asked Apr 3, 2008 at 2:35pm
Epson Epson Stylus Color 740

Epson SC 740 doesn't print; print head not clogged

I think I've tried everything I could find described in these forums, and still am getting no printing at all. Hopefully someone can help:

I'm trying to fix a friend's Epson Stylus Color 740. Before I started working on it, it was producing very light black printing (color was hardly ever used). Before understanding the clogging issues of Epson printers, I just replaced the cartridges with new ones. But, after that - no output at all. No errors, it goes through all the normal printing motions, but no output at when I run the Epson utility's nozzle check.

Since then:

I tried different cartridges - no change.

Cleaned the print heads (both with ink-cleaner soaked pad under the print head, and by running ink cleaner through the heads from above) - ink is definitely flowing through the heads.

I verified that the heads are not clogged, and that the charge/clean/vacuum system, by flushing the pad in the cap assembly (where the print head rests) with water till it was white, and then running a cleaning cycle - all ink colors from the print head are flowing into the cap assembly during a cleaning cycle, turning the felt pad black plus RGB in spots.

Any ideas of anything else I can try? All I can think of is that I somehow fried the print head during the initial cartridge change, but that seems unlikely.

Is there a service utility that will give more status info? The SSC utility (referenced elsewhere in the forums) isn't of help - couldn't find anything in it that told me anything I don't already know.


If you are 100\% sure the print head is not clogged and the pump is working then it would point to the main board (or fuse on main board) or the print head itself.
by unknown on Apr 4, 2008 at 12:01am Add comment