6.Ping the printer.
Pinging the printer tells you if it is "seen" on the network. If you cannot ping the printer, turn the printer off and then on. Then ping every device in the path to the printer – access points, routers, etc. Any device you cannot ping needs attention.
ping ip address (i.e. ping 192.0.0.192)
7.Verify connection to the data port by starting a Telnet session to the printer using Port 9100 (i.e. telnet aa.bb.cc.dd 9100).
Press
A@
which means the printer is online and waiting. Alternatively, you can type
{J,2}
Note: The J must be capital.
The printer responds with {J,0,0,””,””}.
No response means that the printer may have an open session to some other connection. Either terminate the other connection or turn off the printer and turn it back on.