Main Pcbs - Ricoh S-C3 F Service Manual

6. Detailed Section Descriptions

Main PCBs

SBU (Sensor Board Unit)
6
The SBU receives analog signals from the CCD and converts these into digital signals used for image
processing.
Buffer
Used for driving the CCD. Includes a 3V/5V converter (converts the CALDA 3V drive signal to 5V).
CCD
Converts light reflected from the original into an electrical signal. This machine uses a color CCD. Scan
density is 600 dpi. Pixel size is 7 x 7 microns. Maximum pixel rate is 10 Mhz.
246