Running Self-Test - Keysight Technologies E8257D Service Manual

Troubleshooting
Getting Started with Troubleshooting
Running Self–Test
A bad assembly can cause other assemblies to fail. The internal failure tree will
identify the most likely failed assembly and report it as the "most independent
failure." Troubleshoot and replace that assembly before troubleshooting and
replacing other assemblies.
When you replace an assembly a good assembly will pass self–test without any
adjustments.
1. On the instrument front panel, press the Utility hardkey.
2. Select the following softkeys:
3. When the Self–Test finishes, one of the following messages displays:
4. If the Self–Test failed, look up the reported most independent failure in the
5. Troubleshoot and repair the most independent failure.
6. After you replace the failed assembly, run the Self–Test again.
7. If another assembly is reported as the most independent failure, repeat
E8257D/67D, E8663D PSG Signal Generators Service Guide
a. Instrument Info/Help Mode
b. Sel f Test
c. Run Complete Sel f Test
— If the Self Test passed: "The current status of self test is: Success All
self tests have passed."
— If the Self–Test failed: "The current status of self test is: Failed." The
message also reports the most independent failure.
"Self–Test Failures and Related Troubleshooting"
steps 4 thru 6 until the Self–Test passes.
section on page 25.
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