Corrective Maintenance - Symmetricom SSU-2000 User Manual

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
These tables also outline possible component problems and corrective action. Refer
to Re-ordering
or returning equipment to the factory.
Caution: For continued fire protection, fuse the interface "A" power
feeds at the power distribution source for (5A
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.
12713020-002-2 Revision F.01 – January 2007
Information, on page 137, for information on re-ordering, re-packing,
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.
Chapter 5 Maintenance and Troubleshooting
Corrective Maintenance
Table 5-1 and Table
VDC).
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SSU-2000 User's Guide 129
5-2.