BOARD STRUCTURE
B039/B040/B043 6-6 SM
1. BiCU (Base Engine and Image Control Unit)
The main board controls the following functions:
• Engine sequence
• Timing control for peripherals
• Image processing, video control
• Operation control
• Various application boards (fax, printer)
• Machine control, system control
2. IOB (Input/Output Board)
The IOB handles the following functions:
• Drive control for the sensors, motors, and clutches of the printer and scanner
• High voltage supply board control
• Serial interfaces with peripherals
• Fusing control
3. SBU (Sensor Board Unit)
The SBU deals with the analog signals from the CCD and converts them into digital
signals.
4. IMB (IMAC and Memory Board)
The IMB stores the image data. (☛ 6.5.5 IMB)
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