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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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Is This The Read Channel?

January 15th, 2015, 13:37

I have tried testing this board to define the read channel but the tests are inconclusive. I have marked what I presume is the read channel, can anyone confirm?

ST31500541AS
Board 100535537 REV A
Attachments
Read_C.jpg

Re: Is This The Read Channel?

January 15th, 2015, 14:34

Looks right to me...or the two just down to the left in the photo.

Re: Is This The Read Channel?

January 15th, 2015, 14:46

lcoughey wrote:Looks right to me...or the two just down to the left in the photo.

Its deciding which one of those two sets I am having issues with :D

Re: Is This The Read Channel?

January 15th, 2015, 16:27

I think you have the right two highlighted, the other set looks like it goes to the preamp which wouldn't make much sense.

Re: Is This The Read Channel?

January 15th, 2015, 16:42

you got it right mate

I've had same one a few weeks ago and I used the same pins

Re: Is This The Read Channel?

January 15th, 2015, 16:50

Thanks everyone :D

Re: Is This The Read Channel?

January 15th, 2015, 17:10

My tutorial shows you how to distinguish between the read and write pairs with a simple voltage measurement.

How to identify the Read Channel when no terminators:
http://www.alexsoft.org/viewtopic.php?f=24&t=123&p=1632

Re: Is This The Read Channel?

January 15th, 2015, 19:37

fzabkar wrote:My tutorial shows you how to distinguish between the read and write pairs with a simple voltage measurement.

That is always my go to link to test these boards. But for some reason I was getting no voltage at all from the channels. I have another board I will test/compare it against tomorrow.
Thanks

Re: Is This The Read Channel?

January 16th, 2015, 17:32

data-medics wrote:the other set looks like it goes to the preamp which wouldn't make much sense.

Why not? Where do they go, then, if not to the preamp?
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