Ricoh B286, Service Manual

Page: 600 / 622

Electrical Components
B286/B289 6-92 SM
NUMBER NAME DESCRIPTION
PCB3 Operation Panel
This contains the operation keys, touch-panel
LCD, and the LEDs. It is controlled by the
MCU.
PCB4 PSU (Power Supply Unit)
This supplies dc power for the machine,
heaters, and dehumidifiers in the roll feeder.
PCB5
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).
PCB6
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).
PCB7
SIB (Scanner Interface
Board)
This controls the scanner, and is an interface
board for the IPU and MCU.
PCB8 Mother Board
Interfaces with the controller, IPU, and
optional devices such as interface board for
the printer controller.
PCB9 VDB (Video Drive Board)
This controls the image signals that are sent to
the LPH (LED Print Head).
PCB10 Controller Board
Controls the memory and all peripheral
devices. The GW architecture allows the
board to control all applications (copying,
printing, and scanning).
PCB11 Interface Board
Option. This relay board must be installed with
the external printer controller for interface
between the server PC and the copier.
PCB12
File Format Converter
(MLB)
Option.