Digital BW, The Print

I've had my 1400 with MIS supplied Eboni-6 carts since October.  Last night I started having some banding.  I had printed half a dozen good prints the night before.  After a couple of cleaning cycles failed to solve the issue I tried Windex on a folded paper towel under the heads.  At first only one or two grays printed so I increased the Windex-pad thickness and let it soak for bout 4 hours.  There was lots of ink on the pad when I removed it.  I got one very streaky, extremely light print, then nothing.  No nozzles seem to be firing at all even after two cleaning cycles.  I'm using the stock Epson driver on OSx 10.6 for what its worth.

Did I kill the printer?  Right now I'm letting it sit while I'm at work.

Thanks,

Mike Durling