Xerox C2424 Service Manual - Page 52
Scanner and Document Feeder Calibration, Automatic Calibration
UPC - 095205676532
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Scanner and Document Feeder Calibration There are two types of calibration for the scanner and document feeder: automatic calibration and manual calibration. Automatic Calibration The automatic calibration performed by the sytem is a "white balance" calibration performed during startup and at pre-programmed intervals of operation. This calibration ensures that the system detects the response to a given calibration spot and determines the effects of lamp temperature and age on the image quality of the system. Automatic calibration uses built in targets of the system. The target for the flatbed is on the back of the diverter strip; the target for the DADF is located on the back of a moveable flap, internal to the DADF. The calibration is automatic at power-up, when coming out of energy star mode, and at a predetermined schedule based on the length of time the lamps have been on continuously. Automatic DADF Calibration Calibration for the DADF is performed at initial power-up and "as required" with normal usage of the DADF. The steps are the same for both conditions. 1. The lamps turn on. 2. The calibration strip moves back slightly from the home position, to confirm the home position, then extends into the image path. Calibration Strip s2424-272 2-8 WorkCentre C2424 Service Manual