Sharp FO-IS115N Operation Manual page 37

If the machine is unable to communicate...
♦
Check the Ethernet cable. Are the connections secure? Are you using
straight-through (not crossover) cable for 10Base-T/100Base-TX?
♦
There may be a problem in the router or other device to which the machine
is connected. Try removing and then restoring the power to the router (see
the manual for the router).
♦
If [IP ADDRESS/DHCP: FAIL] appears, remove and then reinsert the
Ethernet cable plug, and then check the IP address again. If the same
message appears, check the device that acts as the DHCP server on your
network (try removing and restoring the power). If your router is your DHCP
server, make sure that DHCP is enabled in the router settings. If your
network does not have a DHCP server, set a static IP address as explained
on page 48.
♦
If a static IP address has been set, make sure that the network settings
(page 48) are correct .
Setting up Network Scanning
33