The period prints as two vertical lines and a dot

Those to vertical lines are due to the fact that hammer( the electronic striker) that smacks the back of the "daisy" whell ( the little disk with all the lerttres and stuff) the hammer is going between the " spokes"and is stricking the ribbon / paper and leaving what type-techs called dear tracks. 99% of the time the spoke is bent enough to allow this to accrue? Look very closely at the back of the "spokes" and see if there is any damage or bent spokes. If you have another disk change it and see if the letters that are acting up, stop. This the number one reason hands down. Good luck Bret

Printwheel ou of time or broken spoke on printwheel, try new wheel first, if not that switch on left side of carriage may be out of adjutment, see if printwheel is rotating when you turn on machine you should see it turn andhear it....