2-46 Phaser 6300/6350/6360 Color Laser Printer Service Manual
Theory of Operation
■ Low-Voltage Power Supply Board (LVPS)
Supplies AC power from the power source to the Fuser heater. Generates
and supplies stable low-voltage DC power (+3.3 VDC, +5 VDC, and +24
VDC) to be used for the logic and other circuits within the printer. The
LVPS includes the LVPS Board with attached Power Switch, the AC
Harness, and the box enclosure.
■ Engine Control Board
Controls printing operation based on the communication with the Image
Processor Board and input from the sensors and switches.
Major Functions:
■ Communicates with the Image Processor Board
■ Receives information from the sensors and/or switches.
■ Generates the video for the laser based on information from the
Image Processor Board.
■ Controls high-voltage sent to the Imaging Unit to perform charging,
development, primary and secondary transfer.
■ Distributes the low-voltage DC power from the Low-Voltage Power
Supply.
■ Controls the motor in the Main Drive Assembly, Developer Drive
Assembly, Fuser Drive Assembly, Duplex Motor Assembly and the
Toner Cartridge Holder.
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