Question about Brother SX-4000 Typewriter

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Hammer doesn't strike

I was typing along one day when the machine just stopped printing anything on the paper. the print head moved normally, and I could hear the wheel clicking as it moved, but nothing was on the paper. I assumed at first that I had simply come to the end of the ribbon, so I replaced it. Of course that didn't work or I wouldn't be posting this. I realized then that the hammer isn't moving at all. I tried every mode. I tried resetting the machine. I tried turning it off. I even tried unplugging the machine. Nothing helps.

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Re: hammer doesn't strike

Try taking the wheel out and aliging it with the piece in the middle with a hole in it so that the pin and the wheel connect when you push the lever forward to connect the wheel to the disk.

Posted on Sep 14, 2007

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  • 307 Answers

SOURCE: IBM wheelwriter

Is the hammer moving at all? There is a rubber part on the I think left side of the ribbon hammer, down on the side of the printer. This will adjust the amount of impact. I really doubt if
this is the problem, but worth a try to look at. This part and I think it is a blue slide will move up and down to adjust the impact. Possible lubrication and there is a large spring that actually pulls that hammer forward, check to see if this spring is OK. Other than that electronic problems such as main board, printer motors, etc. Does hammer move freely by hand? Also mechanical binding in the printer... GOOD LUCK.

Posted on Jul 23, 2008

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