3Com DSA-3CV1100-02 service manual Using Front Panel, LEDs to Solve, Problems, Indicator LEDs

126TROUBLESHOOTING

The normal VCN AC port status are presented in Table 15.

Table 15 Normal VCN AC Port Status

	LAN State	Line State	Power State
If a port is connected	Green	Green	Green
If a port is not connected	Off	Off	Off

Using Front Panel	Refer to “Real Time LED Indications”, page 16, for a description of the
LEDs to Solve	indicator LEDs.
Problems	Use the front panel LEDs to determine the status of a VCN AC port after
	POST.
	Table 16 VCN AC Port LED Indications following POST
	Problem	Solution

The port power LED remains Off after power connection

Check the main power cable connections. Plug in the power cable if necessary.

The power LED	A hardware fault has been detected at this port.
remains orange for	Power the VCN AC off and then on. If the problem persists,
longer than 30
	contact your supplier.
seconds.
The LINE LED is not	Check the line connection. If the line connections are
green	appropriate, the local modem is not functioning.
	Power the VCN AC off and than on. If the problem persists,
	contact your supplier.
The LAN LED is off	Check the Ethernet cable. The problem could be in the VCN
	AC or in the Ethernet Switch.
	1	Check that the RJ-45 cable between the VCN AC and the
		Ethernet Switch is connected.
	2	If the Ethernet LED is still off, replace the RJ-45 cable.
	3	If after the cable has been replaced, the VCN AC Ethernet
		LED is still off, use an alternative port.
	4	If, after the cable has been replaced, the Ethernet Switch
		Ethernet LED is off, use an alternative port on the switch.
	5	If the problem persists, contact your supplier.