WEST333 Sliding door lock malfunction repair

"The door is no longer locked, so I'd like to have it repaired."

It was a house being renovated for rent.After cleaning it, I tried to lock it when I tried to go home, but it wasn't locked anymore, so I asked for it to be repaired.

The sliding door lock seems to be SHIN-NIKKEI, but the model was unknown.There was a WEST333 sliding door lock that was supposedly put on by some contractor.

When I checked, the door gap (GAP) was larger than expected.Because the door itself was off the rail as well.I fixed it by putting it back on the rails, but it seems to recur.Apparently, the door car needs to be checked next.

When I removed the door, a lot of dust came out.It seemed like I was riding on this dust.The door car seems to be no problem.

After re-installing the door in place and checking, it will not lock this time.It seems that the outdoor unit and the indoor unit are out of alignment.Apparently, it seems that the work is defective due to lack of confirmation by the installer.

I readjusted the alignment and confirmed normal operation.Was there any reason why I finished the work without making the final adjustments?I was surprised that there are various vendors.