How to solve the broken lock?

First, preparation: first, prepare the tools needed in the replacement process, such as the lock cylinder of the screwdriver lock body, etc. Master answers how to solve the problem? 2. How to replace the door lock: 1. First use a screwdriver to loosen the two bolts on the gusset plate inside the door; 2. When the two bolts on the gusset plate inside the door are loosened, you can take off the connecting rod of the gusset plate outside the door and the handle outside the door, and then use a screwdriver to loosen the fixing bolts in the middle of the lock body; 3. When all the above things are done After removal, the buckle plate and lock cylinder inside the door can be removed, and the new lock cylinder can also be replaced and installed at this time; 4 when the new lock cylinder replaces the damaged 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 outwards in a straight line with a point of force. After the damaged lock body is removed, a new lock body can be replaced; 5 after the lock cylinder and lock body are replaced with new ones, the buckle plate handle and lock cylinder inside the door can be installed. First, tighten the bolts in the middle of the lock body, and then tighten the bolts on both sides of the lock body; 6 finally, install the gusset plate on the outside of the door, and fasten the bolts with a screwdriver from the inside of the door. In this way, the door lock has been repaired! The company reminds: the master answers how to solve the problem of lock broken. 1 in the fifth step, we need to pay attention to fixing the bolt and lock cylinder in the middle of the lock body first, and then fastening the bolts on both sides of the lock body. 2. Pay attention to the direction of the locking tongue of the lock body. If there is a mistake, it needs to be removed and reinstalled. If the lock is broken, you can first see what causes it. You can use the unlocking skills provided by the company. If you can't, you can ask the unlocking company for help