Board Structure - Ricoh B230 Training Program

Board Structure

BICU (Base Engine Control Unit):
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The BICU controls all the mechanical components. The BICU has six CPUs. The
CPUs control the following functions:
• Engine sequence
• Engine operation
• Polygon motor control
• Image processing
Controller:
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.
SBU:
The Sensor Board Unit has a CCD (charge-coupled device) and an analog-to digital
conversion circuit.
Operation Panel Board:
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.
FCU:
The FCU (fax controller unit) controls the fax programs and communicates with the
controller to share copier resources.
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