Evaluation summary: we checked the returned unit and confirmed that the air/water nozzles loosened.Based on the result, we concluded that it was caused due to the excessive force applied on the air/water nozzle.In addition, we confirmed that the operation channel accessory, the segment steel braid technical required, the bending rubber technical required, the insertion flexible tube (ift) buckled, the light guide fiber bundle (lcb) broken; however, they are not the main cause, and/or irrelevant to the alleged complaint.
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