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If the machine is just using magenta, yellow and cyan to make black then you get brown, not black, (that why you have a black image unit, because YMC will not make black, color system issue. unless the machine is using yellow,magenta, cyan, then black. Are you using 3rd party toner or OEM cartridges? Did you replace the cartridge before it was required?
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.
maybe the cartridge is wrong, release it and clean the electrical contacts, put them again one by one, if notting happen, try this
As the printer operates, it moves ink from the ink cartridges into a printhead reservoir. The printer does not deliver a message when an ink cartridge goes empty, because it still has ink in the reservoir. The printer continues printing until the ink level in the reservoir falls to a first trigger point - then a message appears advising the printer owner to Replace Cartridges Soon . At this point, other cartridges that are empty but have not reached the trigger point are also mentioned in the message, to save trips to the retailer. After the first trigger point, the printer can continue printing until ink levels in the reservoir reach a second trigger point. At the second trigger point there is only enough ink left to perform vital servicing tasks, and a new message appears, saying Ink Cartridges Empty . The options offered depend on the usable inks remaining. If no options are offered, the cartridges indicated must be replaced before printing can continue.
The Ink Cartridges Empty options are described in the table below:
Ink colors outOptionPrint mode possible
Cyan, Magenta, or Yellow (any or all)
Continue with other colors
Cyan/Magenta/Yellow mode (composite black)
Text and photo quality will differ from those printed when all colors are available
Light Cyan or Light Magenta (either or both)
Cyan, Magenta, or Yellow (any or all)
(Black still available)
Print with black ink only
I notice that you saw error message 'check ink c'. This means the printer want you to observe cyan ink cartridge. so,what happen before this message appears?. Please make sure that cyan ink is not empty. if you are sure the ink not empty,then remove cyan ink and reinstall it,else try dry clean ink cartridge contact or you may use contact cleaner before reinstall it. if you have have another cyan ink cartridge that is in good condition,compare it. if this works,means cyan ink cartridge is faulty then you need to replace with the new one. but if the problem still persist,it may caused by carriage unit or logic board problem.
Follow the steps below to remove and replace the empty ink cartridge.
Turn the printer on.
Open the ink cartridge door.
Figure 1: Opening the ink cartridge door
Squeeze the gray tab below an ink cartridge slot to release the gray latch and then lift the latch.
Figure 2: Lifting the latch1 - Ink cartridge latch for the black ink cartridge2 - Ink cartridge latches for the color ink cartridges NOTE:
Theink cartridge areas are color-coded for easy reference. From left toright, the ink cartridges are black, yellow, light cyan, cyan, lightmagenta, and magenta.
Pull the ink cartridge toward you out of it's slot to remove it.
Figure 3: Removing an ink cartridge
Remove the new ink cartridge from the packaging.
Hold the ink cartridge by the handle and then slide the ink cartridge into the empty slot.
Makesure that the ink cartridge is inserted into the slot that has the sameshaped icon and color as the ink cartridge. The copper-colored contactsshould be facing the printer as the ink cartridge is inserted.
Figure 4: Inserting an ink cartridge
Press down on the gray latch until it clicks into place.
Figure 5: Closing the gray latch
Repeat steps 3 through 7 for each ink cartridge that needs to be replaced.
All six cartridges must be installed. The printer will not work if an ink cartridge is missing.
Close the ink cartridge door.
after Doing this all Follow the next step :-
Please Try This, I am sure it is going to workout.
Resetting the All-in-One Press the On () button to turn off the unit.
Disconnect the power cord from the back of the unit.
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