HP Designjet 2800/3800cp Service Manual - Page 157
Example D, Alignment Problem, Corrective Action, step 1, Perform the Printhead Alignment Calibration
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Horizontal Misalignment Vertical Misalignment Correct Incorrect Correct Example D Incorrect Alignment Problem: Corrective Action: Third color present/misalignment in either the boxes or circles of the test image (see Example D). Try the following steps: 1 Perform the Printhead Alignment Calibration (Details ' page 5-13) using genuine HP media then print the Image Quality Print again to see if there has been any improvement. 2 If there has been no improvement, try reinstalling the Ink System Components and try step 1 again. 3 If the Image Quality Print still has problems then replace the Line Sensor ' page NO TAG 4 If the problem continues perform the Service Accuracy Calibration (Details ' page 5-17) and print the Image Quality Print again to see if there has been any improvement. 5 If the error continues try the following: D Perform the Electronics Test ' page 4-7. D Replace the Trailing Cable ' page 8-36. D Replace the Carriage Assembly ' page 8-42. D Replace the X-axis Assembly ' page 8-66. Print Quality HP DesignJet CP Series Printers 6-15