MAIN PCBS
SM 6-11 B044/B045/B046
Detailed
Descriptions
6.5.2 SBU (SENSOR BOARD UNIT)
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 VPL's 3V
drive signal to 5V).
CCD
Converts light reflected from the original into an electrical signal. This machine
uses a Sony ILX553A (5150 pixel) CCD. Scan density is 600 dpi (for letter-
size originals). Pixel size is 7 x 7 microns. Maximum pixel rate is 15Mhz.
Amplifier
Inverts and amplifies the electrical signal from the CCD.
SBUFCU
+12V
+5VVD
COM 1
COM 4
VPL
Filter
Filter
Buffer CCD Amplifier
Analog Signal
B046D554.WMF
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