I am recapping the IIcx today. I didn't see polarity markings on these two caps. I would assume they follow the others but want to be sure so I don't blow up anything.
Usually the caps are all in the same relative direction, but on my board those two are opposite the ones above. So based on your photo, left is positive.
Now I must ask this: On uniserver's capacitor reference, there are only 3 47uF capacitors in this area, here there are 4. I am guessing this is a different revision board?