xantrex inverter schematic

[Jim Hardesty]

I installed a Xantrex XM 1800 inverter it's worked fine for 5 seasons.  Now sometimes I suspect the automatic switching solenoid doesn't engage when I turn on the inverter (outlets) from the shore power and I get no power.  I looked for a schematic and can't find one.  Would like to see one before I just crack the case and look.  Does anyone have a schematic?  Or any other suggestions? 
Thanks,
Jim