Canon iR5000 Service Manual page 48

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CHAPTER 2 MAIN CONTROLLER

1.2 Outline of Electrical Circuitry

1.2.1 Outline

The major mechanism of the controller block are controlled by the CPU on the main con-

troller PCB. The CPU, such ICs as RAM and DIMM used in association with the CPU, and

hard disk drive have the following functions:

1.2.2 Main Controller PCB

• Controls image processing of input image data from the reader unit.

• Controls image processing of output image data to the printer unit.

• Controls the hard disk drive.

• Controls the network interface, DMA controller, PCI interface, and ROM-

RAM interface.

• Controls the RAM interface.

• Temporarily stores program data and image data.

• Stores the system control program.

• Stores the boot program.

1.2.3 Hard Disk Drive

• Stores the system software.Box

• Stores image data as part of the box function.

T02-102-01 List of Control Items

2000 2000 2000 2000

CANON iR5000/iR6000 REV.0 JULY 2000

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