2-156 Service ManualVertical lines and bands (process direction)Step Check Yes No1 Check the media condition.Load new, dry, recommended media.Re-print the defective image.Does the error continue?Go to step 2. Problem solved.2 Is the media transfer route and the media path clear ofdebris? Go to step 3. Remove debris orcontamination.3 Check the laser beam route.Check for debris between the printhead assembly and thePC drum.Is the laser beam route free of debris and the glasswindow, in the printhead assembly, free of contamination?Go to step 4. Remove debris orclean theprintheadassembly window.4 Check the print cartridge for proper installation.Is the above component properly installed?Go to step 5. Inspect, clean andreinstall replacethe print cartridge.5 Check the transfer roll assembly for contamination andwear.Is the above component free of excess wear andcontamination?Go to step 6. Replace thetransfer rollassembly.Go to “Transferroll assemblyremoval” onpage 4-80.6 Check the printhead assembly for proper connection.Is the above component properly connected?Replace theprintheadassembly.Go to “Printheadassembly“PrintheadassemblyReplace theconnections.7 Perform a print test.Does the problem remain?Contact nexthighest level oftech support.Problem solved.Leading edgeTrailing edgeremoval (5350dn,removal(5230n/dn)” onpage 4-60 or5530dn, andT656)” onpage 4-61.
