Xerox FaxCentre F12, Service Manual

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Circuit Description
WorkCentre Pro 412, FaxCentre F12 & 3/03 5-41
WorkCentre M15/M15i
5-4 Scanner
5-4-1 WorkCentre Pro 412 Scanner & WorkCentre M15/M15i Scanner
5-4-1-1 Summary
This flat-bed type device to read manuscripts has 600dpi CCD as an image sensor. There is one optical
sensor for detecting CCD home position and Scan-end position. The home position is detected by a optical
sensor which is attached to the CCD Module. The Scan-end position is calculated by the number of motor
steps.
CCD (WorkCentre Pro 412)
Contact Image Sensor improves productivity and allows a compact design.
This machine uses a color CCD.
• Minimum scan line time for one color: 5mS.
• Light source power: +12V.
• Maximum pixel frequency: 6 MHz.
• Effective sensor element: 5340 X 3.
• Clamp level: 0.7 to 0.8V.
• Bright output: min. 0.8V.
CCD (WorkCentre M15/M15i)
Charge Coupled Device improves productivity and allows a compact design.
This machine uses a color CCD.
• Minimum Scan Line Time for One Color : 2.5mS.
• Light Source Power : +18V
• Maximum Pixel frequency : 10MHz
• Effective Sensor Element : 5340 X 3
• Clamp Level : 0.7 to 0.8V
• Bright Output : min 0.8V