Konica Minolta BIZHUB 25E Field Engineering Manual page 71

Main control board
This board controls the MFP system. By inserting the USB memory stick, firmware can be updated.
The main devices mounted on the main control board and their functions are as follows:
Devices
SoC Controls the following operation:
• DDR2 memory controller
• USB controller (USB Host/Function)
• Image processing (Pixel input/output)
• I2C I/F (Billing data, consumables Tag: toner and drum)
• Motor controller (FBS and ADF)
• Synchronous serial I/F (SPI), (Panel FPGA/MPU)
• USART(SPI) (NCU, printer/scanner FPGA, BootROM)
• Real Time Clock (Backup by an electric double-layer capacitor )
• Ethernet MAC
• General I/O (Printer and scanner sensors, printer clutches, fans)
• SD card I/F
FPGA Controls the following operation:
• Converts and transfers the output data to LED print head at its format.
• High-voltage power board (Charging, grid, developing, toner supply, transfer)
• General I/O (Printer and scanner sensors, printer clutches, fans)
• Eraser lamp
• Print motor
• Toner motor
• Mechanical counter (option)
• Cassette board (sensor and clutch) (option)
• 2bin tray board (sensor and motor) (option)
MD0033 This is the FPGA for image processing of scanned image.
Offsets or gains the analogue signal from CIS, performs analog to digital (A/D)
conversion, and inputs the signal to image processing section of the fax en-
gine.
Motor driver Drives the motors in the scanner section (FBS and ADF).
MD0035 (Flash) Stores the Boot ROM (program) data.
This is a non-volatile memory, and the data will not be erased when the ma-
chine is shut down.
DDR2-SDRAM Stores image data.
This is a volatile memory with no-backup, and the data will be erased when the
machine is shut down.
SD card This stores the firmware.
This is a non-volatile memory, and the data will not be erased when the ma-
chine is shut down.
I2C EEPROM This stores the billing data.
This is a non-volatile memory, and the data will not be erased when the ma-
chine is shut down.
Details
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