Lexmark XC9235 User Guide - Page 157
Vertical dark lines or streaks
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Troubleshooting 157 Vertical dark lines or streaks Leading edge ABCDE ABCDE ABCDE Trailing edge Note: Before solving the problem, print the print quality test pages. From the home screen, touch Settings > Troubleshooting > Print Quality Test Pages. Action Yes Step 1 Go to step 2. a Depending on your operating system, specify the paper type, texture, and weight from the Printing Preferences or Print dialog. Notes: • Make sure that the settings match the paper loaded in the tray. • You can also change the settings on the printer control panel. b Print the document. No The problem is solved. Do vertical dark lines or streaks still appear on prints? Step 2 a Load paper from a fresh package. Note: Paper absorbs moisture due to high humidity. Store paper in its original wrapper until you use it. b Print the document. Go to step 3. The problem is solved. Do vertical dark lines or streaks still appear on prints? Step 3 a Inspect the test pages to determine which color is affected. b Remove, and then reinstall the photoconductor unit. Warning-Potential Damage: Do not expose the photoconductor unit to direct light for more than one minute. Extended exposure to light can cause print quality problems. Warning-Potential Damage: Do not touch the photoconductor drum. Doing so may affect the quality of future print jobs. c Print the document. Go to step 4. The problem is solved. Do vertical dark lines or streaks still appear on prints?