Construction; Construction And Mechanisms; Construction Of The Electrical Circuitry; Image Processor Pcb - Canon iR2020 Series Service Manual

3.1 Construction

3.1.1 Construction and Mechanisms

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
The machine's main controller block consists of the following and has the following functions:

3.2 Construction of the Electrical Circuitry

3.2.1 Image Processor PCB

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
The following is a diagram showing the major control mechanisms of the Image Processor PCB according to connectors:
Item

Image Processor PCB

Image memory (SDRAM)
Flash ROM
USB port
Reader Unit
USB port
DC controller PCB
T-3-1
Description
Controls system operation, memory, printer unit output, image
processing, printer unit image input processing, card printer
unit interface, fax image
processing, etc.
Temporarily retains image data (128 MB; 256 MB max.)
Stores system software and retains user data/service data
USB2.0 interface
Image Processor PCB
Image memory
(SDRAM)
F-3-1
Flash ROM
Chapter 3
0010-7009
0010-6854
3-1