Troubleshooting
61287802F1-34B
45
Revision B
WARNING!
f
■ Do not look into the ends of optical fibers. Exposure to invisible LASER radiation may
cause serious retinal damage or even blindness. Verify the optical source is disabled
through the use of an optical power meter before handling optical fibers.
■ This equipment must be connected to a known good earth ground at all times during
service. Refer to the National Electrical Code (NEC) and state/local codes for details on
grounding requirements.
7.1 LEDs Normal but Problems Still Exist
If the LEDs are in the normal state but problems still exist, perform the following trouble
-
shooting steps:
1. Check to see if other ONTs installed in the PON are working correctly. If they are, the
problem is with the current ONT. If they are not, then the problem is with the PON or the
OLT.
2. If the trouble is of a random or intermittent nature, check for loose or broken connections
at the common mounting platform. Also make sure all optical connections are clean and
tight.
3. If the trouble is solid, remove the Customer Provided Equipment (CPE) wiring and
perform the following tests:
“Provision Ethernet Interface at OLT”
on page 43. Verify
the OLT can run and pass the loop-back tests for the Ethernet port.
If the above tests are successful, the indication of the trouble is directed back toward the CPE
wiring/equipment.
7.2 ONT Trouble Isolation
This section describes how to isolate problems based on faults reported through LEDs:
■
■
“Network Status Troubleshooting”
■
