Ricoh B230 Service Manual page 803

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control the following functions:

Engine sequence

Engine operation

Polygon motor control

Image processing

The controller connects to the BICU through a PCI bus. The controller handles the

following functions:

Machine-to-host interface

Operation panel interface

Network interface

Interfacing and control of the optional IEEE1284, Bluetooth, IEEE1394, IEEE802.11b

(wireless LAN), USB Host, HDD, and DRAM DIMM

LD Drive Board:

This is the laser diode drive circuit board.

The Sensor Board Unit has a CCD (charge-coupled device) and an analog-to-digital

conversion circuit.

Operation Panel Board:

This controls the display panel, the LED and the keypad.

Scanner I/O Board (SIO):

The scanner I/O board is a circuit board that transmits control signals, image data, and

electricity.

I/O Board (IOB):

Contains drivers for motors and other mechanical components.

Motherboard:

Connects the FCU board to the BICU. This board is supplied with the optional fax unit.

The FCU (fax controller unit) controls the fax programs and communicates with the

controller to share copier resources.

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