I purchased a complete set of refillable cartridges and ink for my Epson 4900.
I’ve started to use the cartridges only now as the OEM cartridges run out. I loaded the cyan cartridge and the printer recognizes a full cyan cartridge. However, no cyan prints. Numerous power cleans were ineffective. The nozzle check is good for all colors except cyan, which is blank. I'm guessing it's either a bad cartridge or air in the line because the head was fine very recently with an OEM cartridge and clogged nozzles show as gaps. To purge suspected air in the line I have used the QTR print tool to flush the cyan ink through, but no luck.
The other option I read here is to use the 4900 Adjustment Program to run an initial fill. I purchased it but am unable to use it because it runs only under Windows XP. Before I go through great lengths to follow that route, I'm wondering if it's pointless given the QTR channel isolation test results. Should I buy an Epson Cyan cartridge and see if it works? Unfortunately my prior OEM Cyan cartridge has a bad chip and is no longer recognized by the printer. (The same was true of magenta, but the refillable magenta cartridge is now working fine.)
After filling the cartridge, I primed it, got ink in the syringe and removed the vent hole stopper before inserting the cartridge in the printer.
I’m wondering if the problem is that I have a defective cartridge.