Toner cartridge is jamed

1.If you are using the multi-purpose tray, close it.
2.Open the front cover while pressing the open button.
3.Remove the toner cartridge.
Immediately place the removed toner cartridge into the original protective bag or wrap it with a thick cloth.
4.Holding the green tab (A), tilt the transport guide toward you.Do not take your hands off the transport guide until it moves back to its original position in Sep 6.
5.Remove the paper by pulling it gently.
Remove the jammed paper as horizontally as possible to prevent unfixed toner from spilling.
6.Move the transport guide back to its original position slowly.
7.Install the toner cartridge.
Push the toner cartridge into the printer firmly until it touches the back of the printer while aligning (A) on both sides of the toner cartridge with the toner cartridge guides inside the printer.
8.Close the front cover.

I had a similar problem in that after changing one of the cartridges (I bought a whole set), the message "cannot rotate cartridge" appeared. I tried pressing the cartridge in more firmly and may have caused the carousel to rotate a little in the process. I cycled the power which seemed to clear the error message and allowed me to select the next cartridge to change, but upon opening the door to change it, was unable to remove the old one as it was positioned a little too high. I eventually cleared the problem by manually rotating the carousel by pressing in and holding the carousel release (see arrow) while rotating the carousel downward slightly, to line the cartridge up as it appears in this picture. Then powered it back up and was able to do the normal cartridge replacement procedure for the remaining cartridges without further error messages.

paper keeps jaming - Brother MFC-3240C All-In-One InkJet Printer

Have you tried
(1) running "print clean" or something like that?. (If you don't know how to do that, check your manual).
(2) Removing cartridge/s and installing again?
(3) Cleaning head by dabbing lightly with Q-tip in isopropyl alcohol?

Other possible solutions depend on answers.

Hi.

you could use a test pen to push all the right side black latch that holds the toner back to the normal position. in a normal position it shall be in and not out as if you see it carefully the latch on the right side of the door is where it help to set in the transfer belt.

try this, its probably a small part of jammed paper or then theres a problem with the pickup, try cleaning it.

1. Turn off the printer.
2. Remove any paper trays. Inspect them for wrinkled or damaged paper.
3. Also open the back cover of the printer if this model has one.
4. Open any other doors that give access to the printer's paper path and to the toner or ink cartridge.
5. If necessary, remove the toner or ink cartridge. Place it away from light/ sun light to avoid damaging it.
6. If you find a piece of jammed paper, remove it by holding it with both hands and pulling firmly. The goal is to keep the paper from tearing. If several pieces are jammed together, try pulling out the middle piece first to loosen the jam.
7. If the paper does tear, try rotating the roller gears manually to free the paper. Don't force anything, though. Do this step especially if the jam message comes up repeatedly without any obvious paper jam, there may be a small tear of paper inside.
8. Ones the printer is free of paper Replace the toner or ink cartridge and paper trays, close any doors you opened and turn the printer back on.
9. If the printer paper jam message still appears, then there is still some paper in the printer. Reinspect the paper path.
10. see alternative if the problem is still not solved.
    

alternative :
Load a piece of thick paper, for example photo paper and press the resume button (may be diffrent button on diffrent models) a few times to the printer picks up the paper and puts it through the machine. ..

I think in the menu you have to select replace cartride.. then new or same with new toner...

each toner cartridge has connections and you must make sure all are tight... or you get alot of errors.

If the paper jam occured behind the toner cartridge, did someone pull it out and leave a piece behind the toner? Look to see if there is a small piece of paper jamed in the connector of the toner / developing unit. Also look for any small piece of paper in the paper path.

Step1
Turn the printer off and on to see if it can automatically clear some or all of the jam. Many printers provide an error-code listing on the front panel display for the area where the jam occurred. If your printer shows an error code, be sure and check the printer manual to see if that identifies the area of the printer where the jam occurred. 
Step
2
Turn off the printer. 
Step
3
Remove any paper trays. Inspect them for wrinkled or damaged paper. 
Step
4
Open any other doors that give access to the printer's paper path and to the toner or ink cartridge. 
Step
5
If necessary, remove the toner or ink cartridge. Place it in a bag or away from light to avoid damaging it. 
Step
6
If you find a piece of jammed paper, remove it by holding it with both hands and pulling firmly (see A). The goal is to keep the paper from tearing. If several pieces are jammed together, try pulling out the middle piece first to loosen the jam. 
Step
7
If the paper does tear, try rotating the roller gears manually to free the paper (see B). Don't force anything, though. 
Step
8
Replace the toner or ink cartridge and paper trays, close any doors you opened and turn the printer back on. 
Step
9
If the printer paper jam message still appears, then there is still some paper in the printer. Reinspect the paper path.

Open the front door and remove the toner bottle.

Look near the colour toner carts and you will see a small round hole. Jam a screwdriver in that hole and the carousel will rotate freely. Move the carousel round and remove each toner one at a time.