What if the door and window locks are broken?

First, use a screwdriver to unscrew the two bolts on the door inner gusset; When the two bolts on the door inner gusset plate are loosened, the door outer gusset plate, the connecting rod and the door outer handle can be removed, and then the fixing bolt in the middle of the lock body is loosened with a screwdriver. When all the above things are removed, you can continue to remove the pinch plate and lock cylinder in the door, and the new lock cylinder can also be replaced and installed at this time; When replacing a bad lock cylinder with a new lock cylinder, the lock body can be replaced below. First, loosen the two bolts that fix the lock body with a screwdriver, then pull the lock body out straight with a little force, then remove the damaged lock body and replace it with a new lock body; After the lock core and lock body are replaced with new ones, the pinch plate, handle and lock core can be installed inside the door. Tighten the bolts in the middle of the lock body first, and then tighten the bolts on both sides of the lock body; Step 1: Install the gusset on the outside of the door and tighten the bolt with a screwdriver from the inside of the door. So the door lock is fixed!