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
March 16th, 2009, 10:58
Hi to all ,
Afther change heads have this :
- Code:
Preamp ID 6C unsupported
Reset
4096k x 16 DRAM
F>
Preamp ID 6C unsupported
Reset
4096k x 16 DRAM
F>
It looks like the preamp is not the same, but i have match the site code.
Any comment,
Thanks
ZeBong
March 16th, 2009, 11:04
The head stack is incompatible.
March 16th, 2009, 11:17
Thanks Jono.
March 17th, 2009, 4:32
Either that or you've left both rubber spacers in between the PCB and the head stack connector, so they don't connect.
March 17th, 2009, 5:05
The pre-amp "6c" identifier is not compatible. Simple as that ;o)
March 17th, 2009, 7:17
Can you show the patient and donor details here?
March 17th, 2009, 7:41
Hi,
PATIENTE :ST3320820A
P/N : 9BJ03G-500
FW : 3.AAC
DC: 07025
SC: WU
DONOR:ST3320820A
P/N : 9BJ03G-065
FW : 3.AAD
DC : 07213
SC : WU
PCB :
motor chip different name
ST-v470BB
AGERE
number the same : 100404196
Pre amp
can not see the ship numbers / name

- PRE-AMP.JPG (16.28 KiB) Viewed 11387 times
March 17th, 2009, 7:49
Personally I would have thought this would work....
March 17th, 2009, 12:45
With Seagate having over 300 seperate part numbers for OEMS I am not surprised
Dell may require a specific pre-amp to go with a media combination.. IBM may require something else... Each OEM requests a certain spec and Seagate will mix n match components for best yield <> reliability for each vendor
May 5th, 2009, 18:55
Back to this case,
I can see one differente that could not make the heads match , the FW version.
Anyone have cases like this ?
May 6th, 2009, 1:49
Have similar case, we'll talk privately.
May 6th, 2009, 1:57
I have such case before. But it is not seriuos problem... from experience we learn more......
May 6th, 2009, 3:38
Take pics of the little PCB's inside the drive (that connects the head stack to the PCB, through the drive).
May 6th, 2009, 8:44
pcimage wrote:Take pics of the little PCB's inside the drive (that connects the head stack to the PCB, through the drive).
Hi sean,
DONOR:
GL4-
T AGA2-B
PATIENT:
GL4-
BTI-B
I think that the first do not match by a letter
Dont know is this have to macth all?
Thanks
ZeBong
May 6th, 2009, 8:54
Jose,
you have msn

Sean
May 7th, 2009, 6:55
being a secret spy I would guess the following PREAMP configs
Ti= Texas Instruments
A= Agere example (TrueStore PA7800 EOL)
Apples & Pears
Chalk & Cheese
May 7th, 2009, 18:00
The cats out of the bag!
May 8th, 2009, 4:01
opsss put it back put it back
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