TROUBLESHOOTING 11 - 3- Page 120

TROUBLESHOOTING 11 - 3

YL4US_FAX2800MFC4800-FM5.5

3

If you cannot make any of the connections in step 2, check the 
following:

a

Make sure the printer is powered on and on-line.

b

Check the cabling, network connection, and print out a 
configuration page in the Network STATISTICS information to 
see if bytes are being transmitted and received.

c

Check to see if there is any LED activity.

The NC-5100h print server has two LEDs on the back panel of 
the printer. The upper side LED shows Link/Speed status. The 
lower side LED shows Activity (Receive/Transmit) status.

■

No light:
If the both of two LEDs are off, then the print server is not 
connected to the network.

■

Link/Speed LED is orange: Fast Ethernet
The Link/Speed LED will be orange if the print server is 
connected to a 100BaseTX Fast Ethernet network.

■

Link/Speed LED is green: 10BaseT Ethernet
The Link/Speed LED will blink if the print server is receiving or 
transmitting data.

4

If you are using a repeater or hub, make sure that SQE 
(heartbeat) is turned off at the hub (if applicable). Also, if you 
have a hub or multi-port repeater, verify that the hub or repeater 
port is good by trying the print server on a different port or on the 
other hub or multi-port repeater.

5

If you have a bridge or router located between the print server 
and host computer, make sure that the device is set up to allow 
the print server to send and receive data from the host. For 
example, a bridge can be set up to only allow certain types of 
Ethernet addresses to pass through (a process known as 
filtering); therefore, such a bridge must be configured to allow 
Brother print server addresses. Likewise, a router can be set up 
to pass only certain protocols, so be sure that the desired 
protocol can be passed through to the print server.