Possible Cause
Judgment Criterion
Troubleshooting Method
The optical module of the
ONU is abnormal. For
example, the transmit
optical power of the
optical module is
excessively small or its
receiver sensitivity is
low.
Replace the faulty ONU with a
normal one. It is found that the
new ONU is auto discovered by
the OLT.
An alternative is to locate the
fault as follows:
l
Set the optical module of
the ONU to the continuous
mode, and measure the
transmit optical power by
using the optical power
meter. It is found that the
actual transmit optical
power is beyond the normal
range (1.5 dBm to 5.0
dBm).
l
Measure the receive optical
power of the ONU by using
the optical power meter. It
is found that the actual
receive optical power is
within the normal range
(-27 dBm to -8 dBm).
Replace the faulty ONU or the
optical module of the ONU.
The Patch cord of the
ONU is broken or bent
excessively.
Check the Patch cord of the
ONU. It is found that the Patch
cord is broken or bent
excessively.
Replace the Patch cord of the
ONU.
Step 5
Record the results of the preceding steps in the form for reporting a fault (see Fault Report Form),
fill out the entire form, and then submit the form to Huawei for technical support (see
).
Step 6
End.
----End
Failure to Recover GPON ONU Configurations
An ONU connected to a GPON port of an OLT can go online successfully, but the queried
Config state
of the ONU is displayed as
failed
by running the
display ont info
command on
the OLT.
Location Method
NOTE
Configuration recovery refers to a process in which, after an ONU goes online, the OLT issues
configurations to the ONU and then the ONU adjusts its operating parameters based on the issued
configurations.
SmartAX MA5612 Multi-service Access Module
Maintenance Guide
6 System Fault Handling
Issue 01 (2012-07-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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