User's Manual Part 4

Basic Troubleshooting – continued
11-2 1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU MAY 2004
PRELIMINARY
Table 11-2: Force Ethernet LAN A to Active State as Primary LAN
Step Action
1 If LAN A is not the active LAN, make certain all external LAN connectors are either terminated with
50Ω loads or cabled to another frame.
2 If it has not already been done, connect the LMF computer to the stand–alone or starter frame, as
applicable (Table 6-6).
3 If it has not already been done, start a GUI LMF session and log into the BTS on the active LAN
(Table 6-7).
4 Remove the 50Ω termination from the LAN B IN connector in the power entry compartment at the
rear of the stand–alone or starter frame. The LMF session will become inactive.
5 Disconnect the LMF computer from the LAN shelf LAN B connector and connect it to the LAN A
connector.
6 If the LAN was successfully forced to an active state (the cards in any cage can be selected and
statused), proceed to step 13.
7 With the 50Ω termination still removed from the LAN B IN connector, remove the 50Ω termination
from LAN B OUT connector. If more than one frame is connected to the LAN, remove the termination
from the last frame in the chain.
8 If the LAN was successfully forced to an active state (the cards in any cage can be selected and
statused), proceed to step 13.
9 With the 50Ω terminations still removed from LAN B, unseat each GLI card in each frame connected
to the LAN, until all are disconnected from the shelf backplanes.
10 Reseat each GLI card until all are reconnected.
11 Allow the GLIs to power up, and attempt to select and status cards in the CCP shelves. If LAN A is
active, proceed to step 13.
12 If LAN A is still not active, troubleshoot or continue troubleshooting following the procedures in 13.
13 Replace the 50Ω terminations removed from the LAN B IN and OUT connectors.
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