Chapter 7 Troubleshooting
PMG1005-T20B User’s Guide
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4 If this does not work, you have to reset the GPON Device to its factory defaults. See Section 1.5 on page
8.
7.4 Internet Access
I cannot access the Internet.
1 Check the hardware connections, and make sure the LEDs are behaving as expected.
The PON LED turns off if the optical transceiver has malfunctioned or the fiber cable is not connected or
is broken or damaged enough to break the PON connection.
The LOS LED turns red if the GPON Device is not receiving an optical signal.
The LOS LED turns blinking red if the GPON Device is receiving a weak optical signal.
See Section 1.4 on page 7 for details about the other LEDs.
2 Make sure you entered the ISP account information correctly in your computer. These fields are case-
sensitive, so make sure [Caps Lock] is not on.
3 Disconnect all the cables from your GPON Device (refer to the Quick Start Guide).
4 Turn the GPON Device off and on.
5 If the problem continues, contact the ISP.
I cannot access the Internet anymore. I had access to the Internet (with the GPON Device), but
my Internet connection is not available anymore.
1 Check the hardware connections, and make sure the LEDs are behaving as expected. The PON LED
turns off if the optical transceiver has malfunctioned or the fiber cable is not connected or is broken or
damaged enough to break the PON connection. See Section 1.4 on page 7 for details about the other
LEDs.
2 Turn the GPON Device off and on.
3 If the problem appears to be the GPON Device, contact your vendor.
The Internet connection is slow or intermittent.
1 Make sure the LEDs are behaving as expected.
The LOS LED turns blinking red if the GPON Device is receiving a weak optical signal.
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