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Introduction ...................................................................................................................................................... 134
Check the scanner glass for dirt and smudges .......................................................................................... 134
Eliminate lines or streaks when using the document feeder .................................................................. 135
Check the paper settings ............................................................................................................................... 135
Check the image adjustment settings ......................................................................................................... 135
Optimize for text or pictures ......................................................................................................................... 136
Check the scanner resolution and color settings on the computer ........................................................ 136
Resolution and color guidelines ............................................................................................... 136
Color .............................................................................................................................................. 137
Edge-to-edge copying .................................................................................................................................... 137
Clean the pickup rollers and separation pad in the document feeder .................................................... 138
Improve fax image quality .................................................................................................................................................. 139
Introduction ...................................................................................................................................................... 139
Check the scanner glass for dirt and smudges .......................................................................................... 139
Check the send-fax resolution settings ....................................................................................................... 140
Check the error-correction settings ............................................................................................................. 140
Check the t-to-page setting ........................................................................................................................ 140
Clean the pickup rollers and separation pad in the document feeder .................................................... 141
Send to a dierent fax machine .................................................................................................................... 142
Check the sender's fax machine ................................................................................................................... 142
Solve wired network problems .......................................................................................................................................... 143
Introduction ...................................................................................................................................................... 143
Poor physical connection ............................................................................................................................... 143
The computer is using the incorrect IP address for the printer ............................................................... 143
The computer is unable to communicate with the printer ....................................................................... 144
The printer is using incorrect link and duplex settings for the network ................................................. 144
New software programs might be causing compatibility problems ....................................................... 144
The computer or workstation might be set up incorrectly ....................................................................... 144
The printer is disabled, or other network settings are incorrect ............................................................. 144
Solve wireless network problems ..................................................................................................................................... 145
Introduction ...................................................................................................................................................... 145
Wireless connectivity checklist ...................................................................................................................... 145
The printer does not print after the wireless conguration completes .................................................. 146
The printer does not print, and the computer has a third-party rewall installed ............................... 146
The wireless connection does not work after moving the wireless router or printer .......................... 146
Cannot connect more computers to the wireless printer ......................................................................... 146
The wireless printer loses communication when connected to a VPN ................................................... 147
The network does not appear in the wireless networks list .................................................................... 147
The wireless network is not functioning ..................................................................................................... 147
Perform a wireless network diagnostic test ............................................................................................... 147
Reduce interference on a wireless network ................................................................................................ 147
viii ENWW
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