Huawei Technologies Proprietary 
87 
6  Troubleshooting Guide 
6.1  Quick Troubleshooting 
Failures  Instructions 
Power light 
is out. 
1.  Ensure power adapter is well connected. 
2.  Ensure the right power adapter is used. 
ADSL 
LINK light 
is out. 
1.  Ensure the ADSL line is well connected. 
2.  Ensure the telephone line before entering the 
house is valid, and try to test with a telephone. 
3.  Check that there is no junction box before 
connecting MT882, which has such components 
like capacitors or diodes that could hinder back 
high frequency signals. 
4.  Ensure the MT882 and telephones are 
connected in the right way. 
LAN LINK 
light is out. 
1.  Ensure you use the right cables from the MT882 
to your PC. 
2.  Ensure the connection is secured. 
3.  Check if the NIC LED lights up. 
4.  Ensure your Network Adapter works normally by 
examining whether the item of “Networking 
Adapters” is labeled with “?” or “!”. If it is, you 
may delete it and then click “Refresh” to reinstall. 
Otherwise, you may try the NIC in another slot. 
As a last resort, you have to replace the NIC.