The follow-up is being submitted to report the additional information obtained.The device referenced in this report was returned to olympus for evaluation.The evaluation duplicated the reported event and the endoscope image remained blank.When a water leak test was performed, the outer surface of the insertion tube and the instrument channel port were found leaking.When a demo-unit connector was connected, the image remained blank.When the subject device was disassembled, the power supply line of the ccd unit was found corroded and open.The manufacturing record of the subject device was reviewed without irregularity.From the evaluation result, as the probable cause for this event, it is considered that moisture intruded into the inside of the subject device due to leaking and the power supply line of the ccd unit was corroded, then the image became pitch dark because the power was not supplied.
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