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1.3 Outline of the Electrical Circuitry
1.3.1 Functional Block Diagram
Memb-
*2
PC
LCD Speaker
rane
J4030 J4020
J403
J402
J404
Control panel
Printer Controller
PCB
PCB
Key detection
Communication
and LCD/LED
Control
drive
USB serial
number notice
LCD
function
function
Serial
Smoothing
communication
control
J401
J701
J315
J318
Drive control block
Control panel control block
Image processing control block
Communication control block
Speaker control
*2
J317
J310
J501
M2
Analog
Reader motor
processor
PCB
J503
J502
J504
J601
Sensor PCB
ADF
Contact sensor
(copyboard cover)
home position
open/close
sensor
sensor
PS1
PS2
COPYRIGHT © 2002 CANON INC.
Modular
Jack
*2
PCB
J911/J912
Parallel I/F
USB I/F
J7/J8
*2
NCU PCB
2-Line/4-Line
conversion circuit
Dial pulse
FT101 FT901
generation
circuit
J4
J902
Off-hook
detection
circuit
Line voltage
conversion circuit
J1/J2/J6
*2
J319/J320/J321
Image processor PCB
Sensor detection
Memory function
ESS control
*1
J311
J3102
ADF
*1
Original
sensor
PS6
J3112
Registration
sensor
PS7
J3113
Original
delivery
sensor
PS8
J3114
ADF motor
M3
J3110
F04-103-01
2000 2000 2000 2000
CANON SmartBase PC1210D/1230D/1270D REV. 1 MAR. 2002
Delivery
sensor
Fixing assembly
PS3
J1051
J107
J105/
J206
J107/
Power supply PCB
Switching
regulator
Fixing heater control block
High-voltage control block
J102
J902
Drive control block
Sensor detection
Image processor PCB
interface block
J103/104
J301/302
J316
J312
J801
J3120
J3123
M4
M1
Scanner
Main
motor
motor
*1 : If equipped with ADF functions.
*2 : If equipped with fax functions.
CHAPTER 4 OPERATION
Cartridge
PS102
J205/J207/208/J209
Paper leading
edge sensor
DC controller PCB
Laser control block
Horizontal sync signal control
Scanner motor control
Cartridge detection mechanism
Toner level detection
mechanism
J204/201
J303/304
J309
J307
J314
J3124
FM1
SL1
SL2
SW1
PS103
Cassette
paper sensor
J308
PS4
4-5
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