HP DesignJet Z6 User Guide - Page 168
Vertical trimmer leaves marks on waste paper, Roll is loose on the spindle, Recalibrate the paper
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4. Make sure the modules are correctly attached to the bar. 5. Close the vertical trimmer window. Vertical trimmer leaves marks on waste paper In early use, the vertical trimmer may leave small marks on the pieces of paper that are cut off (to be discarded). This is not a malfunction, but it is something that you may happen to notice. Roll is loose on the spindle The roll may need to be replaced or reloaded. Ensure that you are using the right core, and use the HP DesignJet 3-in Core Adapter when needed. Recalibrate the paper advance Accurate paper advance is important to print quality because it is part of controlling the proper placement of dots on the paper. If the paper is not advanced the proper distance between printhead passes, light or dark bands appear in the print and image grain may increase. The printer is calibrated to advance correctly with all the papers appearing in the front panel. When you select the type of loaded paper, the printer adjusts the rate at which to advance the paper while printing. However, if you are not satisfied with the default calibration of your paper, you may need to recalibrate the rate at which the paper advances. See Troubleshooting print-quality issues on page 163 for steps to determine if paper advance calibration will solve your issue. You can check the paper advance calibration status of the currently loaded paper from the front panel at any time by tapping , then , then Calibration status. The status may be one of the following: ● DEFAULT: This status appears when loading any paper that has not been calibrated. HP papers in the Front Panel have been optimized by default and unless you experience image quality problems in your printed image such as banding or graininess it is not recommended to recalibrate the paper advance. ● OK: This status indicates that the loaded paper has been calibrated before. However you may need to repeat the calibration if you experience print-quality problems such as banding or graininess in your printed image. NOTE: Whenever you update the printer's firmware, the paper advance calibration values are reset to factory default, see Update the firmware on page 137. 160 Chapter 14 Troubleshooting paper issues ENWW