Local service department checked the subject device and found that the main lamp could not be lit up due to failure of the power supply unit and the igniter.It was also found that the spare lamp could not be lit up due to the failure of the spare lamp.The subject device was not returned to olympus medical systems corp.(omsc) for evaluation.Therefore, the exact cause of the reported event could not be conclusively determined.The manufacturing record was reviewed and found no irregularities.Since the product was about one and a half years old, it was unlikely that it deteriorated over time.Therefore, it was presumed that the accidental failure of the electronic components caused the failure of the power supply unit and the igniter, then lamps did not light.It was also presumed that the emergency light could not be turned on and the emergency light display flashed.
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