Description - Ricoh A250 Service Manual

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1.8.2 DESCRIPTION

1. BICU (Base Engine and Image Control Unit)

The main board controls the following functions:

• Engine sequence

• Scanner, laser printer engine

• Timing control for peripherals

• Image processing, video control

• Operation control

• Various application boards (fax, printer)

• Machine control, system control

2. IOB (I/O Board)

The IOB handles the following functions:

• Drive control for the sensors, motors, and solenoids of the printer and

• High voltage control 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

4. EMB (Extended Memory Board) (Option)

The EMB stores the image data. An extra 48 MB of memory can be added. This

increases the number of pages that can be stored.

BOARD STRUCTURE

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