Samsung MultiXpress K4 Series Service Manual page 116

2. Product Specifications and Description
6) 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, empty sensor, feed sensor etc. and
communicates with the copier main board through the UART.
When being received the print job command from the interface connector (CN7) through UART, DCF board drives the feed
motor and pick up motor to pick up a paper.
This board has 2 LEDs. The left LED is for checking 5V power supply and the right LED is checking the micom operation.
2-100 Copyright© 1995-2017 SAMSUNG. All rights reserved.