ZyXEL Communications P-870HW-I User Manual

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P-870HW-I1 User’s Guide
Chapter 39 Troubleshooting
351
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H A P T E R
39
Troubleshooting
This chapter covers potential problems and the corresponding remedies.
39.1  Problems Starting Up the ZyXEL Device
The following table identifies some remedies if you have problems starting up the ZyXEL 
Device.
39.2  Problems with the LAN
The following table identifies some remedies if you have problems with the LAN connections.
Table 164   Troubleshooting Starting Up Your ZyXEL Device
PROBLEM
CORRECTIVE ACTION
None of the 
lights turn on 
when I turn on 
the ZyXEL 
Device.
Make sure that the ZyXEL Device’s power adaptor is connected to the ZyXEL Device 
and plugged in to an appropriate power source. Make sure that the ZyXEL Device and 
the power source are both turned on.
Turn the ZyXEL Device off and on.
If the error persists, you may have a hardware problem. In this case, you should 
contact your vendor.
Table 165   Troubleshooting the LAN
PROBLEM
CORRECTIVE ACTION
The LAN lights 
do not turn on.
Check your Ethernet cable connections (see the Quick Start Guide for details). 
Check for faulty Ethernet cables.
Make sure your computer’s Ethernet card is working properly.
I cannot access 
the ZyXEL 
Device from the 
LAN. 
Make sure that the IP address and the subnet mask of the ZyXEL Device and your 
computer(s) are on the same subnet. See the appendices for information how to do 
this.