Board Structure - Ricoh G133 Service Manual

6.1.4 BOARD STRUCTURE

Overview
Descriptions
EGB (Engine control Board):
The EGB controls all the mechanical components and the following functions:
Engine sequence
Engine operation
Polygon motor control
Controller:
The controller connects to the EGB 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, IEEE802.11b (wireless
LAN), Gigabit Ethernet, USB Host, HDD, and DRAM DIMM
LD Drive Board:
This is the laser diode drive circuit board.
Operation Panel Board (OPU):
This controls the display panel, the LED and the keypad.
SM 6-5
Overview
G133