Ricoh D093, Service Manual

Page: 64 / 779

Overview
D093/D094 2-22 SM
NUMBER NAME DESCRIPTION
PCBs
PCB1 SIPU
Scanner Image Processing Unit . This
processes image data from the CIS (Contact
Image Sensor), and sends it to the VDB
(Video Drive Board) and LPH (LED Print
Heads). The SIPU also controls the HDD unit
and the PC interfaces.
PCB2 MCU
Main Control Unit. This is the machine's main
board. It contains the SCU (Scanner Control
Unit) and ECU (Engine Control Unit). These
units control all parts of the machine, and this
includes the print engine, scanner, and image
processing.
PCB3
PSU (Power Supply
Unit)
This supplies dc power for the machine,
heaters, and dehumidifiers in the roll feeder.
PCB4
RFDB (Roll Feed Drive
Board)
This is attached to the optional roll feeder. It
controls the components of the roll feeder
(motor, clutches, sensors, and switches).
PCB5
SFDB (Sheet Feed
Drive Board)
This is attached to the optional paper cassette.
It controls the components of the paper
cassette (motor, clutches, sensors, and
switches).
PCB6
SIF (Scanner Interface
Board)
Interfaces between the SIPU and CIS.
PCB7 Mother Board
Interfaces with the controller, SIPU, and
optional devices such as interface board for
the printer controller.
PCB8
VDB (Video Drive
Board)
This controls the image signals that are sent to
the LPH (LED Print Head).