Lexmark C935 manual Troubleshooting

Using Secure mode	146
Troubleshooting	148
Checking an unresponsive printer	148
Door A will not shut properly	148
Solving printing problems	149
Multiple-language PDFs do not print	149
Control panel display is blank or displays only diamonds	149
Error message about reading USB drive appears	149
Jobs do not print	149
Confidential and other held jobs do not print	150
Job takes longer than expected to print	150
Job prints from the wrong tray or on the wrong paper	151
Incorrect characters print	151
Tray linking does not work	151
Large jobs do not collate	151
Unexpected page breaks occur	151
Solving option problems	152
Option does not operate correctly or quits after it is installed	152
Drawers	152
Finisher	153
Flash memory card	153
Hard disk with adapter	153
Internal print server	153
Memory card	153
USB/parallel interface card	153
Solving paper feed problems	153
Paper frequently jams	153
Print jobs are not routed to the booklet-maker bin	154
Paper jam message remains after jam is cleared	154
Page that jammed does not reprint after you clear the jam	154
Solving print quality problems	155
Isolating print quality problems	155
Blank pages	155
Characters have jagged or uneven edges	156
Clipped images	156
Dark lines	156
Gray background	156
Incorrect margins	157
Light colored line, white line, or incorrectly colored line	157
Paper curl	157
Print irregularities	158
Print is too dark	158
Print is too light	159
Repeating defects	160
Skewed print	160

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