Assembly Replacement Sequence
The following steps show the sequence to replace an assembly in an HP 8753E
network analyzer.
1. Identify the faulty group. Refer to Chapter 4, “Start Troubleshooting Here.
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Follow up with the appropriate troubleshooting chapter that identifies the
faulty assembly.
2. Order a replacement assembly. Refer to Chapter 13, “Replaceable Parts.
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3. Replace the faulty assembly and determine what adjustments are necessary.
Refer to Chapter 14, “Assembly Replacement and Post-Repair Procedures.”
4. Perform the necessary adjustments. Refer to Chapter 3, “Adjustments and
Correction Constants.
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5. Perform the necessary performance tests Refer to Chapter 2, “System
Verihcation
and Performance
Tests.
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Before You Start Troubleshooting
Make sure
ail
of the assemblies are
llrmly
seated. Also make sure that input R
has a signal of at least -35
dBm
(about 0.01 Vp-p into 50 ohms) at all times to
maintain phase lock.
7-2
Source Troubleshooting
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