I have the same problem with the ink cartrige. it says the yellow is near empty. I replaced it twice with a new on and still says near empty. I have the 420cn. prior to this had the 420 it did the same problem with the black and I got so fed up just threw it out. It is definitely a sensor problem with the brother's all in one printers.
I do not know what was meant to put paper over the window. where is it located. Over all I like the brother printers but I will not buy a 3rd one because of the same problem.
This problem seems to be the same for all this family of printers. The solution is that each cartridge has optical window on it where the sensors sees the ink level. what u do is put a folded piece of paper over the window so the sensors thinks it is a full cartridge. this will reset the ink level and u should have no problems.
Putting a piece of tape over each cartridge window, solved the problem for me. I used some very thin white tape. Make sure you shut the printer down completely and restart it after doing this. I got the warning that all the ink levels were low and would need to be replaced, but no longer prevents you from printing. I did a test page all is well.
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Re: replaced yellow ink(cyan) with new one
This might be for several reason:
1. You are useing generic ink carts, which do make a lot of trouble because of bad ink and/or diffrent construction that leads to this problem.
-> Use another cart. Bestway: original brother ink cart.
2. You have forced a cart into position and squeezed the led-control board out of its holder. (The led control board has to be plugged in again).
3. The cart isnt secured by the white stand. Make sure that the nose of the stand is clicked into position above the top of the cart.
4. Did you answer the question of the machine? You might have to answer the chaning of the cart.
In case none of the solution given can help, do the following:
take ALL carts out of machine. Unplu machine from power outlet.
Replug to power and watch the display. reinsert carts as demanded by machine and answer question on lcd.
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When the printer says "install C" it is referring to the Cyan (blue) ink cartridge. If this is not a new cartridge, you might have to replace it. If this is a new cartridge, try following these steps.
1. Unplug the power cable. 2. Remove all 4 ink cartridges. 3. Close the ink cover 4. Plug the power back in. 5. Wait for the machine to warm up and tell you that the ink is empty. 6. Reinsert all 4 ink cartridges.
If you keep getting the same message you should try another cartridge. You can put the yellow cartridge in the blue spot to see if you get the same message. If you get the same message then the machine is broken. If you get a new message then the cyan cartridge needs to be changed.
look at the ink cartridge and and first see if the ink covers the top of the cartridge. there is a little part of the ink cartridge the best way to explain it, is there is a tab,. that tab goes into a sensor. if the tab has ink on it, then you mostly like have a problem with the sensor itself. but if there is no ink, the printer is correct. i have had several people bring printers with those type of problems, and when they bring the cartridge i look at it, and they are practically empty.
I contacted the Brother site, the support function there. Pursuant to what I found there, I unplugged the printer for ten seconds and replugged. The message display then told me that cyan was empty, and that magenta was near empty.
I installed a new cartridge in place of the empty cyan, and that fixed it.
Look at the Epson printer's LCD screen to see the ink levels for each cartridge. If your cartridge is completely empty, simply press the "Color" button. If your cartridge has a low ink level, press "Setup". Hold down the button on the upper left side of your LCD screen until the words "Replace Ink" appears, then press the "Color" button.
Wait until you see the words "Open the scanner" on the LCD screen. Then lift open the printer top by pulling up on the side grips next to the scanner unit. Make sure that the scanner lid remains closed. The ink cartridge holder should move to the far right of the printer.
After the cartridges have completely stopped moving, pull the cover of the ink cartridge holder up and toward you. Press in the tab of the cartridge you need to replace. Lift the cartridge straight up to pull it out of the holder.
Unwrap the replacement cartridge and insert it securely into the holder. Press straight down until the cartridge snaps into place.
Close the cartridge holder cover and make sure it clicks into place. Close the scanner unit and wait while the printer charges the new replacement cartridge. Wait until the word "Charging" disappears from the LCD screen before using your printer.
Do not turn off your Epson printer while the "Charging" message is
still on the LCD screen because this may cause your inks to not fully
charge. Turn off your printer only if there has been no response for
over five minutes.
Clean up any ink spills with soap and warm water.
Replacement ink cartridge: Black (T048120); Cyan (T048220); Magenta
(T048320); Yellow (T048420); Light Cyan (T048520); or Light Magenta
Well you've got a nice printer! With 6 different ink cartridges, you only need to replace the one(s) that is low. Black - C8719EE Cyan - C8771EE Magenta - C8772EE Yellow - C8773EE Light Cyan - C8774EE Light Magenta - C8775EE
Simply turn off the printer, open the cover to reveal the bank of ink cartridges. Pop up the white-ish plastic covering tab, pull out the old cartridge (this should not require too much pressure). Then pull off any protective film from the new cartridge, re-insert one at a time. Power up printer wait for self test, should be all set to go
Take all carts out of the machine. Have a look into the cart holder. Is there ink swapping beneath the white plastic? (You might shake the machine ;-)
If yes, the cart holder leaks and needs replacement.
If not (your lucky!) it could be that the automatic cleaning procedure which starts when a cart is changed has soaked the carts empty.
Do set machine with date and time and NEVER unplug NOR use a power switch which breaks the power supply.
Do use constant power and switch off machine by pressing stand-by-fax-button!
Everytime when machine comes to (new) power contact it runs an extensive ink cleaning procedure. thats why your carts are always near empty....
The stand-by will prevent this and machine does some cleaning procedures which consumes only a few drops(!) of ink!
The display asks you if you have changed the carts. Do answer this question by pressing 1 for YES or 2 for NO.
This will reset the built-in inkcountermanagement to the correct settings