SEAGATE 7200.12 - Heads Match

[ZeBong]

Hi to all,

I have this disk and i have a donor with the same site code:

ST7200.12.png (98.46 KiB) Viewed 4051 times

After the head change i could not get read the surface, and i match the site code.

I notice that the stick in the pre amp is different.

Would like to know how other people use this for matching the heads.


Regards
Jose

[labtech]

Did you match the first three digits of serial number?

[ZeBong]

yes i try that
also the site code
and the pre amp ID

nothing

[dai]

Have you already solved this matter ?