Lexmark MX421 Users Guide PDF - Page 202
Solid black s, Step 1
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Troubleshooting 202 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. Using the Print Quality Test Pages, check if the distance between the repeating defects is equal to any of the following: • 97 mm (3.82 in.) • 47 mm (1.85 in.) • 38 mm (1.5 in.) No Take note of the distance, and then contact customer support. Does the distance between the repeating defects match any of the measurements? Step 2 a Replace the imaging unit. b Print the document. Contact customer support. The problem is solved. Do the repeating defects appear? Solid black pages 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 toner cartridge is not supported, then install a supported one. b Print the document. No The problem is solved. Is the printer printing solid black pages?