Construction Of The Electrical Circuitry; Outline; Main Controller Pcb - Canon iR C3200 Series Service Manual

5.2 Construction of the Electrical Circuitry

5.2.1 Outline

The major mechanisms of the main controller PCB are controlled by the CPU on the main controller PCB.
To save on physical space, the machineís main controller PCB is divided into two: main and sub.
The sub PCB serves to process input images coming from the reader unit, while the main PCB serves to control jobs,
output images going to the printer, and memory.

5.2.2 Main Controller PCB

Main Controller PCB (main)
IC No.
IC1012
IC1015
IC1003, 1018
IC1029
Image memory (SDRAM)
Boot ROM (Flash ROM)
Main Controller PCB (sub)
IC No.
IC10
IC15
T-5-1
Description
CPU: system control
network controller
PCI bus controller
serial communications controller
ROM/RAM controller
image input/output and image processing
image processing control of output image data to printer unit
HDD control
temporarily stores image data
storage of boot program
T-5-2
Description
image processing control of input image data from reader unit
input/output processing
Chapter 5
0000-4283
0000-4284
5-3