General Block Diagram - Panasonic KX-FLB852CX Service Manual

7.2.

GENERAL BLOCK DIAGRAM

The following is an outline of each device IC on the digital board.
1. SOC(IC600)
Mainly Performing program working and the image processing.
CPU:ARM9 DSP:Quatro DMA Function
Main Function
1) SDRAM Controller
2) USB Controller with PHY.
3) SCANNER I/F
4) Printer I/F
5) I/O Port
6) System Bus I/F
7) Serial I/F
2. G/A (IC604)
Controls the operation panel I/F.
Controls the LSU I/F.
Controls FANs, LEDs and Sensors and analog I/F.
Control the motor (DC motor and Stepping Motor)
Real Time Clock circuit
Controls the high Voltage Unit control
Contains A/D converter
3. Flash ROM (IC602)
This 128 Mbit FLASH ROM contains all of the program instructions on the unit operations.
4. Synchronous Dynamic RAM (IC601)
This memory is used for Program working and Image processing.
5. Modem (IC607)
Performs the modulation and the demodulation for FAX communication.
Detect the CALLED ID signal.
6. Read Section
CCD Unit to read transmitted documents.
CCD Unit connected to FLATBED transit Unit.
Scan data is converted by Analog Front End on FLATBED transit unit.
7. Motor Driver
Drives the DC motor for Printing.
Drives the Stepping Motor fot Auto Document Feeder and CCD carriage.
8. LSU (Laser Scanning Unit)
Forms the images on the OPC drum by rotating polygon motor and reflecting the laser beam against polygon.
9. Analog Board
Composed of ITS circuit and NCU circuit. 3sensors (pickup.paper.drum)on the board.
10. Sensor Section
Composed of 22 sensors (switches). (contains optional parts)
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KX-FLB852CX / KX-FLB852CXS