User's Manual

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Appendix A: Troubleshooting
Diagnosing Gateway Indicators
Gateway operation is easily monitored via the LED indicators to identify problems. The
table below describes common problems you may encounter and possible solutions. If
the solutions in the table fail to resolve the problem, contact technical support for
advice.
Table A-1 Troubleshooting Chart
Symptom Cause Solution
PWR
indicator does not
light up after power
on.
Power outlet, power
cord, or external
power adapter may be
defective.
• Check the power outlet by plugging in another
device that is functioning properly.
• Check the power adapter with another Gateway.
LAN
link indicator does
not light up after
making a connection.
Network interface
(e.g., a network
adapter card in the
attached computer),
network cable, or
Gateway LAN port
may be defective.
• Verify that the Gateway and computer are
powered on.
• Be sure the cable is plugged into both the
Gateway and the computer.
• Verify that the proper cable type is used and its
length does not exceed specified limits.
• Check the network adapter in the computer and
cable connections for possible defects. Replace
the defective adapter or cable if necessary.
VDSL LINK
indicator is off or
does not stop
flashing (i.e.,
synchronizing) after
making a connection.
VDSL switch, cabling,
or Gateway VDSL
port may be defective.
• Verify that the Gateway and attached VDSL
switch are powered on.
• Be sure the cable is plugged into both the
Gateway and an RJ-11 telephone jack.
• Verify that the cable length does not exceed
specified limits. (Check with your service
provider for this information.)
• Check the cable connections on the Gateway,
wall jack, punch-down block/patch panel, and
the VDSL switch for possible defects. Replace
the defective cable if necessary.
ALARM
indicator is on.
VDSL link failure Restart the Gateway. If condition is not resolved,
contact your service provider.