuration
Major Electrical Parts
Original size sensor 2
(CF2)
Original size sensor 1
(CF1)
Scanner unit
cooling fan (FM2)
Scanner unit
DADF
open/closed
sensor 1
(SR1)
Scanner unit
home position sensor
(SR2)
Scanner unit
exhaust fan (FM1)
Reader controller PCB
(PCB1)
Scanner motor (M1)
DADF
open/closed
sensor 2
(SR3)
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Component part Symbol
Function/specification
Scanner motor M1
2 phase pulse motor: pulse control
Scanner unit exhaust fan FM1 Exhaustion of scanner unit
Scanner unit cooling fan FM2 Cooling of scanner unit
DADF open/closed sensor 1 SR1 DADF open detection (DADF is detected at 5 degree)
Scanner unit HP sensor SR2 Scanner unit HP detection
DADF open/closed sensor 2 SR3
DADF open detection (size detection timing is detected
when DADF is open at 25 degree)
Original size sensor 1
CF1
Size detection in vertical direction (AB type)
Original size sensor 2
CF2
Size detection in vertical direction (INCH type)
Scanner unit ---
Image reading, analog image processing
Reader controller PCB PCB1
Control of entire reader, digital image processing
Scanner Unit
Original exposure and scanning are performed by the integrated scanner unit of LED,
turndown mirror, free curved mirror, and Reading sensor.
Light emitted from LED is reflected by the original and reaches the Reading sensor through
the 3 folding mirrors and 4 free curvature mirrors.
Red (R) line
Greeen (G) line
Blue (B) line
Black & white (B / W) line
Reading sensor
Free curved mirrors Turndown mirrors
Reading sensor
Free curved mirrors
Turndown mirrors
LED (light source)
Scanner unit PCB
LED lamp unit
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