Lexmark T652 Service Manual - Page 197

4062 Vertical lines and bands (process direction) Leading edge Trailing edge Step 1 Check Check the media condition. Load new, dry, recommended media. Re-print the defective image. Does the error continue? Yes Go to step 2. No Problem solved. 2 3 Is the media transfer route and the media path clear of debris? Check the laser beam route. Check for debris between the printhead assembly and the PC drum. Is the laser beam route free of debris and the glass window, in the printhead assembly, free of contamination? Go to step 3. Go to step 4. Remove debris or contamination. Remove debris or clean the printhead assembly window. 4 Check the print cartridge for proper installation. Is the above component properly installed? Go to step 5. Inspect, clean and reinstall replace the print cartridge. Replace the transfer roll assembly. Go to "Transfer roll assembly removal (T650, T652, T654)" on page 4-78. 5 Check the transfer roll assembly for contamination and wear. Is the above component free of excess wear and contamination? Go to step 6. 6 Check the printhead assembly for proper connection. Is the above component properly connected? Replace the printhead assembly. Go to "Printhead assembly removal (T650)" on page 4-60 or "Printhead assembly removal (T652, T654)" on page 4-61. Replace the connections. Diagnostic information 2-163