HP DesignJet T7200 Using Your Printer - Page 64
Image Quality Maintenance menu procedure, Scanning errors during alignment
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NOTE: The printer prints a calibration image. Do not worry about the image. The front-panel display shows any errors in the process. Image Quality Maintenance menu procedure 1. Load the paper you wish to use, see Handle the paper on page 21. It should be at least 457.2 mm (18 in) wide. CAUTION: Do not use transparent or semi-transparent paper to align the printheads. 2. From the front panel, select the Image Quality Maintenance menu icon printer checks to see if it has enough paper to run the realignment. , then Align printheads. The 3. If the loaded paper is satisfactory, the printer runs the realignment and prints a realignment pattern. Ensure the window is closed, as a strong light source near the printer during printhead realignment can affect alignment. 4. The process takes about five minutes. Wait until the front-panel display shows the process complete before using the printer. Scanning errors during alignment If the alignment process fails, a Scanning problems message appears on the front panel. This means that the alignment has not completed successfully. Therefore the printer is not aligned and the alignment should be repeated before printing with good image quality. Possible reasons for failure: ● The paper used was not acceptable; repeat the alignment with a different paper type. ● The printheads are not clean; see Clean (recover) the printheads on page 51. ● The window was open; repeat the alignment with the window closed. If the problem persists after correcting these potential problems, there may be a failure in the scanning system requiring repair, or the printheads may need to be replaced. The Image Diagnostics Print The Image Diagnostics Print consists of patterns designed to highlight printhead reliability problems. It helps you to check the performance of the printheads that are currently installed in your printer, and whether any printhead suffers from clogging or other problems. To print the Image Diagnostics Print: 1. Use the same paper type that you were using when you detected a problem. 2. Use the View information key on the front panel to check that the selected paper type is the same as the paper type loaded into the printer. 3. At the printer's front panel, select the Image Quality Maintenance menu icon image. , then Print diagnostic It takes about two minutes to print the Image Diagnostics Print. The print is divided into two parts, both of which test printhead performance. 56 Chapter 5 Handle the ink system ENWW