Re: Servis Easi Logic 1500 running out of sequence.
It sounds like a PCB which, given it’s a Servis, isn’t exactly a shock. 😉
However there’s only one way to know for sure, replace it and see what happens.
It could, I guess, be something else but there’s about an 85-90{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} probability that it’s the module. There is no way to be 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} sure of it I’m afraid beyond replacement.
Let me put it this way, I’d be surprised if the module wasn’t the problem.
HTH
K.