Samsung CLX-8540ND Service Manual page 36

Product Overview
2.3.2.2 Engine Controller
The engine controller of CLX-8540ND comprises an ARM-based CPU (J4E), engine control SoCs (LPEC1
& LPEC3), SDRAM and Flash memories, and other drivers for mechanical elements. The engine controller
manages an electro-photography system, controls the Video Data of printing images from Video Board
to LSU, provides PWMs and control signals for high voltages, adjusts temperature in the fusing system, and
reads sensor signals. The Engine Controller also includes control units for optional SCF(s), HCF and
Finisher.
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Service Manual
Samsung Electronics