Panasonic DP-MB310EU, Service Manual

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KX-MB2230EU/ KX-MB2270EU/ KX-MB2515EU/ KX-MB2545EU/ KX-MB2575EU/ DP-MB310EU
6.2. General Block Diagram
MAIN Board
SOC (IC300)
This custom IC is used for general MFP operations.
ROM (IC402) (KX-MB22*0:8MB, others:16MB)
This FLASH ROM contains all of the program instructions on the unit operations.
And support the backup of user setting and FAX receive data.
(except KX-MB2*1*)
Synchronous Dynamic RAM (IC400/IC401)
This 512Mbit SDRAM is used for CPU work and receiving memory and page memory.
POWER SUPPLY
DC-DC converters generate 3.3V and 1.2V for system power.
Regulator generates 5V for system power and 2.5V for SPT IC power.
TEL/FAX I/F (except KX-MB2*1*)
Composed of ITS circuit and NCU circuit.
3 ICs called SDAA (Silicon Direct Access Arrangement) control Telephone line, Speaker and MIC.
ASIC(SPT,IC500)
This custom IC is used for laser control.
Wireless LAN module(IC850) (KX-MB2*7* ONLY)
Apply to IEEE802.11b/g/n.
READ Section
CIS Unit to read transmitted documents.
Scan data is converted by AFE(IC503).
Motor
This model has 2 stepping motors and one DC motor.
IC502 drives the stepping motors for CIS carriage and Auto Document Feeder.
Main Motor is a DC motor.
LSU
Forms the images on the OPC DRUM by rotating polygon motor and reflecting the laser beam against polygon.
Sensors
This model has :
2 switches and 11 sensors for KX-MB22**.
2 switch and 13 sensors for KX-MB25**/DP-MB***.
1) CPU ARM9 operating at 250MHz.
2) SDRAM Controller Controls SDRAM Memory.
3) USB Controller with PHY ch1:USB device (Apply to USB2.0HS)
ch2:USB host (Interface with WLAN IC) (KX-MB2*7* ONLY)
ch3:USB host (USB memory) (KX-MB25**/DP-MB*** ONLY)
4) Scanner I/F Controls the CIS and AFE, and process the scan images.
5) LSU I/F Controls the polygon motor and outputs the VIDEO signal to LSU.
6) MOTOR I/F Controls DC motor and Stepping motor.
7) FAN I/F Controls FAN MOTOR and detect the rotation of FAN MOTOR.
8) OPERATION PANEL I/F Serial interface with Operation Panel.
9) SENSOR I/F Detects the sensor signal.
10) I/O PORT I/O Port Interface.
11) A/D, D/A converter Sends beep tones, etc.
Convert the analog signal to the digital signal.
12) RTC Real time clock.
13) MODEM Performs the modulation and the demodulation for FAX communication.
(except KX-MB2*1*)
14) Analog Front End I/F Controls the DAA device for TEL/FAX function.
(except KX-MB2*1*)
15) LAN Controller Ethernet control.