Board Structure
SM 6-13 D017/D018/D019/D020
Detailed
Descriptions
 Engine sequence
 Timing control for peripherals
 Image processing control and video control
 Operation control
 Drive control for the sensors, motors, and solenoids of the printer and scanner
 High voltage supply board control
 Fusing control
PSU (Power Supply Unit)
Provides dc power to the system and ac power to the fusing lamp and optional heaters.
Operation Panel
Controls the operation panel user interface (key input) and the LCD display.
IPU (Image Processing Unit)
The IPU board does the image processing (auto shading, filtering, magnification, gradation
processing), and finally sends the data to the LD drive board. The IPU also functions as a
motherboard because it has connection points for the GW controller and FCU. The ICIB
(Illegal Copy Interface Board) also connects directly to the IPU
Scanner Board (Mono or Color)
The machine can have either a black-and-white or color scanner unit. Although the
machine does not print color, the color scanner provides color scanning for applications
such scan-to-email, scan to PDF, etc. Either unit is installed (not both).
 SBU (Sensor Board Unit). Converts the analog signals to 8-bit digital signals, and then
sends them to the IPU for processing.
 SIU (Scanner Interface Unit). Interface between the scanner unit and the IPU.
LD (Laser Diode Board)
The laser diode board is controlled directly by the GAVD mounted on the IPU.
GW Controller
Controls the memory and the fax/scanner/printer options. The NIB (Network Interface
Board) and USB 2.0 interfaces are built into the controller board and do not require
installation.
Fax Unit D361. The fax unit is an option for this machine. A G3 option is also available.
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