1. First of all, the first condition when the red light is on is that the line is broken, and the open line can be buried to see where it is broken.
2. Then call the master immediately.
3. The optical cable is broken and cannot be connected by oneself. A special machine must be used.
4. If the light cat at home has been used for a long time, the light cat is also more likely to be damaged. You can ask the master to come and check.
5. If it breaks down, go to the business hall and buy it again. The warranty period of the light cat is one year.
6. Construction near home may break the main line.
7. Only by waiting for professionals to rush to repair and asking the neighbors, can we determine whether the network in the area is disconnected.
8. Generally, the optical fiber line cannot be bent, but is coiled into small loops.
9. If there is any bend in the buried line, just straighten it.
10. Finally, when cleaning, if it is accidentally loosened, check whether the interface of the lower and rear doors is loose. If it is loose, just insert it tightly.