I just took my 9800 out of storage, it was sitting for four months with Piezoflush in the lines. I ran a nozzle check, saw some blockage on one ink so did a cleaning, got a perfect (pink) nozzle check. Then I reinstalled the Epson ink carts, did three Power Cleanings, ran a nozzle check, which came out perfect. Then I followed the standard procedure to switch from Photo Black to Matte Black, using the Espon supplied kit. Now when I print a nozzle check it is totally blank — it seems that the head isn’t sending any ink at all to the paper. Same if I try to print an image: the printer will run as if it’s printing, but the paper remains blank.
What am I doing wrong?