Appendix A Troubleshooting - TP-Link AC500 Installation Manual

Wireless Controller

Appendix A Troubleshooting

Q1. The Power LED is not lit
The Power LED should be lit up when the power system works normally. If the Power LED
worked abnormally, please check as follows:
1. Make sure that the power cable is connected properly, and the power contact is normal.
2. Make sure the voltage of the power supply meets the requirement of the input voltage of
the device.
Q2. The Link/Act LED is not lit when a device is connected to the corresponding
port
Please check as follows:
1. Make sure that the cable connectors are firmly plugged into the controller and the device.
2. Make sure the connected device is turned on and working well.
3. The cable must be less than 100 meters long (328 feet).
Q3. What could I do if I forgot the username and password of the device?
Furthermore, you can also restore the device to factory defaults, Please refer to 1.2
Appearance of this Installation Guide for further details. The default management address
of the device is http://192.168.0.253. All your current settings will be cleared after the
device is restored. If you have backup configuration, please import it.
Q4. Why does the PWR LED work abnormally?
The PWR LED should be lit up when the power system works normally. If the PWR LED
worked abnormally, please check as follows:
1. Make sure that the power cable is connected properly, and the power contact is normal.
2. Make sure the voltage of the power supply meets the requirement of the input voltage of
the device.
Q5. What could I do if I could not access the web-based configuration page?
You are recommended to check the following items:
1. Check every port LED on the device and make sure the cable is installed properly.
2. Try another port on the device and make sure the cable meets the requirement and works
normally.
3. Turn off the power. After a while, turn on the power again.
4. Make sure the IP address of your PC is set within the subnet of the device.
20 Appendix A Troubleshooting