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Symmetricom TimeHub 5500 User Manual

Symmetricom TimeHub 5500
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097-55501-01 Revision M – January 2009 TimeHub 5500 Users Guide 243
Chapter 5 Maintaining the TimeHub 5500
Replacing Fuses
6. Reconnect each cable to its appropriate port connector.
7. Verify that all alarm conditions are cleared. If not, verify which alarms are present
using the THC 3.2 application and correct the faults. For assistance, see
Contacting Symmetricom Global Services, on page 264.
8. Tighten the captive screws to complete the procedure.
Expansion Shelf
Use this procedure to replace a failed Output Connector module of any type on the
Expansion shelf.
1. Put on a properly grounded ESD wrist strap.
2. Disconnect all cables from the module, noting which cable is connected to each
port.
3. Using a slotted screwdriver, loosen the captive screws on the module.
4. Grasp the top and bottom edges of the module to pull and remove the failed
module from the shelf.
5. Insert the replacement module into the shelf: ensure that the card aligns properly
with its mating backplane connector; push the module into place until it is fully
seated into the backplane connectors.
6. Reconnect each cable to its appropriate port connector.
7. Verify that all alarm conditions are cleared. If not, verify which alarms are present
using the THC 3.2 application and correct the faults. For assistance, see
Contacting Symmetricom Global Services, on page 264.
8. Tighten the captive screws to complete the procedure.
Replacing Fuses
Replacing the Fuse in the Clock Card
To replace the fuse on the Clock card, follow the steps in this section. Figure 5-11
shows the location of the fuse holder.

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Symmetricom TimeHub 5500 Specifications

General IconGeneral
BrandSymmetricom
ModelTimeHub 5500
CategoryData Loggers
LanguageEnglish

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