Read Sharp AR-810 (serv.man11) Service Manual online
AR-651/810 IMAGE PROCESSING 7 - 7
7. 4. PLG Board (PWA-F-PLG-340)
7. 4. 1. Features
(1) The image processing ASIC on the PLG board is controlled by the CPU on the PLG board.
(2) The image processing functions of the PLG board realizes the following functions:
• Smoothing processing
• External input system interface
• Image area control
• Laser related control
7. 4. 2. Functions of image processing circuit
An image processing ASIC mounted on the PLG board enables the following functions:
(1) Smoothing processing
This function removes jaggedness and smoothes character outline of the text images input from the
external input system interface, then outputs them.
(2) External input system interface
This function controls the input interface between the PLG board and the SYS board (PWA-F-SYS-
340).
(3) Image area control
This function sets the effective image area of four directions for the image to be output.
(4) Laser related control
This function controls the APC (Auto Power Control) for the laser diodes.
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