Service manual

Chapter 2 59
Troubleshooting
Perform Measurement System Verification
1. Chapter Title
2. Troubleshooting
3. Chapter Title
4. Chapter Title
5. Chapter Title
NOTE In case of installing the E4402B (opt. 300), if the spectrum measurement result is not good,
use the Ref Out on the E5040A and check the E5040A with “Step 1. TAA Measurement
using E5040A Spectrum Measurement Module” on page 51 and “Step 2. TAA
Measurement using E5038B Parametric Measurement Module” on page 58. If the
E5040A’s measurement result is good, a failure in the E4402B is suspected.
If the both result is not good, replace E5029K Onstage Buffer Board.
Table 2-10 Faulty Assembly Isolation
Measurement Results Suspicious Assembly
Level, Frequency and TAA Value
Obtained by Spectrum
Measurement
TAA Value Obtained by TAA
Measurement Function
Not Good Good E5040A Spectrum Measurement
Module, 4395A Spectrum
Analyzer or E4402B Spectrum
Analyzer (replace)
Good Not Good • E5038B Parametric Measurement
Module (replace)
• E5036A Filter Matrix Module
(replace)
Not Good Not Good • E5029K Onstage Buffer Board
(replace)
• E5036A Filter Matrix Module
(replace)
Good Good (None)