We checked the returned unit and confirmed that the operation channel stuck accessory/object.Based on the result, we concluded that it was caused due to the insufficient reprocessing at the facility on the operation channel.In addition, we confirmed that the lcb distal cover glass fluid damage, the light guide cable compressed, the angle wire play, the operation channel leak, the insertion flexible tube (ift) dirty, and the lg prong top loosened; however, they are not the main cause, and/or irrelevant to the alleged complaint.Based on the technical report ""hr-rpt-0588(channel)"" and/or the risk analysis results, it was evaluated to submit mdr.
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