I got a problem with the FC 5073 expansion unit. It has an error code of 10217403. It says that the AC module is the failing ITEM. So, I replaced the AC module (2x). The same error occurred. And I was thinking is the SPCN card in the system unit is the problem.
What do you think is the best solution? Thanks and best regards.
Anyways, does anyone knows where is the +12V dc regulator