Dx8400 printer, red ink not working, fitted new cartridges blue yellow and black work but no red, done all the print head cleaning and nozzle checks but no luck

YOU HAVE TO CHANGE THE INK CARTRIDGE BECAUSE IS DRY
WHEN YOU CHANGE IT THE PRINTER WILL PRINT GRAYSCALE

You may have put the wrong color cartridge in the wrong print cartridge position.

I have an epson dx8400 printer and changed all the cartridges but it still does not recognise the black ink. Any suggestions

On your nozzle check, do you see the grid at the top (indicated by red arrow in picture below)? If you don't see this, your pigment black nozzles aren't working. The black bar at the bottom is from the dye black nozzles (small black tank). You may have either plugged nozzles or a bad print head.

Did yellow and magenta print OK before the previous cartridges ran out? If so, it looks like your new cartridges are not working properly. Try another yellow and magenta cartridge - you can re-use the previous cartridges if they turn out not to be faulty. If new cartridges don't solve the problem, you can try soaking the print head, in case you have nozzles blocked with dried ink for some reason.

Turn the printer on, and as soon as the print head moves out of its parking position, pull the power cord out of the back, or turn the printer off at the mains. You may now carefully move the print head by hand over to the left hand side out of the way. Look inside the print head parking area on the right and you will see a small rubber cup that comes up to cover the print nozzles when the head is parked (to stop it drying out). Use a syringe or dropper to fill this cup with head cleaning fluid or distilled water. DO NOT USE TAP WATER. Carefully push the print head by hand fully into its parking position so that the cup full of fluid comes up over the print head. Do not turn the printer on at any stage in this process. Leave this for at least 24 hours, then turn the printer on and try a head clean/nozzle check again. If you get any magenta/yellow ink on the nozzle check, then there is hope! Repeat the head clean/nozzle check process 2 or 3 times, but not more. Leave for 24 hours for any air bubbles to disperse. If nothing, repeat the soak process once more. If still nothing, post a new comment detailing what you have done and the results.

The printer colour cartridges are magenta, cyan and yellow. The printer prints "red" by mixing magenta and yellow ink. So, if you only get yellow when you print red, it means you aren't getting any magenta ink on the paper.

Have you tried a cleaning cycle? If not, try one (right click the little printer icon in the bottom right corner of the screen and select head clean). Now run a nozzle check (right click the little printer icon in the bottom right corner of the screen and select nozzle check). Is there any sign of magenta ink on the paper. Try up to three cleaning cycles. If ink is now flowing, but not yet perfectly, don't carry out any more cleaning cycles. Just leave the printer for 24 hours (to allow any air in the print head to disperse). Then repeat the cleaning cycle/wait process. It may take a while to restore a perfect nozzle check print.

If you have already done lots of head cleans with no result, are you sure you have a good magenta ink cartridge? To eliminate the possibility of a faulty cartridge, buy a new set of compatibles on E-Bay - they're very cheap. You can always re-use the old one later if it turns out it is OK.

If none of the above works, then you may have blocked magenta print head nozzles. You can try soaking the print heads for 24 hours (or more), as follows. Turn the printer on, and as soon as the print head moves out of its parking position, pull the power cord out of the back, or turn the printer off at the mains. You may now carefully move the print head by hand over to the left hand side out of the way. Look inside the print head parking area on the right and you will see a small rubber cup that comes up to cover the print nozzles when the head is parked (to stop it drying out). Use a syringe or dropper to fill this cup with head cleaning fluid or distilled water. DO NOT USE TAP WATER. Carefully push the print head by hand fully into its parking position so that the cup full of fluid
comes up over the print head. Do not turn the printer on at any stage in this process. Leave this for at least 24 hours, then turn the printer on and try a head clean/nozzle check again. If you get any magenta ink on the nozzle check, then there is hope! Repeat the process until you get a full magenta nozzle check. If nothing, repeat the process once more.

If still nothing, post a new comment detailing what you have done and the results.

Are you confident the new cartridges are full and in-date? Can you confirm that the old cartridges were not removed until immediately before the new cartridge was installed. Did you remove the yellow tape from the new cartridges before you installed them? Were the cartridges changed properly such that an ink charging cycle occurred. Have you carried out any head cleaning cycles? If not, do it. Have you done a nozzle check print? If not, do it. Any sign of black ink? Yes, but not perfect? If so do a couple more head cleans and nozzle checks. If still not perfect, let it rest for 24 hours to disperse air bubbles. Then repeat.

If you have already done lots of head cleans with no result, and you're sure you have good ink cartridges properly installed, then you can try soaking the print heads for 24 hours (or more), as follows. Turn the printer on, and as soon as the print head moves pull the power cord out of the back, or turn the printer off at the mains. You may now carefully move the print head by hand over to the left hand side out of the way. Look inside the print head parking area on the right and you will see a small rubber cup that comes up to cover the print nozzles when the head is parked (to stop it drying out). Use a syringe or dropper to fill this cup with head cleaning fluid or distilled water. DO NOT USE TAP WATER. Carefully push the print head fully into its parking position so that the cup full of fluid comes up over the print head. Leave this for at least 24 hours, then try a head clean/nozzle check again. If still nothing, post a new comment detailing what you have done and the results.

Are you confident the new cartridge is full and in-date? Can you confirm that the old cartridge was not removed until immediately before the new cartridge was installed? Did you remove the yellow tape from the new cartridge before you installed it? Was the black cartridge change properly completed such that an ink charging cycle occurred? Have you carried out any head cleaning cycles? If not, do it. Have you done a nozzle check print? If not, do it. Any sign of black ink? Yes, but not perfect? If not, do a couple more head cleans and nozzle checks. If still not perfect, let it rest for 24 hours to disperse air bubbles. Then repeat.

If you have already done lots of head cleans with no result, and you're sure you have a good ink cartridge properly installed, then there are other things we can try - assuming other solutions haven't worked either. Report back on my queries etc.

Are you confident the new cartridges are full and in-date? Can you confirm that the old cartridges were not removed until immediately before the new cartridge was installed. Did you remove the yellow tape from the new cartridges before you installed them? Were the cartridges changed properly such that an ink charging cycle occurred. Have you carried out any head cleaning cycles? If not, do it. Have you done a nozzle check print? If not, do it. Any sign of ink? Yes, but not perfect cyan-magenta-yellow and black? If so do a couple more head cleans and nozzle checks. If still not perfect, let it rest for 24 hours to disperse air bubbles. Then repeat.

If you have already done lots of head cleans with no result, and you're sure you have good ink cartridges properly installed, then you can try soaking the print heads for 24 hours (or more), as follows. Turn the printer on, and as soon as the print head moves pull the power cord out of the back, or turn the printer off at the mains. You may now carefully move the print head by hand over to the left hand side out of the way. Look inside the print head
parking area on the right and you will see a small rubber cup that comes up to cover the print nozzles when the head is parked (to stop it drying out). Use a syringe or dropper to fill this cup with head cleaning fluid or distilled water. DO NOT USE TAP WATER. Carefully push the print head fully into its parking position so that the cup full of fluid comes up over the print head. Leave this for at least 24 hours, then try a head clean/nozzle check again. If still nothing, post a new comment detailing what you have done and the results.

hi this is nichu, you have done everything correct but the ink is low in your catridges refill it or purchase a new one.