SureColor P800 Chip Decoder & Refillable Ink Cartridge Instructions

Go Here for Chipless Instructions

Please read these instructions thoroughly before attempting to modify your P800 with this Chip Decoder. This system allows you to use third party ink in your SC-P800 US-Model printer. It will work for North America, South America, Central America and EU models. This chip decoder bypasses the lock that is found inside of the ink cartridge board on the printer by simply bypassing the entire ink board. By doing this, the chips on your cartridge will not be read at all. It is important to correctly install your cartridges in the right ink slots because the printer will not throw an error if a cartridge is installed in the wrong slot. After you have installed the chip decoder, we recommend you switch all of your Epson OEM cartridges over to refillable cartridges at once. This way you can ensure that you can see and top-off your ink levels on all cartridges each time you need to hit the reset button on the decoder board. 

Video Instructions (skip to view the written ones):


Chip Decoder Installation:

  1. First, make sure that your printer is running properly and is printing with all channels and nozzles.

  2. Place the P800 on a work surface with access to the back of the printer. Make sure the printer is unplugged.

  3. Unscrew the 5 black screws as indicated and pull the lower back cover off.

    Photograph of the Back of the P800 Printer showing where to unscrew.

  4. Unscrew the 4 silver screws as indicated.

    Photograph of the Back of the P800 Printer showing where to unscrew after first cover is off.

  5. Remove the tape from the ribbon cables on the left and place this tape to the side.

  6. Gently pull out the back tray. It will not come out all the way due to some wires. Keep the right side in more than the left side. This will allow the left side to angle out.

  7. On the left of the motherboard, pull out the ribbon cables marked  CN5, CN4, CN63, CN78, CN77, and CN76.

    Remove Cables from the Motherboard of the P800 printer

  8. Tape these cables back to make room to work.

  9. Plug the cable labeled CN76 provided with your product into the motherboard port labeled CN76. It does not matter which end of the cable you choose. The silver contacts should be face up (facing the front of the printer when the cable is secure.)

    Arrows showing where to plug ribbon cables into P800 printer

  10. These cables can be very tricky to place correctly. Do not touch the metal contacts. Carefully guide the cable to the lip of the port and then gently push in. The cable can be bent slightly (at a 90 degree angle) to give you fingers leverage to push the metal contacts all the way it. They will make a dull “thud” and level off when they are all the way in. Do not fray the cable.

  11. Plug in the cables labeled CN77 and CN78 the same way.

  12. Tuck the three un-used ribbon cables back, and out of the way, and reconnect the 3 cables (CN63, CN4, and CN5) back into their ports.

  13. Slide the drawer back into place until it is snug and replace the tape back to it’s original position.

  14. Plug the other ends of the ribbon cables (CN78, CN77, and CN76) into the corresponding cable ports on the chip decoder (as labeled on the chip decoder board). The metal contacts on the ribbon cables should be facing down.

    Plug the other ends of the ribbon cables (CN78, CN77, and CN76) into the corresponding cable ports

  15. Replace the 4 silver screws that we removed earlier.

  16. Snap the back cover back into place leaving the chip decoder board (and cables) hanging out below.

  17. Replace the black screws removed earlier.

  18. Take the stick velcro that is included with your kit and velcro your chip decoder to the back of your printer (the power port should be on the top left).

  19. Plug in the chip decoder into a surge protector.

    Plug in the chip decoder into a surge protector.

Using the Chip Decoder:

  1. Install your ink cartridges (as shown in the next section) and turn on your printer.

  2. If all was installed correctly, your printer should start as normal and show 100% full ink cartridges. During the course of normal printing, your cartridges will begin to indicate lower levels. When one cartridge reads empty, open the cartridge bay and top off all your cartridges with ink. With the ink bay still open, hit the reset button on the chip decoder ONCE. When you push the reset button, you want to hold it down for about 1/2 to 1 second. Then close the cover bay and all cartridges will be reset to full.

  3. You have thirty resets on the chip decoder.

Cartridge Instructions:

Please read these instructions thoroughly before attempting to fill, refill or use refillable cartridges in your Epson SC-P800 printer. On the P800 these cartridges should be installed all at once (not one at a time like on the 3800 and 3880 models). NOTE: With a chip-decoder installed, the P800 will not use the chips on your cartridges. There is no need to do anything with the chips. Keep them in place. Although the cartridges are labeled for 3800 and 3880 printers, they will work in your P800.


