We checked the returned unit and confirmed that the ccd module distorted image.Based on the result, we concluded that it was caused due to the excessive force applied on the ccd module.In addition, we confirmed that the u/d knob broken, the insertion flexible tube (ift) leak, and the distal body melted; however, they are not the main cause, and/or irrelevant to the alleged complaint.Based on the technical report ""hr-rpt-0586(image failure)"" and/or the risk analysis results, it was evaluated to submit mdr.
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