PC-D320/PC-D340/FAX-L400 Chapter 2: Technical Reference
2-2
1.2 Printed Circuit Boards Layout
The following four printed circuit boards are located in this machine:
1.SCNT board that controls the entire system
• Operation panel control
• Scanner control
• Printer interface control
• Sensor detection
• Memory functions
• Energy Saver control
2.ECNT board used to control the operation of the laser scanner, motor, and solenoid as
well as pickup from the cassette.
A Power supply unit is also located in the ECNT board
• Fixing heater control
• High voltage control
• Drive control
• Sensors detection
• Laser control
• Scanner motor control
• Switching regulator as power supply
3.OPCNT board that controls the operation panel’s keys and LCD
• Keys detection and LED drive function
• Display
• Serial communication
4.USB board, which connects to the USB cable from the computer, for PC-D320/D340
only
• USB interface
5.NCU board, which interfaces with to the telephone line, for FAX-L400 only
• Hybrid circuit
• Line voltage conversion circuit
6.USB-MJB board, which connects to the telephone line, to the NCU board, and to
the USB cable from the computer, for FAX-L400
• Line interface
Содержание PC-D320
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