AX/DX/EX/PX Series User’s Guide
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CHAPTER 45
Troubleshooting
45.1 Troubleshooting Overview
This chapter offers some suggestions to solve problems you might encounter. The potential problems are
divided into the following categories.
• Power and Hardware Problems
• Device Access Problems
• Internet Problems
• WiFi Problems
• USB Problems
• VoIP Problems
• UPnP Problems
45.2 Power and Hardware Problems
The Zyxel Device does not turn on.
1 Make sure you are using the power adapter included with the Zyxel Device.
2 Make sure the power adapter is connected to the Zyxel Device and plugged in to an appropriate
power source. Make sure the power source is turned on.
3 Disconnect and re-connect the power adapter to the Zyxel Device.
4 Make sure you have pressed the POWER button to turn on the Zyxel Device.
5 If the problem continues, contact the vendor.
The LED does not behave as expected.
1 Make sure you understand the normal behavior of the LED.
2 Check the hardware connections.