Question about Brother SX-4000 Typewriter

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Brother ax-12 cable detached

A classic brother ax-12 was in great condition until a cable appears to have become detached inside; it seemed to be looped around 2 pulley type components and involved with moving the print "head" back and forth; i will be forever impressed with the powerr of the web if someone can give me technical tips on how to reattach this cable; also is nyone familiar with where i might download a brother ax-12 service manual (preferably free of course), thanks

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  • hellochief Aug 28, 2007

    thanks for the suggestion! in looking at the pulley it does not appear to be damaged; it just seems like the cable ends popped out of the right side pulley (white plastic with grooves around the center for cable to spool); i guess if i could remove the white pulley, i might be able to superglue the cable back in; unfortunately i'm not even sure of how the cable should be oriented on the spool; i know this is an old unit, but is anyone aware of a service manual or related documentation freely available on the web that might be helpful? thanks again



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The pulley is broken and you have to remove it and try to drill a hole to attach the cord. A new pulley should be available from Brother. I have seen repairmen jam a small piece of metal inside the cracked area, but it is a little bit tough if you have no experience. You have to remove the covers and the main logic board and the carrier motor asm. Then the pin holdong the pulley. A shop would charge about 50 dollars.

I’m happy to help further over the phone at

Posted on Aug 26, 2007

  • Jay Blair
    Jay Blair Aug 28, 2007




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