2. Product specifi cations and descriptions
Service Manual
ML-331x/371x series
2-28
Samsung Electronics
ML-371x series Main Controller is composed with below components
- CHORUS4 : To generate the printable video data and control engine
Embedded USB2.0 device, Host channel
- On board DDR2 SDRAM and external DDR2 SO-DIMM : system memory
On board DDR2 - 371xD : 64MB, 371xND/DW :128MB
External DRR2 SO-DIMM : 128MB, 256MB
- Giga Ethernet PHY : Network printing
- Serial Flash(16MB) : Program memory
- Engine Controller(LEPC1) : ADC, DAC, Clutch, Fuser control
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 Giga N/W PHY, USB Device, Wireless Module.
[ Main Controller Diagram ]
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