Ricoh B286 Service Manual page 600

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