Canon iR5000 Service Manual page 48

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
Name
CPU • Controls image processing of input image data from the reader unit.
RAM • 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.
RAM • Temporarily stores program data and image data.
DIMM-ROM • Stores the system control program.
• Stores the boot program.
1.2.3 Hard Disk Drive
Name
HDD • Stores the system software.Box
• Stores image data as part of the box function.
2-2 S
T02-102-01 List of Control Items
T02-102-02
COPYRIGHT © 2000 CANON INC.
Description
Description
2000 2000 2000 2000 CANON iR5000/iR6000 REV.0 JULY 2000