Lexmark MX421 User Manual page 6

Contents
Paper jam in the automatic document feeder..........................................................................................193
Troubleshooting........................................................................................ 195
Print quality problems.....................................................................................................................................195
Printing problems.............................................................................................................................................196
Network connection problems....................................................................................................................224
Hardware options problems........................................................................................................................ 227
Issues with supplies....................................................................................................................................... 229
Paper feed problems..................................................................................................................................... 230
E-mailing problems.........................................................................................................................................233
Faxing problems..............................................................................................................................................234
Scanning problems.........................................................................................................................................239
Contacting customer support......................................................................................................................246
Upgrading and migrating........................................................................ 247
Hardware...........................................................................................................................................................247
Software............................................................................................................................................................. 261
Firmware........................................................................................................................................................... 263
Notices.......................................................................................................266
Index...........................................................................................................284
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