Harris Corporation Constellation™
Signal Processing Section 11-33
FIELD-
REPLACEABLE
UNITS
Removing the SPU Controller
Removal of the SPU Controller produces loss of:
• All of the hardware protection mechanisms
• All high-level SCAN protocol features
• Spur and Aux SCAN channels
This is not a service-affecting procedure.
Before removing the SPU Controller, ensure that
the system is carrying traffic in the unlocked
mode.
1. Use the 2 extractor tabs to unlock the SPU Controller from the shelf.
2. Carefully pull out the Service Channel from the shelf.
Installing the SPU Controller
1. Check the part number of the SPU Controller to ensure that the correct
unit is being installed.
2. Ensure that the 2 extractors are in the unlocked position.
3. Carefully slide the SPU Controller into the designated slot in the shelf until
the unit plugs into the backplane.
4. Use the 2 extractor tabs to lock the unit into place.
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