Construction Of The Control System; Reader Controller Pcb - Canon iR C6800 Series Service Manual

Chapter 5

5.1.3 Construction of the Control System

The following shows the construction of the control system of the original exposure system:
Interface
PCB
Reader
cocling FAN
ADF
open/closed
sensor 1

5.1.4 Reader Controller PCB

The following shows the functional construction of the reader controller PCB:
Image processing
(shading correction)
DC24V
DC13V
DC5V
DC3.3V
Backs up service
mode settings
(EEPROM)
5-4
Scanner motor
drive control
To printer
(main controller)
Scanner
HP sensor
ADF
Original scanning lamp
open/closed
sensor 2
Scanner motor
Printer
unit
J201
J203
IC2
IC4
J206 J205
Original
Inverter
size sensor
PCB
(AB-configuration)
(dotted line): back
Scanner motor
To ADF
Reader controller
Inverter PCB
F-5-4
Stores firmware
(flash ROM)
DF
J202
IC1
(CPU)
J207 J208
Original
size sensor
(inch-configuration)
CCD unit
F-5-5
PCB
CCD unit
Original scanning lamp
activation control
Not used
IC3
J209
J210
J204
Not used
0002-5128
0002-5129