Logic; Logic Block Diagram - Canon QY8-1360-000 Service Manual

Part 4: Technical Reference

4.2 Logic

4.2.1 Logic block diagram

Parallel
Interface
Error Indicator
Power Indicator
DRAM (IC5)
4-Mbit
I/O0 A0
to to
I/O7 A9
DRAM
Data
Bus
DRAM
Address
Bus
I/O0 A0
to to
I/O7 A9
DRAM (IC6)
4-Mbit
Address Bus
Address Data Bus
DBUS0 ABUS1
to to
DBUS15 ABUS20 RD
INIT0 to INIT3
Reset IC
RESET
Printer
20MHz
Controller
Paper End
(IC2)
Sensor
LED0
to Pickup Roller
LED2
Sensor
Purge Sensor
IP0
Paper Feed
Motor
IP1
PWMA,
PWMB
RAMB0
Carriage
to
Motor
RAMB15
RAMA0
to
RAMA9
RANKOM BE0 to 2
RANKBK IDATAOM
INKOUT
RANKPH IDATABK
Ink-out
RANKCL IDATAPH
IDATACL
Detection
EVENE
Circuit
ODDE
HEATEOM
ANT,PHANT
HEATEBK
HEATEPH
HEATECL
LTCLK
LTRST
Figure 4-30 Logic Board Block Diagram
D0
to
RD
D15
INIT0 to INIT3
RESET
MPU
(IC1)
P104
P103
P102
TA04,TA05
TA10,TA11
P137,
Driver IC
TA12 to TA15
PM
T00 to T03
Driver IC
PM
P144 to P147
P73 to P75,T0
AN6
AN7
P101
ID1OM
ID1BK
ID1PH
ID1CL
ID2OM
Printer Home
ID2BK
Temperature Position
ID2PH
Sensor Sensor
ID2CL
Carriage Board
BJ Cartridge
4-40
BJC-7100
A11 D0 A0
to to to
A30 D15 A18
RD OE
CS0 CE
Control
ROM
(IC3)
2kbit
EEPROM
Transistor Buzzer
BZ
P105
P155 POWER button
RESUME button
P156
P157 REPLACE button