Canon DR-9080C Service Manual page 28

CHAPTER 2 FUNCTIONS & OPERATION
4. Electrical Circuits
This machine uses three electrical circuits
consisting of a main CPU PCB, a pick-up control
PCB, and a document tray control PCB. A block
diagram of these three circuits is shown in Fig.
2-104.
Upper unit
door sensor
Left-end
PS5
sensor
Left-end
PCB
PS6
sensor
Right-end
Right-end
sensor
PS10
sensor
PCB
Power switch
Staple LED
PCB
2 - 4
Front
Mechanical
registration
counter
L sensor
CNT1
Feed Pick-up
motor motor
M3 M2
Imprinter PCB
Option
Endorser
Option
SW 1
DC power
supply
PCB
Staple
photo-sensor
VR1
PS4
Document
guide
Document
width
sensor
sensor
COPYRIGHT © 2003 CANON ELECTRONICS INC.
The pick-up control PCB controls pick-up of
the document based on signals from the main
CPU PCB.
assembly controls the document tray based on
signals from the main CPU PCB assembly and the
pick-up control PCB.
Front
registration
R sensor
PS7 PS9
Imprinter
door
Pick-up
sensor
sensor
Front
registration
PS2 PS3
sensor PCB
Pick-up control PCB (0SUB)
Main CPU PCB
(MAINDCON)
Document tray control PCB (10SUB)
PS1
CL1
Document
Registration
tray HP
clutch
sensor
Fig. 2-104
The document tray control PCB
Back registration
sensor
PS
Shading
solenoid
(Upper side)
Back
registration
SL2
sensor PCB
Pick-up
solenoid
Ultrasonic
sensor USS1
PCB
Ultrasonic
drive USS2
PCB
Front reading unit
Back reading unit
Operation panel PCB
Ehaust fan
FM1
M1
Main motor
Shading solenoid
(Lower side)
M6 M5
Document Retard
tray motor
motor
CANON DR-6080/9080C REV.0 SEPT. 2003
SL1
Ultrasonic
(receiving)
sensor
Ultrasonic
(transmitting)
sensor
SL3