HP LaserJet 6p/mp Service Manual - Page 57
DC Controller/power system, Paper Motion Photosensors Paper Out, Paper Registration
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DC Controller/power system The DC Controller PCA coordinates all print engine activities, drives the laser, and coordinates print data from the Formatter PCA with the image formation process. The DC Controller also includes both AC and DC power supply and distribution circuitry. The DC Controller controls the following systems and functions: l Print Engine Control • Laser and Scanner Drive • Paper Motion Photosensors (Paper Out, Paper Registration, and Paper Exit Sensors) • Motor l Power System • AC Power Distribution • DC Power Distribution • Overcurrent/Undervoltage Protection • SleepMode • High Voltage Power Distribution Figure 5-2 shows the various DC controller loads. Formatter PCA Memory I/O Control Panel DC Controller CPU Delivery Paper Sensor HV Power Supply Power Supply AC Driver LV Power Supply Main Motor Drive Fuser Drive Laser/Scanner Assembly Laser Diode Toner Cartridge Charging Roller Developing Roller Bias Transfer Roller Motor Fusing Assembly Sensors/Solenoid Figure 5-2 DC Controller loads EN DC Controller/power system 55