6-4 Service Guide N5227-90001
Replaceable Parts PNA Series Microwave Network Analyzers
Rebuilt-Exchange Assemblies N5227A
Rebuilt-Exchange Assemblies
Under the rebuilt-exchange assembly program:
• Certain factory-repaired and tested assemblies are available on a trade-in basis.
• Exchange assemblies are offered for lower cost than a new assembly, but meet all factory specifications 
required of a new assembly.
• The defective assembly must be returned for credit under the terms of the rebuilt-exchange assembly 
program.
• Spare assembly stock desired should be ordered using the new assembly part number.
Figure 6-1 Module Exchange Procedure