Corrective action Troubleshooting To fix Paper Advance problems, try the following: 1. Check the Paper Advance Calibration Status. This can be done by going to Main Menu/Paper/ View Loaded Paper. At the bottom, the Front Panel displays the Paper Advance Calibration status. There are three status messages: ● DEFAULT. The paper loaded is recognized as HP paper, which is already optimized and calibrated for the printer. Do not calibrate the Paper Advance for this paper. ● RECOMMENDED. The paper loaded is not recognized as HP paper, and Paper Advance values have not been customized for this paper type. In this case, calibrate the Paper Advance from the user menu. ● OK.
This indicates that the paper loaded has been calibrated before. If the printer continues to have banding and graininess problems, calibrate the Paper Advance from the user menu. NOTE: Whenever the printer's firmware is upgraded, the paper advance calibration values will be reset to factory default. 2. To calibrate the Paper Advance from the user menu, go to Main Menu/Image Quality Maintenance/Paper Advance Calibration/ Calibrate Paper Advance. NOTE: It is very important to check that the loaded paper is the same paper type as selected in the front panel. You can check the paper type selected through the Front Panel (Main Menu/Paper menu/View loaded paper).
The wrong type of paper selected will produce an offset error in the Paper Advance. NOTE: Some paper types are not suitable for Paper Advance Calibration. Do not use colored papers or transparent materials such as translucent bond, clear film, matte film, tracing paper, or vellum. Paper Advance calibration from the user menu will only calibrate the Paper Advance for the paper type loaded in the printer at that moment. 3. If Calibrate Paper Advance has mostly solved the problem, try Adjust Paper Advance to fine tune the Paper Advance (Main Menu/Image Quality Maintenance/Paper Advance Calibration/ Adjust Paper Advance ). Select the percentage of change from -100% to 100%.
To correct light banding, decrease the percentage. To correct dark banding, increase the percentage. 4. The Paper Advance calibration from the service menu will calibrate the Paper Advance for all paper types. This action is recommended when: ● The Paper Advance calibration from the user menu does not solve the problem. ● The Paper Advance problems affect all paper types. The procedure for Paper Advance Calibration from the service menu is documented in Chapter 5, Service Calibrations. See Paper Advance Calibration on page 148 . Printhead Alignment NOTE:
To ensure you obtain meaningful results, use the same type of paper that the customer was using when they encountered the image quality problem. ENWW Print-quality troubleshooting 15