What components are these SK?

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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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bos
  • bos
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What components are these SK?

January 24th, 2016, 14:23

SK1, SK3 and SK4 (can't find SK2) in the corners. Looks like a photo cell of some sort, but what is it? And what's its purpose?
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wd_velociraptor_pcb_top2.jpg
fzabkar
  • fzabkar
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Re: What components are these SK?

January 24th, 2016, 14:52

http://en.rlab.ru/doc/images/hdd_main_parts/PCB1.jpg
http://hddscan.com/doc/HDD_from_inside.html
http://www.farnell.com/datasheets/58860.pdf
http://www1.futureelectronics.com/doc/M ... 00LD-R.pdf
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