I have not used my Nakajima AX-220 electronic typewriter for many-many years. Now, trying to use it again, I've put a new ink cartridge, the letter "daisy" is ok,it looks as everything works well, but nothing is being types on the paper. I noticed that the small "hammer" does not move at all and does not hit the ink ribbon. Can you please suggest a solution? Thank you very much in advance.

Office Equipment & Supplies - Nakajima