Construction; Functional Construction - Canon iR C6800 Series Service Manual

4.1 Construction

4.1.1 Functional Construction

The machine's main controller block consists of the following components that serve specific functions:
Item
Main controller PCB (main)
Main controller PCB (sub)
Expansion bus PCB
SRAM PCB
Image memory (SDRAM)
BOOTROM
HDD
T-4-1
Description
controls the system, memory, and printer output image processing.
processes reader input images.
controls the color LCD and card reader interface.
retains service mode settings and HDD control data using SRAM.
stores image data temporarily.
stores the boot program.
stores the system software; retains Box/fax function image data.
Chapter 4
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4-1