  1. Before beginning, you should have one or more refillable carts, 60ml slip-tip syringe, blunt tip needle and plastic priming tip. Keep the 38xx control chips in the cartridge (even though they are not needed). If no chip is present, the cartridge can damage the sensor wires inside of the printer and make it unable to operate without a chip decoder.

  2. If this is a new P800 printer, please test your printer first! It is possible to receive a new printer that has one or more misfiring nozzles or some other defect. Make sure to run nozzle checks and perform some print tests to carefully examine print quality. Look for striations or thin lines in the images, which if all nozzles are firing, may indicate head alignment problems. This test will insure that you are installing the refillable carts in a printer which is in top working condition. Failure to test your printer first, may waste time and ink chasing down problems that are related to printer quality.

  3. Filling cartridges with ink: Each cartridge has a colored rubber plug with pull tab on the back side- this is the ink fill hole. Place a cartridge upright with fill hole up, then remove the plug. Always shake ink bottles before filling or refilling cartridges to ensure pigment is in suspension for consistent output. Check to make sure the ink bottle and cartridge color position match before filling carts. Using a syringe with long blunt tip needle attached, draw 60ml of ink into the syringe and inject into the cartridge, then draw and inject another 10ml. (70ml fills the cartridge). Do NOT overfill cartridges. There MUST be a small air gap at the top of the cartridge for proper function. 

  4. Prime cartridge with ink: After filling a cartridge with ink and reinserting the fill hole plug, place the cartridge upright as shown below. Remove the orange vent plug from the air inlet port if it is attached. With priming tip attached to the slip-tip syringe, insert the priming tip straight into the exit valve (ink outlet) to depress the spring and open the valve (the priming tip must be pushed thru the plastic membrane covering the exit valve- do NOT remove the plastic membrane). Pull the syringe plunger to fill the exit channel & valve until a few drops of ink enter the syringe (1mL to 2mL). When ink starts flowing into the syringe, pull the syringe and priming tip straight out of the cartridge. This will close and seal the exit valve. The cart is primed and ready to be installed into your printer. Syringes and blunt needles can be rinsed with distilled water and air dried for future use. Remember: If your cart has an orange plug over the air inlet point, REMOVE it before priming or installing the cartridge. 

    38xx and P8xx refillable cartridge priming

    NOTE: Unprimed cartridges will not have ink in the exit channel, indicated by arrows in the photo below/left. The photo below/right shows a primed cartridge with ink in both chambers. The circle and rectangle chambers marked below MUST be at least 1/2 filled with ink for proper ink flow. 

    Fill hole primed

  5. Installing cartridges in the printer: Open the cartridge bay door, remove Epson cartridge(s) and install refillable cart(s) into printer, then close the cartridge bay door. The printer should now pressurize carts. When it stops, the green power light should be on and  “ready” displayed on the printer LCD panel. If you see a red light or cartridge error on the LCD at this point, there may be a power or connection problem with the chip decoder. Turn the power off on the printer, unplug the printer, and boot it back up.

  6. If you install or replace one cartridge at a time, print a nozzle check to make sure all positions are fully printing. If there are missing nozzles or positions at this time, let the printer sit for 1-3 hours, then do 1-2 cleaning cycles before printing another nozzle check. NOTE: If installing Piezography inks, we recommend to print purge sheets with this printer. Ensure that all your nozzles are firing and then follow the instructions for purging your ink lines: Note: Piezography on the P800 requires the Piezography Driver which is in development as of November 2017. Go to for updated information on this driver.

These cartridges can be refilled & reused MANY times, though for best results we recommend replacing after about a year of use.

  1. Have ink, blunt needles and syringes ready on a workspace before removing carts from printer to refill.

  2. Remove colored plug from cartridge fill hole and leave air vent hole OPEN. Draw 15ml ink into the syringe. Leaving needle attached to syringe, insert needle tip into cartridge fill hole. Hold cartridge at an angle with fill hole up then gently push syringe plunger to slowly refill cartridge with ink. Tap side of cartridge with your knuckle to release trapped air and allow ink to settle then continue filling.

