Lucent DDM-2000 OC-3 User And Service Manual page 558

363-206-285
Issue 3, June 2001
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10. Any errors observed in the current time line are an indication of
transmission degradation on the indicated path. The path must be
operating error free before proceeding further.
NOTE:
A CP removed alarm will occur in this step when the OLIU is
removed. An inc. OC-12 LOS (blinking FAULT LED on
OLIU) alarm will occur at the other node connected to the
removed fibers. Other nodes will receive inc. VT AIS
and inc. STS1 AIS alarms.
11. At the starting Node (Node 1 in this example), remove the
faceplate cable connector, remove optical fibers from MAIN 1
OLIU, and lift the faceplate latch, then remove MAIN 1 OLIU.
12. Determine if the removed 24-Type OLIU is equipped with an LBO
in its OUT connector. If it is, remove and reinstall it into the OUT
connector on the replacement 29-Type OLIU.
NOTE:
When the 29-Type OLIU is installed in this step, an
unexpected CP type minor alarm will occur and its
FAULT LED will be lit. At the connecting node, an
inc. OC-12 LOS alarm will occur. When fibers are
reconnected, the unexpected CP type status is still
present at this Node and the FAULT LED remains lit.
13. At the starting Node, install a 29-Type OLIU into MAIN 1 OLIU
slot and reconnect optical fibers. Do not reinstall the faceplate
cable connector at this time.
DDM-2000 OC-3 M
Circuit Order:
ULTIPLEXER
NTP-058
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