Read Panasonic KX-FLB883RU Service Manual online
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KX-FLB883RU
6.2.
General Block Diagram
MAIN UNIT
SOC (IC300)
This custom IC is used for general MFP operations.
ROM (IC402)
This 16MB FLASH ROM contains all of the program instructions on the unit operations.
And support the backup of user setting and FAX receive data.
And support the backup of user setting and FAX receive data.
DOUBLE DATA RATE SYNCHRONOUS DYNAMIC RAM (IC400 and IC401)
These 2pcs of 128Mbit DDR SDRAM are used for CPU work and receiving memory and page memory.
POWER SUPPLY
DC-DC converters generate 3.3V, 2.5V and 1.2V for system power.
Regurator generates 5V for peripheral devices.
Regurator generates 5V for peripheral devices.
TEL/FAX I/F
Composed of ITS circuit and NCU circuit.
3 ICs called SDAA(Silicon Direct Access Arrangement) control Telephone line, Speaker, and Handset.
3 ICs called SDAA(Silicon Direct Access Arrangement) control Telephone line, Speaker, and Handset.
READ SECTION
CIS Unit to read transmitted documents.
CIS Unit is connected to FLATBED transit Unit.
Scan data is converted by AFE(IC503).
CIS Unit is connected to FLATBED transit Unit.
Scan data is converted by AFE(IC503).
MOTOR
This model has 1 DC motor and 2 stepping motors.
IC300 drives the DC motor for printing.
IC502 and IC700 drive the stepping motor for Auto Document Feeder motor and CIS carriage.
IC300 drives the DC motor for printing.
IC502 and IC700 drive the stepping motor for Auto Document Feeder motor and CIS carriage.
LSU
Forms the images on the OPC DRUM by rotating polygon motor and reflecting the laser beam against polygon.
SENSORS
Composed of 6 switches and 6 sensors.
POWER SUPPLY BOARD
Supplies +24V and +7V to the Main unit and controls the Heat Lamp.
HIGH VOLTAGE POWER SUPPLY BOARD
Supplies bias need for the printing operation: bias of the DRUM, Developing and Transcription.
FIXING UNIT
Composed heat lamp,thermistor and thermostats.
1)
CPU
ARM11 operating at 400MHz.
2)
DDR SDRAM Controller
Controls DDR (Double Data Rate) SDRAM Memory.
3)
USB Controller with PHY
Apply to USB2.0 HS
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 the 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.
Convert the analog signal to the digital signal.
12) RTC
Real time clock.
13) MODEM
Performs the modulation and the demodulation for FAX communication.
14) Analog Front End I/F
Controls the DAA device for TEL/FAX function.
15) LAN Controller
Ethernet Control.
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