This report is being supplemented to provide additional information based on the legal manufacturer's final investigation.A review of the device history record (dhr) found no deviations that could have caused or contributed to the reported issue.Based on the results of the investigation, the probable cause is likely the amount of use and age of the device (over 12 years) causing the parts on the front panel unit to be worn away and failed due to repeated use for a long period and a part of the leds did not light up.This issue is addressed in the instructions for use (ifu): "do not apply excessive force to this video system center and/or other instruments connected.Otherwise, damage and/or malfunction can occur.Do not wipe the external surface with hard or abrasive wiping material, the surface will be scratched.Store the equipment in the level position in a clean, dry and stable location.".
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