ZyXEL Communications ZyXEL PLA-401 v3, User Manual, Page: 75 / 90

Chapter 8 LEDs and Troubleshooting
PLA-401 v3 User’s Guide
75
• Make sure your computer is using Windows XP or Windows Vista (32-bit)
operating system. At the time of writing, this is the only compatible operating
system for the configuration utility.
The PLA-4xx Series Configuration Utility does not display all or any of my devices.
• Inspect the LEDs on your PLA-401 v3 and make sure that the ETHERNET and
HomePlug LEDs are on or blinking. See Section 8.1 on page 71 for
troubleshooting LED related problems.
• Check all ZyxEL HomePlug AV devices on your network have the latest firmware
installed. The latest utility cannot communicate with PLA-401 v3s using earlier
versions of the firmware. Go to Section 5.4 on page 38 for instructions on
installing the latest firmware.
• Check you are using the latest version utility. Earlier version utilities cannot
communicate with PLA-401 v3s using the latest firmware. If you do not have the
latest utility, download it from the ZyXEL website.
• If the device is not a ZyXEL device, then the DAK and Network Name will be
greyed out.
• If you are running another tool such as the Firmware Detection Tool or
Firmware Upgrade Tool , the Utility will not detect your local device.
8.4 Powerline Problems
The signal on my powerline network is weak.
1
Your powerline adapters may be connected to electrical surge protectors. Connect
them to standard power outlets.
2
Your powerline adapters may be located close to large appliances such as
refrigerators or air-conditioners that cause interference with the powerline signal.
Move the adapters further away from such appliances to reduce interference.
3
Your powerline adapters may be placed close to electrical devices such as
electrical insect-killers which produce radio waves. These may interfere with the
powerline signals. Move the adapters further away from such electrical devices.
4
Your wiring may be old and/or low quality or with a long wiring path.