Epson Stylus CX6600
I just replaced all the ink and now it will only print red.

How to Identify and Fix Common printer Problems ?

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The ink levels may be low and you may need to refill the ink. Visually check the ink levels. Also make sure you filled the tanks with the correct colors of ink. After you print, the colors in your printout need time to set as the ink dries.
Clean the print head, if necessary. Make sure the paper size, orientation, and layout settings in your printer software are correct. Make sure your document does not contain blank pages. If your printer software has a Preview option, you can check for blank pages before you print and remove them, if necessary.
Even if you select Black/Grayscale or Grayscale in the printer software, some color ink is still being used. Epson printers contain a permanent print head that needs to be charged with all colors to work. Even when you are printing black text only, a small amount of color ink is used to keep the print head charged.
Clean the printheads: Sometimes the issue why you are unable to print in color is because our printheads are clogged with ink. Clean the printheads and then print a document to check if color printing works. Some printers also have in-built programs that can clean themselves so remember to check for that.
If your PC or the LCD screen on your printer is telling you that your ink cartridges are full but no ink is passing through to the paper, then it`s most likely that you are dealing with a clogged printhead. Blurry documents and images that appear faded are also signs that it`s time to remove the excess ink.
A printer`s heads, nozzles, and other components can become dirty or clogged, which could show up as white lines running across your page. Your printer may have a head-cleaning feature available through your device software located on your computer or from the control panel on the printer itself.
The printer will not operate if a black ink cartridge is expended or any cartridge is removed. If a color cartridge is expended, you may be able to continue printing temporarily with black ink. It`s best to always have extra cartridges on hand.
Printers that use two cartridges (one black, one tri-color) can print if one cartridge is empty. To continue printing, remove the empty cartridge from the printer. If a Single-cartridge mode message displays, select OK. If you are using the black cartridge, prints are in black and white (grayscale).
If your Epson printer is printing out faint images, skipping lines, or is streaking your image with lines, chances are you have a clogged nozzle–a common problem many users have with Epson printers. It`s unavoidable that print heads clog over time as small amounts of ink residue dry up and collect in the nozzles.
Inkjet printers work via subtractive color mixing. As different colors of ink are combined, each ink absorbs (subtracts) its characteristic colors and amounts of light. The light that is then reflected back to our eyes is what we see as different colors.
Color printing uses yellow, magenta, and cyan inks to produce various colors by subtractive mixing to give red, blue, and green. (Each color ink should be thought of as transmitting two of the additive primaries, which is the same as absorbing one of the additive primaries.)
The way colours are displayed on a computer monitor is by emitting light through combinations of red, green and blue LEDs (RGB). However, in digital print (eg. a desktop printer or commercial digital press) we generally see colours through light passing through dots of cyan, magenta, yellow and black ink (CMYK).
Trick the printer.

Low ink doesn`t mean no ink. Remove the cartridge, wipe it with a lint-free cloth and reinsert it. This process can fool your printer into “thinking” you`ve put in a new cartridge and may help it eke out a few more pages.

Partial prints are a common issue with printers and there are several main reasons it can occur: Problem with the print spooler (on Windows PCs) Overload of the GPU on later model Macs. Dodgy USB cord.
A printer printing lines on the page are normally caused by a blocked, dirty, or damaged print head. Blocked ink cartridge nozzles, or not removing protective seals correctly when you installed a new ink cartridge can also cause missing lines of print.
A: Yes. You can use the scanning feature without worrying if there is ink in the ink cartridges installed in the all-in-one printer. However, all of the genuine Epson ink cartridges must be installed, even if depleted of usable ink and the printer displays the replace cartridge message.
Can you print with one or two empty ink cartridges? The quick answer is: Yes, you can (if you own a printer model that allows it) — but you shouldn`t keep printing with an empty cartridge for too long.
The “four-color” in “four-color printing” refers to the four ink colors—cyan, magenta, yellow, and black (CMYK)—used in offset printing presses and many digital presses. These four colors are combined to make a wide range of colors.
Quality black printing requires both black and colour inks for depth and fullness. All colour printers are designed with this in mind.
When designing for a printed format, the best color profile to use is CMYK, which uses the base colors of Cyan, Magenta, Yellow, and Key (or Black). These colors are usually expressed as percentages of each base color, for example a deep plum color would be expressed like this: C=74 M=89 Y=27 K=13.
Epson printers are equipped with a status monitor utility that check the ink grade in the printer. This can be accessed from the printer drive, which can be reached from the start menu or home screen dashboard.
4-Color Process uses Cyan, Magenta, Yellow, and Black inks. When applied in successive layers, these four ink colors create a full color image. 4-Color Process is the most widely used method for printing full-color images.
Although printing processes have changed quite a bit since color printing was invented, generally color printers separate an image into three color components to deduce the amount of each of the three inks will be needed to create an accurate copy of the image being analyzed.
So why do printers use cyan, magenta, yellow, and black ink (CMYK)? CMYK is the most commonly used offset and digital color printing process. This is referred to as a 4 color printing process, and it can produce over 16,000 different color combinations.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

HP Color Laserjet 3800 problem when printing color
ANSWER : Do a cold reset

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Epson Stylus CX6600

My 2550n Color LaserJet does not want to print in color
ANSWER : That model had issues with the carousel solenoid sticking. That might explain why it works after you let it sit for 10 minutes. The solenoid gets hotter with use which causes the deteriorated foam on it to become sticky and hold down the release plate instead of letting it go. This allows the carousel to spin when it is supposed to stop for each color. The solenoid is located on the right side of the printer. If you open the lid, it is just behind the opening at the top right. You need to remove the top of the printer and scrape off the goo on top of the solenoid body. I put a piece of thin sticky backed felt to replace it. Other people use electrical tape.

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Epson Stylus CX6600

EPSON How to print in black when color ink is out?
ANSWER : Yup. Epson can suck my fat hairy toes. Spent a S#!$ load on a new black ink cartridge for it to still not work.

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Epson Stylus CX6600

color is not printing true
ANSWER : I changed all toners and drum and it is still doing it.

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Epson Stylus CX6600

Print file sent but no printing occurs
ANSWER : Been working on these since they first were released. Never seen a problem like yours. If it happens again, try doing an engine test, as it bypasses the formatter board. The engine test is located at the right side of the manual tray opening. Look for a hole in the side wall. Stick something like a paper clip into it to actuate the test button. It will then print a lined test page. If it does that, then it points to the formatter board as the cause of your problem.

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Epson Stylus CX6600

Need help for Epson Stylus color 3000 print head?
ANSWER : I need help changing the print head in my Epson 3000 – I have 2 printers – one will not stay in alignment and the other black ink is plugged and I have soaked it and cannot get it to budge.

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Epson Stylus CX6600

Printing Problems
ANSWER : http://www.fixyourownprinter.com/posts/34513

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Epson Stylus CX6600

when printing front and back, the front will print well but the back will fade
ANSWER : It happens because second side voltage is much higher and the board breaks. Are you getting this issue in auto duplex only, or same error you are getting when you print second side manually?

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Epson Stylus CX6600