USHIN-SHOWA MEISSNER (meissner) card key lock repair of locking failure

"Can't lock with card key"

It was a declaration that the card key could not be locked.There was a MEISSNER (meissner) lock attached to the USHIN-SHOWA MLA lock case.

Possible causes include poor magnetism in the card key or malfunction due to dirt on the magnet part of the reader.

While looking for the cause while disassembling, it turned out that it was a malfunction of the reader part and the link mechanism part (crab scissors mechanism) of the main body of MEISSNER.No damage was found, so it seems to be a malfunction due to dirt. Cleaning and lubricating with CRC-336 oil spray improved this time.