H6.Investigation codes: updated.Investigation summary: five used samples outside their original packaging were received for evaluation.One out of five samples failed electrical testing.Four samples failed the vacuum testing, three samples failed the air leak testing, and no samples failed the water leak test.The five returned samples were then tested by introducing red ink using a syringe, to identify the cause of the leak found during air and vacuum testing.Two of the five exhibited air leakage when extra force was applied.The sample that failed the electrical test was visually inspected by removing the cover to verify the solder appearance.The solder application was incorrect as solder excess was observed.The customer's indicated failure of "no waveforms no data being output" was confirmed.A capa was opened to investigate the root cause of the leak and electrical issues.A review of the device history records (dhr) shows there were no observations or nonconformities recorded during manufacture to suggest an issue of this nature would occur with this lot of products.
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