HP Designjet 2800/3800cp Service Manual - Page 131

C03. Line Sensor The purpose of this calibration is to calibrate the intensity of the line sensor in the carriage PCA. An incorrect calibration can result in edge-detection failures during media loading and incorrect reading of prints that are used for alignment or calibration. This calibration also identifies which type of Line Sensor has been installed and stores this information in the EEROM. Perform the line sensor calibration whenever the: D Edge detect procedure fails during media loading. D Carriage is disassembled or replaced. D Electronics Module is replaced. D Banding is detected in prints. D Misalignment between colors is detected. D There is a color consistency problem between prints. Load white media before performing this calibration. Perform the Line Sensor Calibration as follows: MAKE SURE THAT THE WINDOW IS CLOSED BEFORE YOU PERFORM THIS CALIBRATION. REPLACE THE LENS COVER BEFORE YOU PERFORM THIS CALIBRATION IN ORDER TO PREVENT ANY AEROSOL PROBLEMS. 1 In the Calibrations submenu, scroll to "C3 Line Sensor" and press Enter. Calibrations C3 Line Sensor 2 If media is not loaded the calibration will stop and the message "Load Media" will be displayed on the front-panel. Load media in order to continue the calibration. 3 While the Calibration is being performed, a row of "***" will be displayed on the front-panel. 4 Once the Calibration is completed, a message similar to the following is displayed on the front-panel. Green: I:8.0 O: 984 Blue: I:10.0 T:0 C:2 5-10 HP DesignJet CP Series Printers Service Calibrations