Lexmark XM7355 Users Guide PDF - Page 231
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Troubleshooting 231 Action Yes a Check if the printer is using a genuine and supported Lexmark Contact customer toner cartridge. support. Note: If the cartridge is not supported, then install a supported one. b Print the document. No The problem is solved. Do vertical light bands appear on prints? Vertical white lines Note: Before solving the problem, print the Print Quality Test Pages. From the control panel, navigate to Settings > Troubleshooting > Print Quality Test Pages. For non‑touch‑screen printer models, press to navigate through the settings. Action Yes Step 1 Go to step 2. a Check if the printer is using a genuine and supported Lexmark toner cartridge. Note: If the cartridge is not supported, then install a supported one. b Print the document. No The problem is solved. Do vertical white lines appear on prints? Step 2 Fix slow printing problems. For more information, see "Slow printing" on page 238. Go to step 3. The problem is solved. Do vertical white lines appear on prints? Step 3 a Replace the imaging unit. b Print the document. Contact customer The problem is support. solved. Do vertical white lines appear on prints?