HP LaserJet Pro MFP M426, M427 - User Guide

Clear paper jams in the document feeder ................................................................................................... 128
Clear paper jams in Tray 1 ............................................................................................................................. 131
Clear paper jams in Tray 2 ............................................................................................................................. 132
Clear paper jams in Tray 3 ............................................................................................................................. 136
Clear paper jams in the fuser ........................................................................................................................ 140
Clear paper jams in the output bin ............................................................................................................... 143
Clear paper jams in the duplexer .................................................................................................................. 146
Improve print quality ........................................................................................................................................................... 148
Introduction ...................................................................................................................................................... 148
Print from a dierent software program .................................................................................................... 148
Check the paper-type setting for the print job ........................................................................................... 148
Check the paper type setting (Windows) ................................................................................ 148
Check the paper type setting (OS X) ........................................................................................ 148
Check toner-cartridge status ........................................................................................................................ 149
Clean the printer .............................................................................................................................................. 150
Print a cleaning page .................................................................................................................. 150
Check the scanner glass for dirt and smudges ..................................................................... 150
Visually inspect the toner cartridge ............................................................................................................. 150
Check paper and the printing environment ................................................................................................ 151
Step one: Use paper that meets HP specications ............................................................... 151
Step two: Check the environment ............................................................................................ 151
Step three: Set the individual tray alignment ........................................................................ 151
Check the EconoMode settings ..................................................................................................................... 152
Try a dierent print driver .............................................................................................................................. 152
Improve copy and scan image quality .............................................................................................................................. 154
Introduction ...................................................................................................................................................... 154
Check the scanner glass for dirt and smudges .......................................................................................... 154
Check the paper settings ............................................................................................................................... 154
Check the image adjustment settings ......................................................................................................... 155
Optimize for text or pictures ......................................................................................................................... 155
Edge-to-edge copying .................................................................................................................................... 155
Clean the pickup rollers and separation pad in the document feeder .................................................... 156
Improve fax image quality .................................................................................................................................................. 157
Introduction ...................................................................................................................................................... 157
Check the scanner glass for dirt and smudges .......................................................................................... 157
Check the send-fax resolution settings ....................................................................................................... 158
Check the error-correction settings ............................................................................................................. 158
Check the t-to-page setting ........................................................................................................................ 158
Clean the pickup rollers and separation pad in the document feeder .................................................... 158
Send to a dierent fax machine .................................................................................................................... 160
Check the sender's fax machine ................................................................................................................... 160
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