Samsung SL-X7600GX Service Manual page 143

2. Product Specifications and Description
5) Block Diagram
The DCF board controls all functions for DCF Assy. It consists of CPU, Motor drive IC.
The Micom in the board receives the information from the paper size sensor, Pickup No-paper Sensor, Pickup Level Sensor,
Prefeed sensor etc. and communicates with the copier main board through the UART.
When being received the print job command from the interface connector (CN301) through UART, DCF board drives the
feed motor and pick up motor to pick up a paper.
This board has 2 LEDs. The lower LED is for checking 3.3V power supply and the upper LED is checking the micom
operation.
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