Print head and ribbon do not in sync

The print hammer is striking between the letters. Two thing
you may have a petal, letter broken off. If its the same letter every time usually thats it, need new daisy wheel.
Or Homing is off when the wheel turns hammer hits between letters. Needs repair.
Or
Daisy wheel petals are bent.

Remove the ribbon, then remove the daisywheel, reinsert daisywheel, replace ribbon and it should work.

its a printer right?
and it dot matrix type right?
if yes. try this
check flexible cable from main PCB to print head. if its torn. maybe the initial sensor is ok but not the data line.
replace flexible cable.

The selection motor bearings just right of the print solenoid get dry a little WD40 on the front and rear bearings usually takes care or this.

DickyO

change CASSETTE DAISY WHEEL

alot of the brother t/w's have 2 cam assemblies under ribbon holder. 1 operates the print hammer and 1 operates the correction ribbon lift. sometimes these will hang or lockup. sometimes turning on and off a few times will take care of it, but sometimes it needs to be worked on by a t/w tech. if you look when you type a character, most likely the print hammer is not firing or it is striking the correction ribbon instead of the black ribbon.

hth,
razors

could be the ribbon is not lifting, do you see an image on the ribbon, also may be twisted inside the cartridge the shiny side has to be facing the keyboard.

It's been awhile since I've worked on these.

What is the typing mechanism in here? I believe Brother was using a wheel.

Turn oFF the typewriter, take the ribbon out.....use the lever on top to release and remove the print wheel cartridge. Lightly rotate it to see if it will move and reinsert the cartridge. snap it back into place.
Turn on the machine, the typewriter should move the carrier to the left and reset the printwheel....if it is snapped back properly.

Ok,there could be two possibilities ,1, The daisy wheel may not be seated in properly. Of course I assume that the print side of the daisy wheel is facing the platen and that when the typewriter is switched on the print unit makes its customary re-setting motion and that the daisy wheel spins around at the same time. if this does not happen make sure that the lock-in lever for the daisy wheel is pushed home.. I am sure that you do all these elementary things so the only other possibility is the the hammer seleniod is not fully functioning and would have to be re-placed....Good luck!