Component Descriptions - Gestetner B070 Service Manual

BOARD STRUCTURE

6.8.2 COMPONENT DESCRIPTIONS

This machine employs Ricoh GW (Grand Work) architecture that allows the copier
to be expanded as an MFP (Multi-Function Product) by installation of simple
modular components (ROM DIMMs) on the controller board.
Here is a summary of the main parts of the board structure.
NOTE: The DIP switch settings and the board should not be changed. For details,
please refer to the "Specifications", the last section of this manual.
BCU (Base Engine Control Unit): This is the main control board that controls the
engine sequence, timing for peripherals. The BCU also controls:
• High voltage
• Duplexing
• Paper feed
• Paper registration
• Fusing
• Peripheral interfaces
• Drive
• Toner supply
Controller Board: The controller board controls all devices for memory DIMMs,
HDD, copying, printing, and scanning. The controller board also provides all the
connection points for easy installation of the options (printer, scanner, FireWire,
wireless LAN, and so on). The controller board also controls:
• Printer/scanner
• Document server
• Image rotation
• Conversion of all image formats
• Image compression and decompression
Mother Board: Interfaces the controller and the IPU, and installed options.
IPU (Image Processing Unit): Contains large-scale integrated circuits that
perform image processing on the digital data sent from the SBU, then sends the
processed data to the controller and then to the LD unit. Also relays data
transmissions between the controller and LCDC.
B070/B071
CÓPIA NÃO CONTROLADA
6-34
CÓPIA NÃO CONTROLADA
SM