Samsung SL-X7600GX Service Manual page 156

2. Product Specifications and Description
5) Block Diagram
The LCT board controls all functions for LCT Assy. It consists of CPU, Motor drive IC.
The Micom in the board receives the information from the 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, LCT board drives the
Tray feed motor and Tray pickup motor to pick up a paper.
This board has 2 LEDs. The right LED is for checking 3.3V power supply and the left LED is checking the Micom operation.
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