HP 8924E, Assembly

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Chapter 1, Introduction
Troubleshooting Strategy
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Troubleshooting Strategy
You can repair the Test Set yourself or send it to your local Hewlett-Packard
Customer Service Center. Before starting a repair, you should become familiar
with basic Test Set operation using the User’s Guide.
Troubleshooting relies on built-in diagnostics. Because some diagnostic results
may be ambiguous, further interpretation and testing may be required. There are
several diagnostic routines built into the Test Set:
• Power-up self-test diagnostics to test controller functioning. These are automatically
run when the instrument is turned on, and can also be run after the instrument has been
on.
• RF (Radio Frequency) assembly diagnostics.
• AF (Audio Frequency) assembly diagnostics.
• Digital assembly diagnostics for CDMA signals.
Troubleshooting hints in this manual include:
• Instructions on how to begin troubleshooting (see chapter 2, "Troubleshooting" ).
• Block diagrams and theory of operation (see chapter 11, "Block Diagrams" ).
• Detailed information about the built-in diagnostics (see chapter 14, "Diagnostics
Descriptions" ).
• Error message explanations (see Appendix A: Error Messages) .