  3. Once cartridge is refilled with ink, remove needle and reinsert fill hole plug, then tap cart exit valve down on a folded paper towel a few times and reinstall into pinter. After installing refilled carts into the printer, wait 10-15 minutes for ink to settle. Always print a nozzle check after refilling carts before printing images.

Refilling Instructions:

When one cartridge indicates that it is empty, open the cartridge bay and take out the empty cartridge. Top it off. Then top off ALL the other cartridges. Hit the reset button on the chip decoder and then place the cartridges back into the printer. Then put the ink cover back down.

In general, we recommend that you top off your cartridges before ink level reaches 1/2” from the bottom for proper ink flow. Keep an eye on the cartridges by pulling out a cartridge and visually gauging the level every few times you go to print. You do not have to reset the ink decoder every time you top off the cartridges this way. Just remember to top off the cartridges every time you DO have to hit the reset button.

As long as the circle and rectangle chambers indicated above are at least 1/2 filled with ink, the cartridge does not need to be re-primed. If the chambers are low or empty, the cartridge must be re-primed to refill the exit channel with ink. 

To refill cartridges- place the cartridge fill hole up, then remove the fill hole plug and inject ink using the syringe with blunt tip needle attached. Do NOT overfill cartridges. You MUST allow for a small air gap at the top for proper function. Always shake ink bottles before filling or refilling cartridges to ensure pigment is in suspension. For consistent output, always confirm that the ink bottle and cartridge color position match before filling or refilling. This is important for LC and VLM ink.

PiezoFlush & Repair Instructions:

To do full ink line flushes (called “initial fills”) with PiezoFlush to clear ink lines, re-prime dampers, and unclog nozzles, you can use the Epson Adjustment Program for the P800 available at 2manuals (dot) com.  You will need a full set of empty cartridges dedicated to the PiezoFlush liquid. Fill the cartridges with PiezoFlush just the way you wold fill them with ink. Install the flush cartridges and do a full “initial fill” of the printer with the adjustment program. Let the printer sit for 48hrs, do one normal clean, and then do a nozzle check. PiezoFlush is useful for a lot of think including long-term printer storage. For more information on PiezoFlush go to 

For Piezography Users:

Please go to the top menu item labeled "Support" got to "Piezography Instructions" and click on your printer under the "Conversions" heading.

Troubleshooting & Helpful Information:

Pigment ink settles if not regularly agitated. 

To keep the ink printing at full density, gently shake the cartridges every 1-2 weeks to keep the pigment in solution. If the printer is not used for two weeks or more, shake the ink cartridges then do 3-4 cleaning cycles. This will purge the settled ink from the printer’s internal ink lines and fill with ink from the shaken cartridges. It is NOT good to leave pigment ink installed in a printer that will sit unused for an extended time. Use PiezoFlush for that.

Use the printer on a regular basis for best function.  

To keep ink moving thru the ink lines and the head moist, print a small image or do a cleaning cycle every week if the printer is not used regularly. It is NOT recommended to leave pigment ink installed in a printer that will not be used for several months at a time- see below for additional information on flushing and storing your printer. 

Long term storage of printer.  

If you do not plan to use a printer for an extended period of time, it is best to remove ink cartridges, install a set of flush cartridges and flush ink from the print head by doing 5-6 cleaning cycles, before turning it off for safe storage. Store unused cartridges upright in a sealed plastic bag to avoid drying. 

Monitor and maintain humidity levels between 40-60% in the printing area.  

This is Epson’s recommendation. Both low and high humidity can cause problems with the printer, ink and paper.

Cartridges unrecognized.  

If your printer displays empty cartridge boxes on the LCD (even after reset on the chip decoder) or other strange errors, there may be a faulty connection or other error with your Chip Decoder. Remove the chip decoder, re-install the epson ribbon cables, and put the Epson OEM cartridges back into the printer to debug.

Keep capping station clean to keep the print head clean and printing well.  

Cleaning procedures can be found on the Inkjetmall technical support forum: Depending on frequency of printing, the capping station should be cleaned at least once a month to help keep the print head clean and working well.  

ConeColor ICC profiles can be downloaded from  

Custom profiles can be made by InkjetMall if you wish to use a paper that has not already been profiled. 

** If you continue having problems or have additional questions, please refer to our InkjetMall Support Forum, which contains lots of helpful information: