I changed the black cartridge, cleaned head several times, but still the top of the black text will not print.

SOURCE: Cannot print in black only

It is not wise to leave the cartridges empty, causes permanent print-head damage on the empty color area. However, if you want to use the other color, say "black", bypassing the cartridge check is simply resetting the counter of the printer... download the utility file "sscserve.exe" you can search it on the internet. Install it then choose your printer on its list box, then by right-clicking on the printer icon of the utility at the bottom right of your window... you should be able to see what you need. Happy printing!!!

SOURCE: My epson sx515w wont print black

Hi,
Please clean the print head to resolve the issue.Open the link below then click on any of the link to get the instructions as per your OS name like Windows or MAC etc....


http://www.epson.co.uk/Store/Printers-and-All-in-Ones/Epson-Stylus-SX515W/Drivers-Support?target=article&extn=.html&articleId=1085

SOURCE: EPSON BX300F BLACK PRINT HEAD BLOCKED TRIED TO

If you've cleaned the heads, and swapped the cartridges then it doesn't sound too good.
if you do a google search for Epson Printer Repairers in google with your location so like Cambridge or whatever they'll need to take a look.
You could also check to see if its under warranty - put your serial number in here;
http://www.epson.co.uk/Explore-Epson/About-Epson/Technical-Services/Warranty-Checker/1227954741866

SOURCE: black will not print!

Hello.

Inkjet printers have the major disadvantage of having often having clogged print head cartridges that can be very annoying in the long run. Though advanced inkjets might possess their automatic print head cleaning process, this might not work every time. The problem might be because a layer of thick ink might have blocked the holes of the printer head.
There are some useful ways to get the printer's head clean without having to buy another cartridge.

Using a syringe and some alcohol to unblock the holes can also be very effective.
Step 1: Remove the cartridge from the computer
Step 2: With the syringe, take in some alcohol and put in some drops in the tiny hole where the ink runs from the ink cartridge to the head of the printer.
Step 3: When done, put the cartridge (only where the tiny holes are found) in some warm water. If some ink runs in the water, it means that the holes have been unblocked.
Step 4: Hence, let the alcohol act for 20 minutes on the ink before putting the cartridge back in the printer.
Step 5: Run some test prints before using the printer normally.

Note: I would suggest you to do an automatic head cleaning each time before any printing task. Hence it will reduce the risk of having the print heads blocked by dried ink.

Hope this helps.

SOURCE: my epson stylus cx6000 has stopped printing black.

Be sure you are using genuine epson ink. Epson printers are "smart" and will not allow generic ink to work properly. Even after you replace a generic with a genuine it may take several print outs and alignments to get it to print again.