The maintenance of cable lines is an important part of the safe operation management of cables. Through organized and planned maintenance work, eliminating defects in cable lines and their ancillary equipment, improving the integrity of equipment, is effective in ensuring safe operation of the line. The method, below, is told by the electronics manufacturer to point out the points that need to be noted when repairing the cable fault.

1. When the cable is moved, removed and modified, and the connector is replaced, it must be powered off before grounding to confirm that there is no electricity before it can work.

2. Do not touch the cable armor and move the cable when servicing the cable to prevent electric shock.

3. Before the maintenance personnel enter the well, they should wait until the turbidity in the well is removed before they can enter. When working in the well, wear a safety helmet, and there should be special guards around to prevent objects from falling into the well and injuring people.

4. The operator who cuts off the cable must stand on the insulation platform and wear insulated gloves to operate. The cutting tool is grounded on the ground.

5. Before repairing the faulty cable, the cable conductor should be grounded and discharged. When grounding, a 0.5m deep iron rod can be used as the grounding rod at the working place.

6. When digging the cable, when digging the cable protection, it is necessary to have special personnel to monitor and guide, in order to continue excavation and excavation of the cable joint. If it is suspended below, it should be suspended.

7. When lifting the underwater cable on the ship, keep the hull stable and prepare the lifebuoy for emergency.