KX-MB1500UCB, KX-MB1500UCW, KX-MB1520UCB, KX-MB1530UCB - Panasonic Fax Service Manual (repair manual). Page 16

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KX-MB1500UC/KX-MB1520UC/KX-MB1530UC

This custom IC is used for general MFP operations.

This 8MB FLASH ROM contains all of the program instructions on the unit operations.
And support the backup of user setting and FAX receive data. (KX-MB1520/KX-MB1530 ONLY) 

This 256Mbit SDRAM is used for CPU work and receiving memory and page memory.

DC-DC converters generate 3.3V and 1.2V for system power.

TEL/FAX I/F (KX-MB1520/KX-MB1530 ONLY)

Composed of ITS circuit and NCU circuit.
Analog circuit and two AFE (Analog Front End) IC control Telephone line, Speaker and MIC.

CIS Unit to read transmitted documents.
Scan data is converted by AFE(IC503).

This model has 2 stepping motors.
IC600 drives the stepping motor for printing.
IC502 drives the stepping motor for CIS carriage. (KX-MB1500/1520 ONLY)
IC502 drives the stepping motors for CIS carriage and Auto Document Feeder. (KX-MB1530 ONLY)

Forms the images on the OPC DRUM by rotating polygon motor and reflecting the laser beam against polygon.

Composed of 2 switches and 3 sensors. (KX-MB1500/1520 ONLY)
Composed of 2 switches and 5 sensors. (KX-MB1530 ONLY)

Supplies +24V and +5V to the Main unit and controls the Heat Lamp.

Supplies bias need for the printing operation: bias of the DRUM, Developing and Transcription.

Composed heat lamp, thermistor and thermostats.

1)

CPU

ARM9 operating at 250MHz.

2)

SDRAM Controller

Controls 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 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. (KX-MB1520/KX-MB1530 ONLY)

13) MODEM

Performs the modulation and the demodulation for FAX communication. (KX-MB1520/
KX-MB1530 ONLY)

14) Analog Front End I/F

Controls the analog circuit for TEL/FAX function. (KX-MB1520/KX-MB1530 ONLY)