4. Troubleshooting► Error CodeS6–3123S6–3128S6–3229S6–322A► Error messageThis IP address conflicts with that of other system. Check it.802.1x authentication failed. Please Contact the System Administrator.The IPv4 address assigned to wireless LAN conflicts with that of other system. Check it.The IPv6 address assigned to wireless LAN conflicts with that of other system. Check it.► SymptomNetwork error. (IP address conflicts with that of another system. / Communication error / There is no response whenchecking the ping test.)► Troubleshooting method• Change the machine’s IP address.1) Select “Machine Setup” on the touch screen.2) Select “Networking Setting”.3) “Log-In”.4) Select “TCP/IP”.5) Select the proper item for your machine.6) Select “IP Setting”.7) Select the proper item for your machine.8) Change the IP address.Copyright© 1995-2016 SAMSUNG. All rights reserved. 4-182