Canon multipass c3000 Service Manual (en)

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2.5 Circuit Overview
2.5.1 Printer circuit
This printer circuit is the same as the circuit for the facsimile printer.  This section explains
the operations of the circuit in printer mode.
Chapter 2: Technical Reference
2-5
Driver IC
(IC 12)
Driver IC
(IC 6)
Sub-
heater
Carriage
motor
Home position
sensor
BJ head
Paper feed
motor
Printer
controller
(IC5)
System controller (2/3)
(IC401)
ROM
8M bit
(IC3)
Temperature
sensor
DRAM 4M bit
(IC4)
Data Bus D0 to D15
Cartridge detection
Bi-Centronics
interface
Printer control
 section
M
M
MPU
(PRINTER)
(IC1)
20MHz
EEP ROM
(IC8)
Heater
driver
Heater
driver
Address Bus A0 to A23
Driver IC
(IC 302)
Document feed
motor
M
Pickup roller
sensor
System control section
Paper edge
 sensor
Figure 2-4 Printer Circuit Block Diagram