Logic Section; Logic Section Block Diagram - Canon BJC-2000 Service Manual

BJC-2000

4.2 Logic Section

4.2.1 Logic section block diagram

Printer Temperature
MCH0
ID0,1
HRES
HCLOCK
HDATA
HLATCH
BENB1 to 3
HENB0 to 3
ODDENB
EVENENB
AC Adapter
AC Inlet
ELECTRICAL SECTION
22.11MHz
Reset IC
Reset Switch
TSW1(PB3)
TSW0(PB2)
Door Switch
PS0/AN0
Sensor (TH1)
SCLOCK
SDATA
SLATCH
COM 0 to 3
C.CHK
C.CHA
BJ Cartridge
VHC,CVDC
Black BJ Cartridge
Heater (128 nozzles)
Color BJ Cartridge
Heater (136 nozzles)
Sub-Heater
Temperature Control
Heater
Head Temperature
Sensor
Rank Resistor
Figure 4-21 Logic Board Block Diagram
MECHANISM SECTION
Paper Feed Roller
Purge Unit
Sheet
Feeder
Paper Feed Motor
Pick-Up Paper
Roller End
Sensor Sensor
VH
(+24.0VDC)
Vcc
(+5VDC)
Bi-Directional
Interface Control
Figure 4-22 Printer Block Diagram
Address Bus A1 to A21
Data Bus AD0 to AD15
CS0
DRAM Bus
MA0-9
MA0-9
MD0-15
MD0-15
PE4-7
CR0-3(P60-63)
PWMA(P72)
PWMB(P73)
Driver IC
PM
CHSMI(P82)
CRSTBY(P83)
LA(P90), LA(P91)
Driver IC
PM
LB(P92), LB(P93)
PES(P41)
Paper End Sensor PS1
RRS(P33)
Pick-Up Roller Sensor
Home Position Sensor
HPS(P40)
HVH
HVDD
Scanner Cartridge
(Option)
Scanner Controller
CCD
LEDs (R,G,B)
Home Position Sensor BJ Cartridge
Carriage
Carriage Motor
J4
J3 J5
Mechanism Cartridge
Control Control
Temp.
Logic Board
Sensor
(
Switch Detection
J2
RESET Button
4-25
Part 4: Technical Reference
CE
DRAM
1-Mbit
A0-9
8-Mbit
DO1 -16
EEPROM 1 Kbit
Carriage Motor
Paper Feed Motor
Scanner Cartridge (Option)
Scanner
Controller
CCD
LEDs
(R,G,B)
)
TH1