Print head is not printing seems to be clogged from non-use. Have tried test printing through several new cartridges and still not working. Can the old - dryed ink be cleaned off of the print heads?

Hi, below is from the brother website for your model. Very common for the ink heads to become clogged /dry out. You probably have done this but here it is anyway. your print head is part of the machine, so it will need to be disassembled to clean it, That can be very difficult. Try the following anyway, it might help you. also, you could try using a Q-Tip wet with vinegar water to get under to the bottom of the print heads, if you can get the head to move off its dock and then unplug it when its moved over. anyway here is the Brother link info (without pictures-see the link above if you need the pictures)

• Print a Print Quality Check Sheet.

1. 
   
   1. ress the Ink or Ink Management key on the control panel of the machine.
      
      
   2. Press the up or down arrow key to choose Test Print and press OK.
   3. Press the up or down arrow key to choose Print Quality and press OK.
   4. Press Color (Colour) start. The machine begins printing the Print Quality Check Sheet.
2. Closely examine the Print Quality Check Sheet. Each of the four colors is represented by a slanted square pattern made up of individual blocks. The colors should appear in the following order from left to right: Black - Yellow - Cyan - Magenta.
3. Compare the print quality of the Check Sheet you just printed with the three examples listed below:
   
   (A) One or more complete blocks of colors are missing:
   (B) Most of the short diagonal lines are missing from one or more color blocks:
   (C)Some parts of the short diagonal lines are missing from one or more color blocks:
   
   
4. The display will then ask you if the print quality is OK for black. Press the down arrow key or 2 or "-" to chooseNo for black with the problem.
5. The display will then ask you if the print quality is OK for Color. Press down the arrow key or 2 or "-" to chooseNo for color with the problem.
6. The display will then show Start Cleaning? Yes No.
   Press the up arrow key or 1 or "+" to choose Yes and the machine will start cleaning the color ink cartridges.
7. When the machine completes cleaning the print head, press Color(Colour) Start. Another Print Quality Check Sheet will print.
   
   
8. Repeat the cleaning and the quality check process following the Step 4-7.
   
   
9. Compare the second or third Print Quality Check Sheet with the first one you printed in step1:
10. 
    
    
    • If the print quality on the first Check Sheet matched Example (A) or (B) and you do not see any improvement on the second or third Check Sheet
      
      
    • If the print quality on the first Check Sheet matched Example (A) or (B) and you see some improvement on the second or third Check Sheet but it's not perfect, repeat the cleaning and the quality check process three more times (totally five times).
      
      
    • If the print quality on the first Check Sheet matched Example (C) and you do not see any improvement on the second or third Check Sheet, repeat the cleaning and the quality check process three more times (totally five times).
    Press Stop/Exit.