Accton Technology Media Converter EC3802-WDM - Manual (Page 24)

Troubleshooting
24
Troubleshooting
Diagnosing CPE Indicators
The FTTH CPE can be easily monitored through panel indicators to identify
problems. The table below describes common problems you may encounter and
possible solutions.
If You Cannot Connect to the Internet
• Check that the attached computer is properly configured for TCP/IP. See
“Configuring the TCP/IP Protocol” on page 21.
• Make sure the correct network adapter driver is installed for the computer
operating system. If necessary, try reinstalling the driver.
• Check if the network adapter’s speed or duplex mode has been configured
manually. Note that we recommend setting the adapter to auto-negotiation when
installing the network driver.
Symptom Cause Solution
PWR indicator does
not light up after power
on.
Power outlet, or external
AC power adapter may
be defective.
• Check the power outlet by plugging in another device
that is functioning properly.
• PoE power to the CPE may be not be supplied to the
LAN port. Check the PoE source device to be sure
that it is configured to deliver PoE through the
connected port. Also check that the PoE source
device has not exceeded its power budget and
turned off the port power.
• Contact your FTTH service provider.
LINK indicator does
not light up after
making a connection.
Network interface (e.g., a
network adapter card in
the attached computer),
network cable, or CPE
UTP port may be
defective.
• Verify that the CPE and computer are powered on.
• Be sure the cable is plugged into both the CPE and
the computer.
• Verify that the proper cable type is used and its length
does not exceed specified limits.
• Check the network adapter in the computer and
cable connections for possible defects. Replace the
defective cable if necessary.
OPT indicator does not
light up after power on.
The CPE is not powered
on, the link is down at the
Central Office, or the
fiber cable may be
defective.
• Verify that the CPE is powered on.
• Be sure the fiber cable splice and SC connector are
connected correctly in the CPE.
• Verify that the fiber cable length does not exceed
specified limits.
• Contact your FTTH service provider.