12713020-002-2 Revision D – April 2004 SSU-2000 User’s Guide 113
Maintenance and Troubleshooting
Corrective Maintenance
Corrective Maintenance
The SSU-2000 and SDU-2000 have a modular design and field service is limited to
replacing the FRUs (field replaceable units) identified in Table 5-1 and Table 5-2.
These tables also outline possible component problems and corrective action. Refer
to Re-ordering Information, on page 121, for information on re-ordering, re-packing,
or returning equipment to the factory.
Warning: To avoid serious personal injury or death, exercise
caution when working near high voltage lines. In particular:
Use extreme caution when installing the GPS antenna near,
under or around high voltage lines.
Follow local building electrical codes for grounding the antenna
system that is used with the SSU-2000.
Caution: For continued fire protection, fuse the interface “A” power
feeds at the power distribution source for (5A
---
vDC).
This unit must be grounded. Refer all servicing to qualified
personnel.
Caution: For continued EMC compliance, replace all deformed
module gaskets with the same type. Clean gaskets and mating
surfaces.
Secure all modules with captive screws.
Caution: To maintain EMC compliance, use only properly shielded
cabling on all telecom signal wiring, including I/O, clocks, and
Ethernet connections. Ensure that connections are appropriately
grounded.
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