July 2022
Mul-T-Lock knob lock cylinder cleaning repair
``I can't lock or unlock the door because the key won't stick in it.'' About a week ago, it became difficult for the key to stick in the door, but I had managed to use it until now. I was told that it wasn't feeling well and wanted me to check it out. I immediately felt something was wrong with the situation at the inspection. (This is a tangent […]
Mysterious IC card electronic lock PM640, malfunction repair of unknown manufacturer
``This morning it suddenly stopped working, so I would like to have it checked.'' It was an electronic lock (IC card lock) that I had never seen before. There are no markings or instructions. (Maybe made in Korea?) I couldn't even search on the web. Normal operation is to press the button and switch the card key […]
Korean-made GuarDoor SHS-1221 Unlocking electronic lock
``Unlocking the entrance door with an electronic lock that has no door scope or door post.'' While moving around, I searched by property name to see if there was any detailed information, and found that the electronic lock was a real lock, ``GuarDoor'' from Samsung Electronics, South Korea. It turned out to be OEM SHS-1221 […]
Malfunction of Sha-Maison cylinder Special unlocking and disassembly cleaning
``I have the key, but the cylinder won't turn.'' Based on what I was told, I thought that the problem would usually be resolved by cleaning the cylinder, but when I looked at the door in question, (Oops! It's Charmaison! The door scope was directly above it. ) However, no matter what I do to proceed with the work, I […]
PR.LA entrancenormal thumbturn unlocking
"Unlocking the entrance door due to loss" This is a case witnessed by the police. A female police officer who seems to appear in "Hakodume".While talking about the judgment criteria for ignoring the yellow light, she completed the work with normal thumbturn unlocking.
