Lexmark MX431 Users Guide PDF - Page 182

Troubleshoot a problem 182 Action Yes Step 2 Contact customer a Check if the printer is using a genuine and supported Lexmark support. toner cartridge. Note: If the toner cartridge is not supported, then install a supported one. b Print the document. No The problem is solved. Do vertical dark streaks with missing images appear on prints? Repeating defects 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 No Step 1 Go to step 2. Take note of the Using the Print Quality Test Pages, check if the distance Note: If the distance, and then between the repeating defects is equal to any of the following: repeating defects contact customer Imaging unit match the transfer support. • 96 mm (3.78 in.) roller or fuser measurements, then • 37.7 mm (1.48 in.) contact customer Toner cartridge support. • 43.5 mm (1.71 in.) • 37.5 mm (1.48 in.) Transfer roller • 52 mm (2.05 in.) Fuser • 79.8 mm (3.14 in.) • 62.5 mm (2.46 in.) Does the distance between the repeating defects match the toner cartridge or imaging unit measurements?