We have an Epson 3880 (about 2 years old), it unfortunately sat unused for a two months during the summer break. I brought it back up with few cleaning cycle with all nozzles firing well. After few days of use M color and few others would need cleaning cycle to clear missing patterns (nozzle check pattern). This would happen more often, and now M color is completely blocked (all other color is fine). When I print a nozzle check pattern, I would see few faint (crooked) lines of Cyan? (not sure it is C or LC). I have done the steps 1-4 below to resolve the problem without success. When I was doing the step 4, Install a cart filled with PiezoFlush into the M channel and printing thru QTR calibration Mode to purge ink and fill the line with PiezoFlush, there was a page of banding lines of Cyan? and trailed off to blank page (I suspect because of the blockage the PiezoFlush is not getting to the nozzle).
I'm willing and interested in doing the step 5. You stated that IJM does not support or provide instructions, is there any other resource that out there that I can reference?
There's a few things you can do (I will list all possible solutions, including things you may have already done): 1. Clean the capping station, wiper blade and bottom of the print head with PiezoFlush by following our instructions, 2. Do a few regular cleaning cycles, or a Power Clean cycle, 3. Print pure black ink using the QTR Calibration Mode (instructions for doing this can be found in the Articles> Product Manuals and Instructions section of this forum), 4. Install a cart filled with PiezoFlush into the black channel and printing thru QTR calibration Mode to purge ink and fill the line with PiezoFlush, until the black position prints pink on the nozzle check, then let PiezoFlush sit in the printer for like 24 hours) to have time to work it's magic, do another cleaning cycle or two, and print a nozzle check to see if the nozzle is printing. 5. Not something we support or provide instructions for doing, but I would personally do to our own printer, and some technically skilled customers could do: disconnect the dampers from the print head and use our print head cleaning kit to flush out the print head channel.