Power Supply; Outline - Canon iR5000 Service Manual

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3. Power Supply

3.1 Power Supply

The machine's DC power supply is controlled by the DC power supply PCB; the associ-

ated PCBs, parts, functions, and arrangement of distribution are as follows:

DC power supply PCB

Rush current prevention

Main power switch

Environment switch

Cassette heater switch

Main relay (RL1)

• Generates DC power from AC power.

• Protects against overcurrent.

• Limits rush current to the fixing/feeding assembly, duplexing

unit, and high-voltage PCB.

• Protects the lens heater (H6) and mirror heater (H7) against

overcurrent.

• Serves as the power switch of a load other than the drum

heater (H3), cassette heater (H4), and deck heater (H5).

• When off, the drum heater (H3) operates in conjunction with

the turning on/off of the main power switch; if on, the drum

heater (H3) will remain powered at all times.

• Serves as the switch to turn on/off the cassette heater (H4)

and deck heater (H5).

• Cuts off the AC line to the fixing heater and AC driver.

2000 2000 2000 2000

CANON iR5000/iR6000 REV.0 JULY 2000

CHAPTER 7 EXTERNALS AND CONTROLS

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