Main Controller (M337X_M387X_M407Xfr_M4072Fd) - Samsung ProXpress M387 Series Service Manual

2.2.5.1. Main Controller (M337x_M387x_M407xFR_M4072FD)

ProXpress M332x series / M382x series / M402xFR /M4072FD main controller is composed with below components.
•
A1500 : To generate the printable video data and control engine / Embedded USB2.0 device
•
DDR3 SODIMM : 256MB
External DDR3 SODIMM : 512MB (Not supply for SL-M4070FX/4075FX)
•
Ethernet PHY : Network printing
•
NAND Flash : Program memory (128MB)
•
MicroSD Memory : 4GB (SL-M4070FR/4075FR only)
The main controller manages an Electro-photography system, controls the video data of printing images from main board
to LSU, provides high-voltages and PWMs, adjusts temperature in the fusing system, reads sensor signals and controls
SCF option.
The main controller also controls OPE and N/W PHY, USB Device, Wireless Module.
Main Controller Diagram
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2. Product Specifications
2-28