Need assistance with my Samsung WW12H8420EW/ST washing machine. Specifically, I'm looking for the PCB schematic and a list of error codes that extend beyond what's provided in the user manual. The issue began after I attempted a weight calibration on the machine. Prior to this, the machine was functioning perfectly. However, post-calibration, the door switch seems to have stopped working. I've tested the door switch outside of the machine and it appears to be in good working order, leading me to suspect there might be an error in the control code. Additionally, I've managed to find a wiring harness layout for a Samsung front-loading machine, which makes me wonder if there's a specific start-up sequence for new machines. I'm also seeking any and all service codes that could help in diagnosing and resolving this issue.