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iMac and Epson 740 Printer Problem

My iMac has been printing perfectly through the 740 for over a year. We changed ink cartridges and the printing quality is awful. We tried cleaning and adjusting the heads via the control panel and now the test page barely has any image on it. Each time we printed the test page it got lighter and lighter, now it prints just a few very light lines. The ink quantity icon shows both cartridges are nearly full.  Epson's helpline was not helpful. It's 2-months out of warranty. Have you any tips or suggestions? Thanks.
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TedH17
Asked:
TedH17
1 Solution
 
briancassinCommented:
If the test page got lighter and lighter as you printed it sounds like there is a problem with 1 of 3 things

1. the pump (if the unit uses individual cartridges 4 ink tanks)

2. the printhead (if the unit uses 4 ink tanks)

3. If you only have two cartridges one with 3 colors and another one with just black then you can try taking a damp paper towel to the end of the cartridge and dab it or gently wipe it... then try running through 3 consecutive cleanings also make sure you took the tape off of the cartridge if that does not help then most likely you ran into a defective cartridge. I would return the cartridge and get it from someplace else you may run into a bad lot of them which means a full shipment of cartridges they have may be bad or you could try another from the same store

if it is not the 2 cartridge system

then in the end of the ink tanks there should be a foam pad and an air hole take a paper clip to the small airhole to clear it then squeeze in and out on the cartridge till ink comes up through the larger hole. also take the printhead (what the tanks sit in ) and remove it (if removeable) and soak it in warm water for 30 minutes then completely dry it put the ink tanks back in it and run through 3 cleaning cycles if it still does not print anything i would try a printhead first if that does not fix it then it is probably the pump


NOTE: the two cartridge system does not have a pump in the machine the cartridge works by being heated up and that causes pressure in the cartridge which then in turn pushes the ink out onto the paper, so if you have these cartridges your pump could not go bad because there is not one and the printhead is self contained on the cartridges, so if the printhead is bad the cartridge is bad  
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