11
ONU-634HA Series User’s Guide
• You might be using the wrong power adaptor. Use the
included power adaptor only.
• If you are using the correct power adaptor, disconnect
and re-connect the power adaptor to turn on the ONU-
634HA again.
• If the
POWER
light is still not on, use a different power
outlet.
• If the problem continues, contact your local vendor.
2
The
PON
light is off.
• Check the connector on the optical cable and the
PON
port. Make sure they are clean and dust-free. Use an
air duster to clean the connectors. Do NOT use a wet
cloth to clean the connectors.
• Check the optical cable. Make sure it is not broken. If
the cable is broken, contact your service provider to
have the cable/connector replaced. Do NOT attempt to
replace the optical cable/connector yourself.
3
I cannot connect to the Internet.
• Check the port connections and the lights.
• There might be problems with the optical network set-
ting. Contact your service provider.
