General Troubleshooting The printer has problems ejecting sheet media The printer has problems ejecting sheet media, either continuing to eject the paper long after it has been ejected or stopping the ejecting process before the paper is completely ejected from the printer. To solve the problem, try the following: „ Load media using the skew check feature whenever it is possible. When sheet media is loaded without the skew check feature, the printer estimates the length of the paper to be 4 times the width. If this estimate is either too short or too long, the printer will not properly eject the media.
Banding at variable extreme environmental conditions Since the Accuracy Calibration has been done at normal environmental conditions, printing in extreme environmental conditions will cause banding because the advance of the Media Advance Roller does not correspond to the conditions present when the calibration was performed. To solve the problem, try the following: „ Perform the Accuracy Calibration in the new environmental conditions (Refer to the User’s Guide). Worm marks on HP Coated media with light area fills Light bands (S-shaped) in Paper axis direction where light area fills are printed, causing unacceptable Image Quality defect.
„ Print the Service Configuration Print and check if the level of Humidity is very low (below 30%). Increasing humidity may help in reducing the severity of the problem. The media is causing the problem and NOT the Printer. Do not attempt to try and replace Printer parts to solve this problem. Solving Media-Handling Problems The Front Panel indicates that media is misaligned or incorrectly positioned Roll media „ The roll may be loaded the wrong way. The paper should load over the roll toward you. „ Check that the paper is correctly loaded onto the spindle. „ The paper may be loaded at an angle. The right-hand edge must be aligned with the blue line on the Print Platen.
Ensure that the paper is wrapped tightly on the roll. This is a very important step to remember because if this is not done, the media may be loaded at an angle, causing the media to be rejected. „ Make sure you choose the correct loading option on the Front Panel. Designjet Z Series — Service Manual 1-8