COPYRIGHT © 2001 CANON INC.
2000 2000 2000 2000
CANON iR5000i/iR6000i REV.0 JUNE 2001
CHAPTER 2 SEQUENCE OF OPERATIONS
2-2 P
1.2 Outline of Electrical Circuitry
1.2.1 Outline
The major electric mechanisms of the printer unit are controlled by the CPU on the DC
controller PCB; the principal functions of the major elements are as follows:
1.2.2 DC Controller PCB
T02-102-01 List of Control Items
Name
CPU
RAM
DIMM ROM
EEP-ROM
ROM
Description
• Controls jobs • Controls state of operation
• Controls fixing temperature • Controls high voltage
• Controls potential • Controls toner supply • Controls paper feeding
• Controls printing sequence • Controls output • Controls motors
• Controls finisher (accessory)
• Controls communications with controller unit • Controls service mode
• Stores service mode data
• Stores user mode data
• Stores control data
• Flash memory for storing control program
• Backs up RAM data
• Mask ROM for control program (for future use)