HP Color LaserJet Pro MFP M178-M181 - User Guide

Print and interpret the print quality page ................................................................................................... 114
Resolving print quality problems ...................................................................................................................................... 116
Introduction ...................................................................................................................................................... 116
Troubleshoot print quality problems ........................................................................................................... 116
Improve copy and scan image quality .............................................................................................................................. 124
Introduction ...................................................................................................................................................... 124
Check the scanner glass for dirt and smudges .......................................................................................... 124
Eliminate lines or streaks when using the document feeder .................................................................. 125
Check the paper settings ............................................................................................................................... 125
Check the image adjustment settings ......................................................................................................... 126
Optimize for text or pictures ......................................................................................................................... 128
Check the scanner resolution and color settings on the computer ........................................................ 129
Resolution and color guidelines ............................................................................................... 129
Color .............................................................................................................................................. 130
Edge-to-edge copying .................................................................................................................................... 130
Clean the pickup rollers and separation pad in the document feeder (fw models only) .................... 131
Improve fax image quality .................................................................................................................................................. 132
Introduction ...................................................................................................................................................... 132
Check the scanner glass for dirt and smudges .......................................................................................... 132
Check the send-fax resolution settings ....................................................................................................... 132
Check the error-correction settings ............................................................................................................. 133
Check the t-to-page setting ........................................................................................................................ 133
Send to a dierent fax machine .................................................................................................................... 133
Check the sender's fax machine ................................................................................................................... 133
Solve wired network problems .......................................................................................................................................... 134
Introduction ...................................................................................................................................................... 134
Poor physical connection ............................................................................................................................... 134
The computer is unable to communicate with the printer ....................................................................... 134
The printer is using incorrect link and duplex settings for the network ................................................ 135
New software programs might be causing compatibility problems ...................................................... 135
The computer or workstation might be set up incorrectly ...................................................................... 135
The printer is disabled, or other network settings are incorrect ............................................................. 135
Solve wireless network problems (wireless models only) ............................................................................................ 136
Introduction ...................................................................................................................................................... 136
Wireless connectivity checklist ..................................................................................................................... 136
The printer does not print after the wireless conguration completes ................................................. 137
The printer does not print, and the computer has a third-party rewall installed ............................... 137
The wireless connection does not work after moving the wireless router or printer .......................... 137
Cannot connect more computers to the wireless printer ........................................................................ 137
The wireless printer loses communication when connected to a VPN .................................................. 138
The network does not appear in the wireless networks list .................................................................... 138
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