HP Color LaserJet CP2020 Service Manual - Page 236
Paper, Type is, intervals on the unprinted side of
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Problem Cause Solution Marks repeatedly appear at even intervals on the printed side of the page. The device is not set to print on the type of media on which you want to print. In the printer driver, select the Paper tab and set Type is to match the type of paper on which you are printing. Print speed might be slower if you are using heavy paper. Internal parts might have toner on them. The problem typically corrects itself after a few more pages. The paper path might need cleaning. Clean the paper path. See Clean the product on page 54. The fuser might be damaged or dirty. To determine if the fuser has a problem, open HP ToolboxFX, and print the printquality diagnostics page. Clean the paper path. See Clean the product on page 54. A print cartridge might have a problem. To determine which cartridge has a problem, open HP ToolboxFX, and print the print-quality diagnostics page. Marks repeatedly appear at even intervals on the unprinted side of the page. Internal parts might have toner on them. The problem typically corrects itself after a few more pages. The paper path might need cleaning. Clean the paper path. See Clean the product on page 54. The fuser might be damaged or dirty. To determine if the fuser has a problem, open HP ToolboxFX and print the printquality diagnostics page. Clean the paper path. See Clean the product on page 54. The printed page contains misformed characters. The media might not meet HP specifications. Use a different paper, such as highquality paper that is intended for color laser printers. If characters are incorrectly formed so Verify that the problem also occurs on that they produce a wavy effect, the laser the configuration page. scanner might need service. 216 Chapter 7 Problem solve ENWW