WD3200AAKS-75L9A0

[protech]

Thanks in advance for your help. A customer dropped off a WD3200AAKS-75L9A0 PINCLITE. It had laud clicks. On visual inspection one head had fallen off so i swapped the heads.

Now the drive doesn't ID at all. On start up it makes slight recalibration noise (i hope) showing DRD DSC - can hear the motor start to spin-down.

The drive does not ID (no Model, SN, FW, or Size),The client swears they haven't touched the board - i checked a compatible board behaves nearly identically. I had backed up resources from the donner and so when trying to LDR file Loading and recalibrate it gave me the following.

Interested in your thoughts on next steps..

 

[pclab]

Maybe heads not fully compatible....

 

[jol]

On visual inspection one head had fallen off so i swapped the heads.

have you tried to disable the bad head ?

The client swears they haven't touched the board

never believe the client check for yourself

connect the PCB only
read the ROM
search the ROM (in HEX) for the WWN

 

[protech]

Maybe heads not fully compatible....

Thanks for the reply
Compatibility criteria was: Full Model number, country and firmware.

 

[protech]

Head was physically broken and hanging so disabling is not an option or could risk damaging the media.

 

[pclab]

If the client tried to power on several times the hdd, and the heads were as bad as you said, maybe already media damage...

 

[Jared]

Maybe heads not fully compatible....

Thanks for the reply
Compatibility criteria was: Full Model number, country and firmware.

How about the DCM code? Does the middle of it match?

 

[protech]

DCM
Patient: DHRNNT2CHN
Donner: HBRNNT2CGN

Thanks

 

[Jared]

That should be a match as long as the date isn't too far off. Probably SA damage as pclab is suggesting. Maybe with hot swap you could read SA tracks through composite and do a smart hot swap, but may not work anyway.

 

[Jared]

@jol I never realized the WWN was in the ROM code. I've tried finding other identifiers such as serial in the ROM before but never thought to look for that. Thanks!