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.
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