MIWA PSDN.QDJ695 Lost key, Unlocking the entrance door

"Lost key, Unlocking the entrance door"

Judging from the characteristics of the handle shape, it looks like the usual USHIN-SHOWA QDJ-695 series. It seems that only the upper main lock was used, and a sticker was attached to the lower cylinder.

If I proceed with the work with a dedicated tool, the thumbturn looks like a large thumbturn. If I apply a little force, I will hear a sound that rotates about 30 degrees. After that, it was unlocked as usual, and the work was completed.