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Difficulties to access sectors on a ZEUS WD5000KS-00MNB0
http://forum.hddguru.com/viewtopic.php?f=11&t=22320		 Page 1 of 1
Author:  hdrescue [ March 8th, 2012, 11:51 ]
Post subject:  Difficulties to access sectors on a ZEUS WD5000KS-00MNB0
Hello Guys

I received one WD5000KS-00MNB0 500GB Marvell Zeus with damaged pcb. I was able to copy the ROM and ROM modules from the patient pcb. After that I copy ROM to a compatible donor pcb. The drive made the click noise 3 times and the keep spinning, never stops and never become ready state.
I have a compatible working donor drive and was able to do a hot swap and saved all the modules and tracks from patient.

Next step was trying to do a smart hot swap. The microjogs ware close so I try it and fallow all the procedures for the smart swap but finely when I tried to do the "standby" command the drive power off and on again.

after this tried to copy each module individually to see if it was because of some module. I saw that with the modules 03 and 31(translator) the drive do the power off when I use "standby" command. Other thing I noticed as soon I copy the adaptive modules from patient to the donor drive he start doing a power with a lag of 1min. With all the other modules the drive can perform the "standby" command. I know without the original 03 and adaptive modules I could not read sectors.

After this I tried to remove head by head(0,1,2,3,4,5,6,7) in ROM heads map and removing the number 7 the drive become in ready state. Opened a task and made the heads map, remove the number 7 and was able to read well the first 220.000 sectors, after this in giving me error in all heads.

Do you guys already saw something like this? any ideas why the standby command is not working with all the modules from patient?
Any ideas on what to do now?

Thanks :)
Author:  F_ARG [ March 8th, 2012, 14:17 ]
Post subject:  Re: Difficulties to access sectors on a ZEUS WD5000KS-00MNB0
Hello,

If you turn off head 7 translator won´t load correctly, so i think that is why you can only read some few sectors. Seems to be a head 7 problem. May be, if you wait some time after the HDD stop clicking you can reach ready state and do RAM head map procedure.

Best Regards, F
Author:  positivebit [ March 8th, 2012, 17:17 ]
Post subject:  Re: Difficulties to access sectors on a ZEUS WD5000KS-00MNB0
F_ARG wrote:
Hello,

If you turn off head 7 translator won´t load correctly, so i think that is why you can only read some few sectors. Seems to be a head 7 problem. May be, if you wait some time after the HDD stop clicking you can reach ready state and do RAM head map procedure.

Best Regards, F


i think he did a head map in DE with patient drive, than performed a smart hot-swap.

Zeus do not perform well stand-by if there is something demaged in some modules, did u try to see in ALL modules if there is DE-AD pattern?
Author:  hddguy [ March 9th, 2012, 5:12 ]
Post subject:  Re: Difficulties to access sectors on a ZEUS WD5000KS-00MNB0
It sounds like head map in DE was made, but:

hdrescue wrote:
was able to read well the first 220.000 sectors, after this in giving me error in all heads.



this is typical of cases where head map is not native.

But this:

hdrescue wrote:
The drive made the click noise 3 times and the keep spinning, never stops and never become ready state.


leads me to believe the problem is somewhere else than heads anyway

Can you get access to SA without hotswap? Short circuit maybe?
Author:  hdrescue [ March 9th, 2012, 12:14 ]
Post subject:  Re: Difficulties to access sectors on a ZEUS WD5000KS-00MNB0
Hello guys

First of all thanks for your help.

I tried to wait for the drive get ready but I waited more then 30min and it was power off and on all the time.

Quote:
Zeus do not perform well stand-by if there is something demaged in some modules, did u try to see in ALL modules if there is DE-AD pattern?


I read from each copy of the modules individually and all the modules are working fine.

Quote:
leads me to believe the problem is somewhere else than heads anyway

Can you get access to SA without hotswap? Short circuit maybe?


Please let me know how to do the short circuit procedure. Can be a chance..

Thanks
Author:  hddguy [ March 9th, 2012, 12:59 ]
Post subject:  Re: Difficulties to access sectors on a ZEUS WD5000KS-00MNB0
Not sure off hand, maybe pins P9 and P10? Cant really check it now, maybe someone else here can confirm it for you.
Author:  unknown [ March 11th, 2012, 9:04 ]
Post subject:  Re: Difficulties to access sectors on a ZEUS WD5000KS-00MNB0
hddguy wrote:
Not sure off hand, maybe pins P9 and P10? Cant really check it now, maybe someone else here can confirm it for you.

Completely correct.
Author:  hdrescue [ March 12th, 2012, 12:56 ]
Post subject:  Re: Difficulties to access sectors on a ZEUS WD5000KS-00MNB0
I tried to use short circuit but the drive just power off and immediately power on again.

Running out of ideas.. Any more procedures you know that I could try?

Thanks
Author:  hdrescue [ March 13th, 2012, 8:53 ]
Post subject:  Re: Difficulties to access sectors on a ZEUS WD5000KS-00MNB0
Going to swap the head´s to see if it work fine.

Let you guys know the result asap.

Thanks
Author:  pcimage [ March 14th, 2012, 18:08 ]
Post subject:  Re: Difficulties to access sectors on a ZEUS WD5000KS-00MNB0
hdrescue wrote:
Going to swap the head´s to see if it work fine.

Let you guys know the result asap.

Thanks


Good luck!

You have PM
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