钳道管漏水：是由于使用活检钳等附件不当造成钳道破损，属 C 级修理 。

Leakage of forceps: It is caused by improper use of biopsy forceps and other accessories, resulting in damage to the forceps and classified as a C-level repair.

导管束断：使用年限较长，弯曲管不良造成，属 C+ 导光束级修理 。

Tube bundle breakage: caused by long service life and poor bending of the tube, it belongs to C+beam level repair.

弯曲角度不到位：钢丝前端断：使用年限长，磨损造成， C 级修理 。

Inadequate bending angle: Broken front end of steel wire: Long service life, caused by wear and tear, C-level repair.

弯曲角度不到位：钢丝后端脱焊和使用一定时间后钢丝变长，D 级修理，

Inadequate bending angle: The rear end of the steel wire is detached and the steel wire becomes longer after a certain period of use, D-level repair,

（在弯曲好的情况）。

(In a well bent condition).

弯曲橡皮漏水：碰伤造成比较多， D 级修理更换专用橡皮即可 。

Bending rubber leakage: It is caused by more scratches. D-level repair can replace the specialized rubber.

喷嘴堵塞：清洗不干净， D 级修理更换喷嘴 。

Nozzle blockage: cleaning not clean, D-level repair to replace nozzle.

导像束黑点多或龟裂：纤维镜使用年限长或保养不当造成，A 级修理 。

Multiple black spots or cracks in the imaging beam: caused by long service life or improper maintenance of the fiber mirror, A-level repair.

电子内窥镜镜头模糊：具体故障需经漏水测试，烘干，拆镜检查仔细判别才能定如何修理（严重时要做 A 级修理）。

The lens of the electronic endoscope is blurry: specific faults need to be carefully judged through water leakage testing, drying, and disassembly inspection before determining how to repair (in severe cases, A-level repair should be performed).

电子镜打角度时有网状出现：使用年限长 CCD 根部导线断造成，那一定要做 A 级大修。

When adjusting the angle of the electronic mirror, there is a mesh like appearance: it is caused by a broken wire at the root of the CCD due to its long service life. Therefore, it is necessary to undergo an A-level major repair.