117Optimise the output quality on the printerMissing sectionsin lines or steppedlines'Quality check'print■ Use the 'Release' quality mode fordrawings■ Use the 'Optimise print quality'wizard to correct the problem.■ When failing printheads cause thisproblem, use the 'Replace printhead'wizard to replace the failingprintheads.Missing parts ofcharacters'Quality check'print■ Use the 'Presentation' quality mode■ Use the 'Optimise print quality'wizard to correct the problem.The individual inkdrops merge on themedia'Demo print' Coalescence occurs in the 'Check' modewhen you print on high gloss photopaper. Use the 'Release' or 'Presentation'quality modeProblems with thenozzles causedrop-out'Demo print' ■ Use the 'Optimise print quality'wizard to correct the problem.■ A defective or end-of-lifemaintenance cassette can cause thisproblem. Use the 'Replace cassette'wizard to replace the maintenancecassette (see ‘Replace themaintenance cassette’ on page 147)■ Use the 'Optimise print quality'wizard to correct the problem.ColourconsistencyproblemsN/A ■ Some types of media can discolourwith age. Check that the media isnew and that it is stored correctly.■ Remove the printer from areas ofhigh humidity.[51] Problem analysis and solutions (2 – 2)Problem Method ofanalysisSolutions
