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searching for parts list and replacement instructions.

@padroc here is the parts list for your printer. MFC-J5320DW_J5520DW_J5620DW_J5.pdf Common replacement for Brother is Open the printer just as when you install new ink cartridges. Let the cartridges cradle move to the center of the printing unit. Unplug the printer to stop the cartridges in its position.Place the waste ink absorber in its black rubber frame. They will be on the right side of your printer and located in the area where the ink cartridges remain when the printer is in standby mode. Use a paper towel or similar to soak up the excess ink that may be in pads by pressing it down into the top of the frame. Pull the rubber frames from the printer, carefully remove the ink absorber pad or pads from the rubber frame. Insert the new ink absorber pads into the rubber frame. Change the rubber frame in its original position and then close the printer.Hold down the power button and then plug the printer. Keep holding the power button until the printer will start and reset itself and come online.Wait for the green light to turn and then press and release the power button again. It should blink for two to three seconds, and then stay lit. This indicates that the printer has been reset.