Functional Block Diagram; Image Processor Pcb - Canon iR1200 Series Service Manual

Chapter 3

3.1.2 Functional Block Diagram

Memb-
LCD Speaker
rane
J4030 J4020
J403 J402
Control panel
PCB
Key detection
and LCD/LED
drive
LCD
function
Serial
communication
control
J401
J315
Drive control block
Control panel control block
Image processing control block
Communication control block
J317
J501
Analog
processor
PCB
J503
J504

3.1.3 Image Processor PCB

It controls the machine as a whole, and communicates directly with all PCBs except the sensor PCB and modular
jack PCB.
Drive Control Block
The drive control mechanism acts on the reader motor and the ADF motor by the work of the ASIC and motor drive
IC.
Control Panel Control Block
The control panel control block receives the state of control keys while sending/receiving data in serial
communication with the control IC of the control panel PCB. Also, it sends LED and LCD signals to the control panel
3-2
Modular
Jack
PCB *2
*2 PC
*4 *3
J907 /J911 /
*3
J912
Parallel I/F
USB I/F
J404 *3 *3 *4
J7 /J8 /J10
*2
Printer Controller NCU PCB
PCB
2-Line/4-Line
conversion circuit
Communication
Control
Dial pulse
generation
USB serial
circuit
number notice J4
Off-hook
function
detection
circuit
Smoothing
Line voltage
conversion circuit
J701 J1/J2/J6
J318 J81 *2 /J320 *2 /J321 *3
Sensor detection
Memory function
ESS control
Speaker control *2
*1
J310 J311
J3102
ADF *1
M2
Reader motor
Original
sensor
PS6
J502
J3112
Registration
sensor
PS7
J601
J3113
Sensor PCB
Original
ADF delivery
Contact sensor
sensor
home position (copyboard cover)
open/close
sensor
PS8
sensor
J3114
PS1 PS2
ADF motor
M3
J3110
Delivery
sensor
Fixing assembly Cartridge
PS3
J1051
J7 J109 J105/ J206 J205/J207/208/J209
J107/
PS101
LGL paper
Power supply PCB sensor
DC controller PCB
Switching
Fixing heater control block
regulator
High-voltage control block
Drive control block
J106/ J202/
*2
J102
J108 J203 Sensor detection
Image processor PCB
interface block
Waste toner full
detection function
J103/104
J301/302
Image processor PCB
J316 J312
J801 J3120 J3123
J3124
FM1
M4 M1
Scanner Main
motor motor
*1 : If equipped with ADF functions.
*2 : If equipped with fax functions.
*3 : If equipped with fax functions and 230V model.
*4 : If equipped with fax functions and 120V model.
F-3-2
Toner bottle
Humidity sensor
sensor
HS
PS11
J6521 J6531
J652 J653
Waste toner
Sensor relay
full sensor
PCB
PS10 J651
J2521
J252 J251
PS102 PS103
Paper leading Cassette
edge sensor paper sensor
Laser control block
Horizontal sync signal control
Scanner motor control
Cartridge detection mechanism
Toner level detection
mechanism
J204/201
J303/304
J309 J307 J314 J308
J3081
SL1 SL2 SW2 SW1
PS4
0006-2838
0006-4284