故障分析一：
Fault analysis I:
故障现象：镜子导光性能差，图像偏暗（光源和光束确认正常）
Fault phenomenon: poor light guide performance of the mirror, dark image (light source and beam confirm normal)
检测结果：镜子导光束接头受污发黄；
Test results: the connector of the guide beam of the mirror is stained and yellow;
预防措施：清洗保养时，导光接头处需拆卸清洗干净，光源亮度应调整在适合位置，亮度不易过大，导致光纤受热发黄损坏；
Preventive measures: during cleaning and maintenance, the light guide joint shall be disassembled and cleaned, and the brightness of the light source shall be adjusted to a suitable position. The brightness is not easy to be too large, resulting in yellow damage of the optical fiber due to heating;
故障分析二：
Fault analysis II:
故障现象：镜体弯曲变形，没有图像；
Fault phenomenon: the mirror body is bent and deformed without image;
检测结果：大力弯折或空中跌落所致；
Test results: bending or falling in the air;
预防措施：手术中调整视野角度时需保护好镜子本身，镜子与镜鞘连接是必须对准位置并卡锁固定，不宜用力过猛转动镜子；清洗或手术时应正确握持镜子，以免掉落危险；

Precautionary measures: during the operation, the mirror itself should be protected when adjusting the field of vision. The connection between the mirror and the lens sheath must be aligned and locked. It is not suitable to turn the mirror too hard. If you clean or operate, you should hold the mirror correctly so as not to fall into danger.
故障分析三：
Fault Analysis III:
故障现象：镜子前端物镜受损或密封性破坏，成像模糊；
Fault phenomenon: the objective lens at the front of the mirror is damaged or the sealing is damaged, and the image is blurred;
检测结果：被电刀、射频、动力等辅助设备打伤；
Test results: injured by electric knife, radio frequency, power and other auxiliary treatment equipment;
预防措施：使用辅助设备时，要保证在视野内操作；
Preventive measures: when using auxiliary equipment, ensure safe operation in the field of vision;