"59.C0 Error Code" becomes "Front or Right Door Open Error Code"

[GoGetterMan]

I purchased an HP LaserJet Pro 500 Color MFP M570dn. It was shipped 810 miles. When I received the printer, it was damaged and all covered in Toner soot. Lesson: do not ship a Laser Printer with Toner Cartridges inside. So I cleaned it up inside and out using non-aerosol spray cleaner (such as Formula 409) with a rag for the outside and my air compressor blow gun set at 100 PSI for the inside. I replaced some covers and Tray 2. Then I turn it on only to get a "59.C0 Turn off the Turn on" Error Code. I read up on the 59.C0 Error Code and I see mention of the Developing Disengagement Motor aka Stepping Motor. As I keep myself busy, I replace the Developing Disengagement Motor. But now all that I see on the Control Panel is "Front or Right Door is Open" Error Message. I open and close both doors. I no longer see the 59.C0 Error Message on the Control Panel. Took it to a Repair Shop but they could not figure it out what is causing the Front or Right Door is open error message.

[Valsimot]

When installing DC controller make sure that connectors J100 and J118 are seated correctly. You probably missed on not connect properly, double check.