Canon IR3300, IR2800, IR2200 manual Outline, Main Controller PCB, Hdd, T02-102-01, T02-102-02

CHAPTER 2 MAIN CONTROLLER

1.2 Outline of the Electrical Circuitry

1.2.1 Outline

The major electrical mechanisms of the controller block are controlled by the CPU on the main controller PCB. The CPU, RAM, DIMM, and the ICs and HDD around the CPU have the following functions:

1.2.2 Main Controller PCB

Name	Description
CPU	• Controls the processing of image data from the reader unit.
	• Controls the processing of image data to the printer unit.
	• Controls the HDD.
	• Controls the interface of the following: network, DMA controller, PCI,
	and ROM/RAM.
RAM	• Stores program data and image data temporarily.
DIMM-ROM	• Stores the system control program.
	• Stores the boot program.

	T02-102-01
1.2.3	HDD
Item	Description
HDD	• Sores the system software.
	• Stores image data for the Box function.
	T02-102-02

2-2 S COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001