ZyXEL Communications NBG420N User Manual
NBG420N User’s Guide
265
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H A P T E R
26
Troubleshooting
This chapter offers some suggestions to solve problems you might encounter. The potential
problems are divided into the following categories.
problems are divided into the following categories.
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26.1 Power, Hardware Connections, and LEDs
V
The NBG420N does not turn on. None of the LEDs turn on.
1 Make sure you are using the power adaptor or cord included with the NBG420N.
2 Make sure the power adaptor or cord is connected to the NBG420N and plugged in to an
2 Make sure the power adaptor or cord is connected to the NBG420N and plugged in to an
appropriate power source. Make sure the power source is turned on.
3 Disconnect and re-connect the power adaptor or cord to the NBG420N.
4 If the problem continues, contact the vendor.
4 If the problem continues, contact the vendor.
V
One of the LEDs does not behave as expected.
1 Make sure you understand the normal behavior of the LED. See
.
2 Check the hardware connections. See the Quick Start Guide.
3 Inspect your cables for damage. Contact the vendor to replace any damaged cables.
4 Disconnect and re-connect the power adaptor to the NBG420N.
5 If the problem continues, contact the vendor.
3 Inspect your cables for damage. Contact the vendor to replace any damaged cables.
4 Disconnect and re-connect the power adaptor to the NBG420N.
5 If the problem continues, contact the vendor.