I know how to up date the 4430 to 5530 does anyone know how to updat the 2530 and 3530 the same way?

That sounds interesting. How about sharing that with the rest of us.

That sounds very interesting. How about sharing the info with the rest of us.

I haven’t looked at a machine but looking in the service manual, connector 1 pins 3 and 4 on the power source PCB are unaccounted for.