2-42 Phaser 6180MFP Multifunction Printer Service Manual
Theory of Operation
Power Switch
The Power Switch turns the printer AC Power Supply On/Off.
Main Fan
The Main Fan removes heat from the printer to prevent overheating.
Electrically Erasable Programmable Read-Only Memory Board
The Electrical Erasable Programmable Read-Only Memory (EEPROM) Board
stores the machine unique information. Information on the EEPROM Board is
also stored on the Machine Control Unit (MCU) Board.
Humidity /Temperature Sensor
The Humidity/Temperature Sensor reads the humidity and temperature within
the machine.
Interlock Switch
The Interlock Switch is a switch that cuts the +24 VDC power supply to the
HVPS or Motor upon the opening of the Front Cover.
Low-Voltage Power Supply
Two types of Low-Voltage Power Supply (LVPS) are available: 100/120V and
230V. The LVPS supplies AC power from the power source to the Fuser
Heater; the LVPS also generates and supplies stable low-voltage DC power
used for the logic circuit. The LVPS contains a control circuit for the heater of
the Fuser, in addition to the power circuit.
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