Introduction ...................................................................................................................................................... 162
Check the scanner glass for dirt and smudges .......................................................................................... 162
Check the paper settings ............................................................................................................................... 163
Check the image adjustment settings ......................................................................................................... 163
Optimize for text or pictures ......................................................................................................................... 163
Check the scanner resolution and color settings on the computer ........................................................ 164
Resolution and color guidelines ............................................................................................... 164
Color .............................................................................................................................................. 165
Edge-to-edge copying .................................................................................................................................... 165
Clean the pickup rollers and separation pad in the document feeder .................................................... 165
Improve fax image quality .................................................................................................................................................. 167
Introduction ...................................................................................................................................................... 167
Check the scanner glass for dirt and smudges .......................................................................................... 167
Check the send-fax resolution settings ....................................................................................................... 168
Check the Error Correction Mode setting .................................................................................................... 168
Send to a dierent fax machine .................................................................................................................... 168
Check the sender's fax machine ................................................................................................................... 168
Solve wired network problems .......................................................................................................................................... 169
Introduction ...................................................................................................................................................... 169
Poor physical connection ............................................................................................................................... 169
The computer is using the incorrect IP address for the printer ............................................................... 169
The computer is unable to communicate with the printer ....................................................................... 169
The printer is using incorrect link and duplex settings for the network ................................................. 170
New software programs might be causing compatibility problems ....................................................... 170
The computer or workstation might be set up incorrectly ....................................................................... 170
The printer is disabled, or other network settings are incorrect ............................................................. 170
Solve wireless network problems ..................................................................................................................................... 171
Introduction ...................................................................................................................................................... 171
Wireless connectivity checklist ...................................................................................................................... 171
The printer does not print after the wireless conguration completes .................................................. 172
The printer does not print, and the computer has a third-party rewall installed ............................... 172
The wireless connection does not work after moving the wireless router or printer .......................... 172
Cannot connect more computers to the wireless printer ......................................................................... 173
The wireless printer loses communication when connected to a VPN ................................................... 173
The network does not appear in the wireless networks list .................................................................... 173
The wireless network is not functioning ..................................................................................................... 173
Perform a wireless network diagnostic test ............................................................................................... 174
Reduce interference on a wireless network ................................................................................................ 174
Solve fax problems .............................................................................................................................................................. 175
Introduction ...................................................................................................................................................... 175
Fax troubleshooting checklist ....................................................................................................................... 175
ENWW ix
