User's Manual

NBG410W3G Series User’s Guide
339
CHAPTER 21
Troubleshooting
This chapter offers some suggestions to solve problems you might encounter. The potential
problems are divided into the following categories.
• Power, Hardware Connections, and LEDs
• ZyXEL Device Access and Login
• Internet Access
• 3G Connection
21.1 Power, Hardware Connections, and LEDs
V The ZyXEL Device does not turn on. None of the LEDs turn on.
1 Make sure the ZyXEL Device is turned on.
2 Make sure you are using the power adaptor or cord included with the ZyXEL Device.
3 Make sure the power adaptor is connected to the ZyXEL Device and plugged in to an
appropriate power source. Make sure the power source is turned on.
4 Turn the ZyXEL Device off and on or disconnect and re-connect the power adaptor to
the ZyXEL Device.
5 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 Section 1.5.1 on page
39.
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 Turn the ZyXEL Device off and on or disconnect and re-connect the power adaptor to
the ZyXEL Device.
5 If the problem continues, contact the vendor.