ZyXEL Communications PLA470 V2 ユーザーズマニュアル

 Chapter 7 LEDs and Troubleshooting

PLA-4xx Series User’s Guide

4 If the PLA-4xx is connected to an Ethernet switch or router, make sure the device is 

working correctly, and that the LAN network is working and configured correctly as 
well. 

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The HomePlug light does not turn on.

1 Check all PLA-4xxs on your network have the latest firmware installed. PLA-4xxs with 

the latest firmware cannot communicate with PLA-4xxs using earlier versions of the 
firmware. Go to 

 for instructions on installing the latest firmware.

2 Use the PLA-4xx Series Configuration Utility to detect all other HomePlug devices on 

your powerline network. Make sure that the network name (sometimes called the 
network password) is the same on all of your powerline adapters. See 

 for instructions on checking the network name. 

3 Check the DAK password and MAC address for all powerline adapters are typed 

correctly in the utility. See 

 for instructions on checking the DAK 

and MAC address.

4 Make sure that all your powerline adapters are HomePlug AV compliant. Check the 

package it came in or ask your vendor. This PLA-4xx can not detect earlier versions of 
HomePlug powerline adapters such as HomePlug 1.0 or 1.0.1. (Although they can 
coexist on the same electrical wiring without interfering with each other.)

5 Make sure that the powerline adapters on your network are all on the same electrical 

wiring. Connect another powerline adapter into an outlet close to your PLA-4xx’s power 
outlet. They are probably now on the same electrical wiring. Check the HomePlug 

 

light. If it now lights up your powerline adapter was probably previously on separate 
electrical wiring. Ask an electrician for more information on the electrical wiring in your 
building.

6 If your powerline network is using coaxial cable, check all powerline adapters are on the 

same coaxial cable. 

7 If your powerline network is using electrical wiring (not coaxial cable), check you do not 

have a power meter between powerline adapters. Powerline signals cannot pass this.

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The POWER and HomePlug light blink at the same time.

• You have pressed the ENCRYPT button for more than three seconds. Try setting up a 

connection again, this time pressing the ENCRYPT buttons on both devices for less than 
three seconds.