Titan UMAP 2110, Hardware Installation And User'S Manual

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Troubleshooting the UMAP 2110
Procedure 3-1 Troubleshoot UMAP 2110 Power Up Problems
Problem indication:
• the SYS LED on the front panel is not lit even though the DSLAM is powered up
• alarm that indicates a system power up problem
• subscribers connected to the DSLAM do not have DSL service; POTS service is ok
1 Check that the power switch on the front panel is set to the ON position.
2 Check that the power feeds are connected to the DSLAM, and that power is present on the two
power feeds with correct polarity.
3 Replace the UMAP 2110.
4 Contact your provider.
Procedure 3-2 Troubleshoot Fan Card Power Up Problems
Problem indication:
• alarm that indicates a fan problem
1 Check that the fan card is completely inserted in its slot.
2 Replace the fan card.
3 Contact your provider.
Procedure 3-3 Troubleshoot Fiber Optics Problems
Problem indication:
• the GBE1/GBE2 LED on the system front panel is not lit (maybe the signal power detected by the
fiber optical receiver being below the minimum power threshold) but the SFP interface has been
activated
• alarm that indicates loss of signal
• subscribers connected to the DSLAM do not have DSL service; POTS service is ok
1 Check the connection of the fiber optics link. Check that the connections are secure and that the
transmit and receive connections are not reversed.
2 Disconnect the fiber optics link from the dual fiber optics connector and do a physical loopback at
the UMAP 2110.
a If the GBE1/GBE2 LED turns green, the problem is with the fiber optics link.
b If the GBE1/GBE2 LED does not turn green, the problem is with the DSLAM. Follow
Procedure 3-1 to troubleshoot the DSLAM.
3 If the problem is with the fiber optics cabling, clean or replace as appropriate.
4 Contact your provider.
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