According to the problem analysis result done by TSA, you can directly begin the subsequent troubleshooting process from the corresponding potential root cause.
1-4-1-1 - Replace the sealing bolt O-ring & other 2 O-rings (see SOP here), and verify the cup rinser for any leaks or malfunctions.
- Result 1 - Functions are fine, and no leak.
Issue closed. (Root cause: Cup rinser sealing bolt o-ring failure) - Result 2 - Still malfunctions (like the cup rinser not rebounding).
Escalate to FAE.