ZyXEL Communications PLA-491 User Manual
Chapter 7 LEDs and Troubleshooting
PLA-4xx Series User’s Guide
71
The following table describes the behavior of the lights on the PLA491.
7.2 Power and Light Problems
V
The PLA-4xx does not turn on. None of the lights turn on.
1 Make sure you are using the power cord included with the PLA-4xx.
2 Make sure the power cord is connected to the PLA-4xx and plugged in to an appropriate
2 Make sure the power cord is connected to the PLA-4xx and plugged in to an appropriate
power source. Make sure the power source is turned on.
3 Disconnect and re-connect the power cord to the PLA-4xx.
4 Remove the powerline adapter from the outlet. Then connect an electrical device that
4 Remove the powerline adapter from the outlet. Then connect an electrical device that
you know works into the same power outlet. This checks the status of the power outlet.
5 If the problem continues, contact the vendor.
Table 16 PLA491 Lights
LIGHTS
ICON
COLOR
STATUS
DESCRIPTION
POWER
Green
On
The PLA491 is on and receiving power.
It also indicates a successful connection using the
ENCRYPT button.
It also indicates a successful connection using the
ENCRYPT button.
Blinking
The PLA491 is starting up.
It also indicates the PLA491 is trying to connect with
another device using the ENCRYPT function.
Blinking at the same time as the HomePlug light indicates
an unsuccessful connection if you have used the
ENCRYPT button.
It also indicates the PLA491 is trying to connect with
another device using the ENCRYPT function.
Blinking at the same time as the HomePlug light indicates
an unsuccessful connection if you have used the
ENCRYPT button.
Off
The PLA491 is not receiving power.
HomePlug
Green
On
The PLA491 detects another powerline adapter. The data
transfer rate is greater than 40 Mbps.
transfer rate is greater than 40 Mbps.
Amber
The PLA491 detects another powerline adapter. The data
transfer rate is between 10~40 Mbps.
transfer rate is between 10~40 Mbps.
Red
The PLA491 detects another powerline adapter. The data
transfer rate is between 0~10 Mbps.
transfer rate is between 0~10 Mbps.
Green/
Amber/
Red
Amber/
Red
Blinking
The PLA491 is communicating with another powerline
adapter. Data is being transmitted and/or received.
Blinking at the same time as the POWER light indicates an
unsuccessful connection if you have used the ENCRYPT
button.
adapter. Data is being transmitted and/or received.
Blinking at the same time as the POWER light indicates an
unsuccessful connection if you have used the ENCRYPT
button.
Off
The HomePlug port does not detect another powerline
adapter.
adapter.
ETHERNET
Green
On
The ETHERNET port is on and ready and the PLA491
detects a device connected to it.
detects a device connected to it.
Blinking
The PLA491 is communicating with a router, modem,
switch or a computer connected to it.
switch or a computer connected to it.
Off
The PLA491 does not detect any devices connected to its
ETHERNET port.
ETHERNET port.