A quick lesson in Epson design.
All Epson printers have permanent ink heads. They do not come out nor
are they replaced.
They also have several ink cartridges, which are just plastic boxes
which contain ink. In the case of the 740 we are speaking of two boxes,
one black, and one with three colors, Cyan, Magenta and Yellow.
Replacing the cartridge will probably not resolve a head clog which is
what your printer probably has.
If you email me, I will send you a manual which explains how to unclog
your printer's heads.
The manual is free, and you will not be spammed by me, as I have nothing
to sell you, and I do not trade, sell or give away my email lists.
There is a way to remove an "outdated" cartridge, but that probably will
not resolve your issue.
Email me at:
e-printerhelp(at)mvps(dot)org
(at) = @
(dot) = .
Art