You might possibly find the answer to your question in the User Manual (available online in PDF form, readable by Adobe Acrobat Reader software or others) at:
If all else fails, you can look in the Service Manual (available from the following link for $16.49):
But in general, the needle clamp rides up and down on a rod, and is screwed onto that (in many models of Brother sewing machine.) It does come off occasionally, esp. if the screw comes loose. (No screw on the clamp? look around on the floor or wherever it may have rolled off to when the clamp came loose.)
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the manual does;nt show what I want to put the springs back into the needle clamp
I do not know the answer for this one. I will have to, obligatorily, Opt Out and let anyone else here who wants to, try to answer it properly. Thanks.