R1900 clog fixed!

I finally fixed a nasty clog in both blacks brought on by the humidity drop here.  80% water 10% amonia, 10% isopropryl alcohol.  Fold paper towels into a fat strip and slip under the carriage   soak the towel and sit the carriage over it overnight.  Then run the same mix made with WARM WATER through empty cartridges in three prints of the black page.  It really worked.

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JAWilson