Excavate the cable at the break point and use a fiber optic cutter to remove the damaged section. Use a high-precision fiber cleaver to prepare the fiber ends for. Fiber optic cable cuts can be alarming, especially with problems like signals being dropped, internet interruptions, or even network failures. However, you don't need to panic! It can still be fixed. If you have the right tools and knowledge, you can definitely find the solution. Construction Activities: Accidental damage during construction. Fiber optic troubleshooting is an essential skill for network administrators, technicians, and engineers responsible for maintaining and repairing fiber optic systems. Cut out the damaged section using a fiber optic cutter to minimize further damage.