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gameboybin
 Post subject: Seagate ST1000LM035 DSC FAIL after head change. Error in ROM
PostPosted: May 10th, 2024, 3:55 
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Joined: April 17th, 2022, 22:39
Posts: 252
Location: Vietnam
I have this Seagate ST1000LM035-1RK72 WQ9283K7 FW:0001 which is weak and died upon recovery.

Changed new sets of heads > was clicking for a while > got DSC FAIL error > Performadoubledownloadwithoutapowercycle > goes into DRD state > but cannot do anything

Upon unlocking Tech mode i noticed this errors.

What can i do in this situation??
Anyone can help?

Thanks!


Attachments:
File comment: ROM Unlocking ERROR
436592361_3706898886305250_604240151697957729_n.jpg
436592361_3706898886305250_604240151697957729_n.jpg [ 119.97 KiB | Viewed 3867 times ]
File comment: Error after changing heads
436045188_447854014398254_4627548088527246700_n.jpg
436045188_447854014398254_4627548088527246700_n.jpg [ 138.3 KiB | Viewed 3867 times ]
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fzabkar
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 10th, 2024, 4:49 
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Joined: September 8th, 2009, 18:21
Posts: 17091
Location: Australia
The "used space" and "whole space" checksum errors are bogus. Segment 2B contains SMART attribute data.

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pepe
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 10th, 2024, 6:05 
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Joined: October 3rd, 2005, 0:40
Posts: 4779
Location: Hungary
check if pcb is native

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gameboybin
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 12th, 2024, 22:57 
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Joined: April 17th, 2022, 22:39
Posts: 252
Location: Vietnam
pepe wrote:
check if pcb is native


yes. its native
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gameboybin
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 12th, 2024, 23:01 
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Joined: April 17th, 2022, 22:39
Posts: 252
Location: Vietnam
fzabkar wrote:
The "used space" and "whole space" checksum errors are bogus. Segment 2B contains SMART attribute data.


By bogus: you mean they are fake?? Fake logs?
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fzabkar
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 13th, 2024, 0:12 
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Joined: September 8th, 2009, 18:21
Posts: 17091
Location: Australia
gameboybin wrote:
fzabkar wrote:
The "used space" and "whole space" checksum errors are bogus. Segment 2B contains SMART attribute data.


By bogus: you mean they are fake?? Fake logs?

No, the data is OK, but there are no checksums. PC3000 is wrong.

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gameboybin
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 13th, 2024, 2:58 
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Joined: April 17th, 2022, 22:39
Posts: 252
Location: Vietnam
fzabkar wrote:
gameboybin wrote:
fzabkar wrote:
The "used space" and "whole space" checksum errors are bogus. Segment 2B contains SMART attribute data.


By bogus: you mean they are fake?? Fake logs?

No, the data is OK, but there are no checksums. PC3000 is wrong.



Ok that means. The heads must be incompatible
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northwind
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 13th, 2024, 9:02 
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Joined: January 28th, 2009, 10:54
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Location: Greece
No.
It means PC3k gives false negatives.

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fzabkar
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 13th, 2024, 15:32 
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Posts: 17091
Location: Australia
gameboybin wrote:
fzabkar wrote:
gameboybin wrote:
fzabkar wrote:
The "used space" and "whole space" checksum errors are bogus. Segment 2B contains SMART attribute data.


By bogus: you mean they are fake?? Fake logs?

No, the data is OK, but there are no checksums. PC3000 is wrong.



Ok that means. The heads must be incompatible

Use F3RomExplorer to extracts those segments to a file, then analyse the files with a hex editor.

https://www.hddoracle.com/viewtopic.php?p=18531#p18531

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gameboybin
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 16th, 2024, 0:12 
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northwind wrote:
No.
It means PC3k gives false negatives.


Yeah i mean if it is false negatives. Then what could the problem be??
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fzabkar
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 16th, 2024, 2:07 
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Joined: September 8th, 2009, 18:21
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Location: Australia
Do the new heads still work in the donor drive?

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pepe
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 16th, 2024, 4:58 
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Joined: October 3rd, 2005, 0:40
Posts: 4779
Location: Hungary
the error means drive can read servo fine but cannot sync on sector, on both sa copies, which suggests it is looking at wrong location, which typically happens if rom is not native or head map is screwed.
Or both heads are weak, but i consider that having less chance.

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gameboybin
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 16th, 2024, 5:00 
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Joined: April 17th, 2022, 22:39
Posts: 252
Location: Vietnam
fzabkar wrote:
Do the new heads still work in the donor drive?



Yes. They work flawlessly!
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unknown
 Post subject: Re: Seagate ST1000LM035 DSC FAIL after head change. Error in
PostPosted: May 16th, 2024, 10:03 
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Joined: October 21st, 2007, 8:48
Posts: 1721
I would say this is a typical issue of scratches to the surface that preventing heads from loading SA.
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