How to do Brother MFC-3720 MFC-3520 deep cleaning printhead

Posted by printerbullet 26/10/2016 0 Comment(s) Printer Guide,

One or more of my colors are not printing (blank). (Soft Cleaning)

If one or more of the ink colors are missing from your printed documents (i.e. received faxes, copies and/or documents printed from the PC), the ink cartridge(s) may not be installed correctly or nozzles in the print head may be clogged. Verifying the ink cartridges are installed properly and/or cleaning the print head may resolve this issue.

 

  • Verify the ink cartridges are installed correctly. 
     
  • Follow the steps listed below to check the print quality and clean the print head.
  1. Press Ink(Ink).
     

    You can also press Settings(Settings) and Ink.

     
  2. Press Test Print.
     
  3. Press Print Quality.
     
  4. Press OK. The machine begins printing the Print Quality Check Sheet.
     
  5. Check the quality of the four color blocks on the sheet.
     
  6. The Touchscreen asks you if the print quality is OK.
    Do one of the following:
     
    • If all lines are clear and visible, choose Yes to finish the Print Quality check and go to STEP 12.
       
    • If you can see missing short lines as shown below, choose No and go to STEP 7.
     
    Check quality of color blocks
  7. The Touchscreen asks you if the print quality is OK for black and the three colors. Press Yes or No.
     
  8. The Touchscreen asks you if you want to start cleaning. Press OK. The machine starts cleaning the print head.
     
  9. After the cleaning procedure is finished, press OK. The machine will start printing another Print Quality Check sheet.
     
  10. Once it prints out, check the quality of the four color blocks on the sheet.
     
  11. The Touchscreen will ask you if the print quality is OK.
    Do one of the following based on the print quality of the check sheet:
     
    • If all lines are clear and visible, choose Yes to finish the Print Quality check and go to STEP 12.
       
    • If the print quality continues to be poor and you have tried to clean the print head less than five times, choose No andreturn to STEP 7 to repeat the print head cleaning. You should complete the Print Quality Check sheet and print head cleaning process up to five times.

 

 

Video to teach you how to enter maintainance mode to do deep cleaining.

1) Press and hold " Copy + Home " Button, until screen changed,
2) Press and hold more than 5sec on the 4th or last column to enter next screen,
3) Press *2846 to enter maintainance mode,
4) Key 76 and press "Mono Str", deep cleaning will start running,
5) To exit maintainance mode, Key 99. It will restart itself.