Could not perform correction -- message -- MF644Cdw

[charliemullin]

What does this message mean and why don't the functions work?

Could not perform correction

I get this message after running either of these functions:

Correct Print Color Mismatch

Auto Adjust Gradation

What is preventing these functions from working? (Does it simply mean there is nothing to correct?)

How can I fix the problem?

[Chickadee]

I am having the exact same issues. The only things I am now trying that no one else has mentioned is condensation removal which can take up to 3 hours and turning on reduce faint printing after replacing cartridge. Will reply back if it helps.

[Natoqc]

I have had this problem on and off for years with my MF8580CDW. Usually I use compatible cartridges but for the past year my printer has had correction issues with one out of two cartridges so I ended up installing original Canon cartridges. Worked fine for a few months and then same issue has cropped up again.
I tried swapping cartridges in various combinations (I have 2 sets, one original and one compatible) without any luck. I did all the cleaning ITB etc... While searching on the internet I came accross the service manual. The correction feature reads the alignment signal from the "colour displacement/density signal" sensors. This is the bar in front  of the machine just under the toner cartridge tray. With the black toner cartridge removed and the tray slightly pulled out it is possible to see several square or rectangular holes in the plastic cover which is held by 2 screws. In four of those holes (2 on each side) there are small black round sensors. I first gave them a swipe with a small paintbrush without success, I then cleaned them with some alcohol on a cotton bud and hey presto the alignment worked again.
It is relatively simple fix. I do not know why it is not recommended to clean these sensors from time to time. I hope this info will save a few printers from being junked. I was getting close to that point after having spent all morning trying to solve the isssue.

[stoc951]

Thanks for posting your solution to this problem.  I downloaded the service manual for my MF644CDW and located the color displacement/density sensor and the color displacement sensor located under the cartridge tray.  I tried the same things you mentioned and had no results.  I keep hoping that some solution eventually works.  Even though the printer is still under warranty, Canon has refused to repair or replace it.

[fredobrien]

Setting the paper settings to #1 on both did it.  It works now... Weird. But works. 

[phillynook]

Same thing happened to me.  This printer, MF753CDW (and it looks like many other models) is very finicky about paper size matching and the selection process is complicated and not very clear.  Tons of paper size choices and it's hard to confirm that you have selected/checked all the right paper size boxes to match what the printer is requesting.  This should be a lot easier.  Canon needs to improve this process so the printer does not get hung up on a technical (non)issue and frustrate the customer.

After multiple attempts and scrolling through every possible option, I found the source of the mismatch in paper settings, and got it to work.  This took almost an hour to get it right.

[fredobrien]

I have the same problem. 
Have tried everything!  But... When i replace the Ink cartridges it works............

[mountain_gunner]

I discovered the resolution to my "Could not perform correction" during Full Color Gradation... I noticed when I would take the freshly printed paper and put it on the scanner bed and then place my hand for more weight on the lid to firmly hold the paper down, I could get through both steps, but if I didn't, it always errors.  The fix for me:

• I confirmed I have Tray 1 set to LTR/Plain 1
• I used the freshly printed sheet
• Carefully placed the sheet onto the glass, ensuring the corner touched the arrow
• The Solution--> Closed the lid and placed my hand on it to full "seat" the paper against the glass (the paper comes out of the printer with a slight curve- I believe putting weight on the lid makes the paper perfectly flat- the scanner is VERY sensitive!

I tried this several times both with the weight of my hand and without it.  I was able to reproduce the error without any additional weight on the lid EVERY time.  I was able to resolve the error EVERY time with the weight of my hand on the lid (we aren't talking 20 lbs... just firm weight with your hand).

Hope that helps!