Seagate head compatibility

[-BR-]

Does anyone know for sure what is the correct criteria when selecting a donor for head replacement in Seagate 7.200.X ???

For example (7200.7):
Pcb is ok, tested with one of the donors

Hdd to recover data:
------------------
MODEL: ST380011A
S/N: 5JVMTVNZ
P/N: 9W2003-371
HDA P/N: 100316339
CONFIG: D8J-02
FW: 8.01
DATE CODE: 05412
SITE CODE: WU

in red the few differences
between donors and bad hdd

Selected donor1:
--------------------
MODEL: ST380011A
S/N: 4JV070HP
P/N: 9W2003-371
HDA P/N: 100316764
CONFIG: D8J-02
FW: 8.01
DATE CODE: 05154
SITE CODE: TK

Selected donor2:
--------------------
MODEL: ST380011A
S/N: 5JVWW18B
P/N: 9W2003-399
HDA P/N: 100348969
CONFIG: CXN-01
FW: 8.01
DATE CODE: 06333
SITE CODE: WU

Selected donor3:
--------------------
MODEL: ST380011A
S/N: 5JVM28V3
P/N: 9W2003-314
HDA P/N: 100316764
CONFIG: D5C-03
FW: 8.01
DATE CODE: 05396
SITE CODE: WU


But after exchange only head mask in terminal

After testings, heads were returned to original donors
All of them returned to work perfectly, all 3 cases!
full lba scan test

I noticed that in top of a internal plastic piece that hold
terminals to the pcb from the inside, there was 2 writings:

Hdd to recover data:
1st = AP2-C
2nd = AG-C

Selected donor1:
1st = AP2-CK
2nd = TI-C

Selected donor2:
1st = AP2-C
2nd = TI-CR

Could it be that the 2nd marking must be AG-C ??

I opened about 8 hdds, the only one with AG-C was the bad one
All the others had TI-XX for 2nd marking and AP2-CX for the 1st
(where X stands for something or even not present)

Any advice is welcome
Thank you
-BR-

[Alberto]

We use always same model, site code, and fw, works 100% at the most seagate cases, well until 7200.11 but u could use donnor´s with same head, map, and same preamplifier code, are u sure u did correctly the head swap process, means doesnt damaged any MR sensor on the process?, because at that families doesnt need special alignment´s, another cause could be media damaged, did u tried to check by terminal, answer´s before & after head swap?

Regards

[steven]

here is SEAGATE bad DRIVE,
80 GB
CONFIG: D8J-02
FW: 8.01

40 GB
CONFIG: A4K-00
FW: 8.01

this 2 CONFIG is a bad drive.
mostly head will crash and Platter got contaminated specially for A4K series...

ALL your DONOR is compatible with your patient Drive.

[-BR-]

Hi Alberto and Steven,

First of all thank you both

I did check terminal before head swap, there was only head mask
I think that it's not our head procediment, since all the donors return to function perfectly and they sufer the exact same procediment
I was starting to think it was some kind of media damage, now steven's reply almost confirmed it

I will now try to clean the original head with isopropilical alchool as a last resource

-BR-

P.S steven are you from ACE?

[steven]

P.S steven are you from ACE?

No. I'm not

[Pepe]

What if u put the patient head into one of the donors?

pepe