Outline Of Electrical Circuitry; Outline; Dc Controller Pcb - Canon iR5000 Service Manual

CHAPTER 2 SEQUENCE OF OPERATIONS

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

Name
CPU • 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
RAM • Stores service mode data
• Stores user mode data
• Stores control data
DIMM ROM • Flash memory for storing control program
EEP-ROM • Backs up RAM data
ROM • Mask ROM for control program (for future use)
2-2 P
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T02-102-01 List of Control Items
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Description
2000 2000 2000 2000 CANON iR5000/iR6000 REV.0 JULY 2000