Someone (not me, honestly) attempted to clean the LK channel of my 4900 converted to PiezoPro. However, the problem wasn’t a clog - the cartridge was empty! So, the ink was bled out of the line.
I refilled the cartridge and primed it, performed 2 cleanings, but haven’t been able to get the LK channel to read on my nozzle check.
Can anyone offer any suggestions on how I can fix this?