To Troubleshoot The Instrument; Primary Trouble Isolation - Keysight E5071C ENA Service Manual

Troubleshooting

To Troubleshoot the Instrument

To Troubleshoot the Instrument
This section describes basic procedural flow of troubleshooting when servicing
the E5071C. The primary procedural tool in this section is the flowchart. The
flowchart contains entire troubleshooting path from a failure symptom to the
isolation of faulty assembly, and will direct you to the completion of repair in an
ordinary manner through the possible failure symptoms. Reference letters
(Yes/No) on the flowcharts point to procedural steps that briefly explain the
troubleshooting method to be performed next.

Primary Trouble Isolation

The primary trouble isolation procedure can be performed without
disassembling the E5071C.
Step 1. Turn the instrument power on
About a few minutes after the E5071C is turned on, the measurement view is
displayed on the screen. The display on the screen should be similar to
4-8, "Measurement view," on page
Step 2. Check the display
•
•
•
Step 3. Check the basic function
If the front-panel/keyboard/mouse controls, LCD display, data storage,
remote interface or another function (except for measurement part) does not
work correctly, go to
Step 4. Check the measurement function
If the instrument fails on performance test, go to
troubleshooting" on page
If the measurement function does not work correctly, perform the diagnostics
test provided in the E5071C's service function. When the diagnostics test
fails, go to
The diagnostics test includes some unique measurement function tests in
addition to the tests that are common to the power-on self test. Thus, it is
necessary to perform this test even if the power-on self test passed.
Keysight E5071C ENA Network Analyzers
If no display appears on the LCD after the E5071C is turned on, go to
Display troubleshooting" on page
If the E5071C stops in booting process despite something being displayed
on the LCD, go to "Boot Process Troubleshooting" on page
The power-on self test is performed once automatically after the E5071C
measurement view is displayed. If the power-on self test fails, go to
"Troubleshooting Using Diagnostics Test" on page
"Function Specific Troubleshooting" on page
"Troubleshooting Using Diagnostics Test" on page
Figure 4-2 shows the trouble isolation flow chart.
75.
69.
101.
Figure
71.
76.
92.
"Performance test failure
76.
"No
67