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Have you looked in this service manual for that model series? admittedly it does not seem to have many diagrams...:
Which blue wire is this? or, where does the end that is still attached lead?
OK. I am examining those pictures... thank you for posting them.
But in which picture is a blue wire disconnected? I did not see any such.
The 'wide cylinders' are probably capacitors, esp. if they are blue.
What is L1 ?
'L' usually means, on circuit boards, an inductor. These are also known (esp. in automobiles) as 'coils'. They are generally cylindrical and have two leads, and are inductive somewhat in the manner of a transformer winding, only without the opposite winding transformers almost always have, and often without any 'core' material.
Is the L1 connection adjacent to and traceable to an inductor? picture?
For an inductor to have an open end is unlikely. So... you might be on the track of something, *if* we can identify by tracing, the component the blue wire still leads to and is connected to.
I don't have a schematic, and I do not know where to find one.
I cannot identify the blue wire from an authoritative source.
You will have to tell me what L1 is or attached to in the way of a component, please.