Lexmark CX920 User Guide - Page 154
Vertical white lines
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Troubleshooting 154 Action Step 4 a Clean the printhead lens. b Print the document. Yes Go to step 5. No The problem is solved. Do vertical dark lines or streaks still appear on prints? Step 5 a Inspect the test pages to determine which color is affected. b Replace the photoconductor unit. c Print the document. Contact customer support. The problem is solved. Do vertical dark lines or streaks still appear on prints? Vertical white lines Leading edge 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 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 white lines still appear on prints? Step 2 Go to step 3. Check if you are using the recommended paper type. a Load the specified tray or feeder with the recommended paper type. b Print the document. The problem is solved. Do vertical white lines still appear on prints?