Signal Control Section; Control Board Block Diagram - Canon BJC 50 - Color Inkjet Printer Service Manual

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BJC-50

4.2 Signal Control Section

4.2.1 Control board block diagram

Lithium
Ion
Battery
Parallel I/F
Delivery Sensor
Charge LED
POWER SW
POWER LED
Beeper
Error LED
RESUME SW
CARTRIDGE SW
A: Printer Internal
Paper Feed
Motor
CR Motor
Paper Feed
Carriage
Motor Driver
Motor Driver
Re-
P63~P67
PA1~PA3
charge
A21
P70~73
Circuit
IFD0~7
BUSY
RXD,TXD
IrDA
MODE
FIRRXD
CSSEL
A S I C
SNM1
P64
LPB1
P65
LPB2, 3
23.04MHz
MD0~15
MA0~9
24MHz
IO 0~15 A 0~19
DRAM
4Mbit
Figure 4-27 Control Board Block Diagram
B: Voltage Input
Temperature
Recharging Battery
Head Rank
Voltage
Head ID
Recharge Current
Head Temperature
Battery Temperature
A
B
Analog
Switch
AD0~AD3
WHEAT
MCHE
BENB
HENB
P83
P87
(IC6)
P64
D 0~15 CE 1
A 1~21
P55
AD 0~16
A 0~15
Flash ROM/Font ROM
4Mbit / 8Mbit
4-35
Part 4: Technical Reference
BJ Cartridge
Scanner
Cartridge
EEPROM
32.768KHz
RTC
Home Position Sensor
Paper End Sensor

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