The product was returned to pentax medical for repair.Our technician checked the returned unit and confirmed that the laser cut filter was broken.Based on the result, we concluded that it was caused due to the excessive force applied on the laser cut filter.In addition, our technician confirmed that the lcb distal cover glass broken, the insertion flexible tube buckled, the suction channel buckled, the air/water channel leak, the remote control buttons cut, the objective lens dirty, the distal body worn out, and the u/d pulley wire rupture; however, these defects 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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