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WD heads swapping-what requirements need to match?

Posted: 30.05.08, 06:38
by mrdata
Hi All friends,
Anyone know what requirements need to match for WD drive 's heads swapping ?It seems like the result is not good if just matching the model.

Any advices appreiated

Thanks You in advance

Posted: 30.05.08, 09:53
by dmarques
You should try at least to match model and DCM number as close as possible.

Re: WD heads swapping-what requirements need to match?

Posted: 07.04.09, 11:29
by steven
DCM still a myth for me...
the most important is matcching the same Head mask...

Re: WD heads swapping-what requirements need to match?

Posted: 08.04.09, 00:13
by Alberto
The problems are alignment over WD

Re: WD heads swapping-what requirements need to match?

Posted: 05.05.09, 12:16
by AJ2008
steven wrote:DCM still a myth for me...
the most important is matcching the same Head mask...


I agree. As long as model and head map is same, this is what I tend to go for.

I do try matching DCM on drives pre Marvel, but as far as Marvel family goes, I also think DCM is a myth

Re: WD heads swapping-what requirements need to match?

Posted: 15.05.09, 03:43
by aviko
AJ2008 wrote:
steven wrote:DCM still a myth for me...
the most important is matcching the same Head mask...


I agree. As long as model and head map is same, this is what I tend to go for.

I do try matching DCM on drives pre Marvel, but as far as Marvel family goes, I also think DCM is a myth


Then try for example JH or JJ series with unmatched 5 and 6 letter in DCM

Re: WD heads swapping-what requirements need to match?

Posted: 15.05.09, 05:48
by steven
for me.. if they are same family and same head mask.. I will try to change it,. WHY ??? because If nothing DO we will never know... if we try we will know....

Re: WD heads swapping-what requirements need to match?

Posted: 15.05.09, 15:46
by ZeBong
Hi to all,

If we just change the head in a WD and dont change the PCB, we dont need to worry about the head mask.

It is in the ROM, and if we dont change the PCB that problem not appear.

The problem that i am having is sometimes the HEAD did not read the surface, dont know why maybe pre amp differents...

Please let me know if i am thinking BAD ?