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The spilled cleaner (what kind was it?) may have left a deposit of varnish-like material on the head.
Or perhaps it got into the head, then dried some, but cause the head to clog up by reaction with the ink in it.
The head may be damaged... but you have changed it. Was the printer On at the time? if so, it may have gotten deep enough to have ruined some circuitry also... so how *much* cleaner was it? and was the printer On at the time of the spill?
If the spilled fluid was moderate or a large amount, then dry it out some more! 2 more days in low humidity warm place, if possible. With abundant-enough ventilation, if not exact winds blowing, and while unplugged from power.
What are the exact symptoms of the printer not working, or not printing, etc? does it at least feed through some pages?
I may have more suggestions by and by.