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3458A with error 202

Question asked by MRR on May 7, 2020
Latest reply on May 13, 2020 by MRR

3458A....Occasionally I see Error 202,"Hardware Failure -- Test: DC Board" and I can see in manual that it should be board A1. The error comes up maybe once in every week and disappears again after a few power off/on or running self tests a few times. It is not that often that I want to send it in for repair at the moment, but can someone explain what exacly is testet/measured on the board here when fails? Especially what "secondary test" means? Thanks in advance. Martin