Troubleshooting, Chapter 4 troubleshooting – ZyXEL Communications NPS-520 User Manual
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NPS-520 User’s Guide
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C
H A P T E R
4
Troubleshooting
This chapter offers some suggestions to solve problems you might encounter.
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The NPS-520 does not turn on. None of the LEDs turn on.
1 Make sure you are using the power adaptor or cord included with the NPS-520.
2 Make sure the power adaptor or cord is connected to the NPS-520 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 NPS-520.
4 If the problem continues, contact the vendor.
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One of the LEDs does not behave as expected.
5 Check the hardware connections. See the Quick Start Guide or
.
6 Inspect your cables for damage. Contact the vendor to replace any damaged cables.
7 Disconnect and re-connect the power adaptor to the NPS-520.
8 If the problem continues, contact the vendor.
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I forgot the IP address for the NPS-520.
1 The default IP address is 192.168.1.6.
2 If you set the NPS-520 to get the IP address from a DHCP server, look up the IP address
assigned to the NPS-520 in the DHCP server.
3 If you manually changed the IP address and have forgotten it, open the ZyXEL utility
from a computer connected to the NPS-520. Check the IP address in the TCP/IP Setting
screen.
4 If this does not work, you have to reset the device to its factory defaults. See
.