HP LaserJet Pro MFP M28-M31 User Guide - Page 8

Check the paper-type setting for the print job 74 Check the paper type setting on the printer 74 Check the paper type setting (Windows 74 Check the paper type setting (OS X 74 Check toner-cartridge status ...74 Cartridge cleaning ...75 Print a cleaning page ...76 Visually inspect the toner cartridge ...76 Check paper and the printing environment 76 Step one: Use paper that meets HP specifications 76 Step two: Check the environment 77 Adjust Print Density ...77 Resolving print quality problems ...79 Introduction ...79 Troubleshoot print quality problems ...79 Improve copy and scan image quality ...87 Introduction ...87 Check the scanner glass for dirt and smudges 87 Check the paper settings ...87 Optimize for text or pictures ...89 Edge-to-edge copying ...89 Solve wireless network problems ...90 Introduction ...90 Wireless connectivity checklist ...90 The printer does not print after the wireless configuration completes 91 The printer does not print, and the computer has a third-party firewall installed 91 The wireless connection does not work after moving the wireless router or printer 91 Cannot connect more computers to the wireless printer 91 The wireless printer loses communication when connected to a VPN 92 The network does not appear in the wireless networks list 92 The wireless network is not functioning ...92 Perform a wireless network diagnostic test 92 Reduce interference on a wireless network 93 Index ...95 vi ENWW