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 Post subject: USB ST1000LM025 HN-M101ABB/ESG spins down...
PostPosted: September 11th, 2019, 7:08 
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Joined: September 11th, 2019, 6:40
Posts: 4
Location: Russia
Hello!
I am a newbie here, so please excuse dumb questions - my main work field is laptop repair.
The customer brought in an external USB 3.0 HDD Seagate Expansion SRD0NF1 fpr data recovery.
Upon connecting power (USB micro-B) it spins up, reads for a second like a good drive and spins down. To start it up again I have to cycle the power.
The drive still responds to terminal commands, though.

Power on terminal readout is as follows:

Fw Active 00
Ovly loaded to 0x00014D00
Ovly loaded to 0x1002DF50
FdtTable Loaded. Rev:0x02
Unknown file id 384
Up MC

PwrOn RRO1x @ H0
Table) cos = 383488, sin = 476928
Coeff) cos = -49444, sin = -3549

DiskSlip : 86 [SrvTrk]
DiskSlip : 81 [SrvTrk]
0. phs diff 6 [wedges] Table) 55, coef) 61

PwrOn RRO1x @ H2
Table) cos = 379392, sin = 481280
Coeff) cos = -60397, sin = -3953

DiskSlip : 86 [SrvTrk]
DiskSlip : 83 [SrvTrk]
4. phs diff 4 [wedges] Table) 56, coef) 60
TgtCyl: 832
Hd: 2 Zn: 0 Avg.:- 78
TgtCyl: 266064
Hd: 2 Zn: 1 Avg.: 1047

SVCAL(0080,0000)-->PASS
RdyTm = 3617474 us 3617303
ENG>mS1 00000003
SK C:157088 H:0
LUL(2)ms
SC(U)..4168/171
UD..OK : 171
PK_4 C: 21 H:1

I have tried RT command:
ENG>RT
ActiveFW : 00
FWVer : 0001
SATA PLL cal done
DDR size detected = 8MB
DDR size detected = 8MB
*PAUNI_L2958*PA VID=0011 PN=000D Rev=0001- PA_LSI2958 Found
*PAUNI_L2958*PA VID=0011 PN=000D Rev=0001- PA_LSI2958 FoundU
S_0SO_1
SPU@28'C,4731mV
IS=5
CLA ..36/94
HO..OK
HO RPM=595 OK
AC 2071
ST..OK
mS1 00000003
GT:408
SC(L):4169/85
BE.N:24
LD..OK
SK C: 7667 H:0
Loaded FIT ( 0: 0: 1)
CalibTable Loaded. Rev:0x1B
ResoTable Loaded. Rev:0x01
Bump Limit Loaded. Rev:0x01
RRO1xTable Loaded. Rev:0x01
Fw Active 00
Ovly loaded to 0x00014D00
Ovly loaded to 0x1002DF50
FdtTable Loaded. Rev:0x02
Unknown file id 384
Up MC

PwrOn RRO1x @ H0
Table) cos = 383488, sin = 476928
Coeff) cos = -107867, sin = 25536

DiskSlip : 86 [SrvTrk]
DiskSlip : 81 [SrvTrk]
0. phs diff 12 [wedges] Table) 55, coef) 67

PwrOn RRO1x @ H2
Table) cos = 379392, sin = 481280
Coeff) cos = -93610, sin = 27865

DiskSlip : 86 [SrvTrk]
DiskSlip : 86 [SrvTrk]
4. phs diff 8 [wedges] Table) 56, coef) 64
TgtCyl: 832
Hd: 2 Zn: 0 Avg.:- 72
TgtCyl: 266064
Hd: 2 Zn: 1 Avg.: 1051

SVCAL(0080,0000)-->PASS
RdyTm = 3541109 us 3540938


[DIPM_TMOUT:00000000]
ENG>mS1 00000003
SK C:160443 H:0
mS1 00000003
LDed
SK C: 7423 H:0
SC(U)..4169/243
UD..OK : 243
PK_4 C: 53 H:0

healing Enable 003C 001E 0000 001E

After this command the spindle stayed on.

I will greatly appreciate any advice how to solve this and what could cause the failure.
What can I do to dig deeper into this issue?
Soldering skills present.

Thank you very much for your help and understanding!


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 Post subject: Re: USB ST1000LM025 HN-M101ABB/ESG spins down...
PostPosted: September 11th, 2019, 7:53 
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Joined: November 29th, 2006, 10:08
Posts: 7463
Location: UK
This is a Samsung technology drive, I have occasionally seen the PCB to cause this issue.

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 Post subject: Re: USB ST1000LM025 HN-M101ABB/ESG spins down...
PostPosted: September 11th, 2019, 13:07 
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Joined: September 11th, 2019, 6:40
Posts: 4
Location: Russia
pcimage wrote:
I have occasionally seen the PCB to cause this issue.


Thank you for prompt response.
You mean, exactly the same behavior? Spinning down after a few seconds?
Did PCB replacement solve the problem in your case?


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 Post subject: Re: USB ST1000LM025 HN-M101ABB/ESG spins down...
PostPosted: September 11th, 2019, 14:03 
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Joined: November 29th, 2006, 10:08
Posts: 7463
Location: UK
michaeleangelo wrote:
pcimage wrote:
I have occasionally seen the PCB to cause this issue.


Thank you for prompt response.
You mean, exactly the same behavior? Spinning down after a few seconds?
Did PCB replacement solve the problem in your case?


Yes, but it was a very rare circumstance.

It really needs proper diagnosis.

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 Post subject: Re: USB ST1000LM025 HN-M101ABB/ESG spins down...
PostPosted: September 12th, 2019, 3:10 
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Joined: September 11th, 2019, 6:40
Posts: 4
Location: Russia
pcimage wrote:
It really needs proper diagnosis.

Yes, this is why I have attached the terminal output, hoping that someone will be able to analyze it. :-)


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 Post subject: Re: USB ST1000LM025 HN-M101ABB/ESG spins down...
PostPosted: September 12th, 2019, 4:02 
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Joined: September 8th, 2009, 18:21
Posts: 11714
Location: Australia
Can you power then drive from a powered USB hub?

Does the drive behave any differently on a USB 2.0 port? I'm wondering whether the USB data lines may be open circuit.

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 Post subject: Re: USB ST1000LM025 HN-M101ABB/ESG spins down...
PostPosted: September 12th, 2019, 10:09 
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Joined: September 11th, 2019, 6:40
Posts: 4
Location: Russia
fzabkar wrote:
Can you power then drive from a powered USB hub?

Yes, it does the same without USB lines - starts and stops after 5-7 seconds.
I have soldered +5V directly to the board - all the same.

fzabkar wrote:
Does the drive behave any differently on a USB 2.0 port?

Nope. :-)

fzabkar wrote:
I'm wondering whether the USB data lines may be open circuit


THANK YOU VERY VERY MUCH!!!
You saved it! And so my day. :-)
The culprit was the connector - most of its pins were open circuit but power and one USB2 pin.
Replacing the connector brought it back to life.

Thank you for your support, it is priceless.


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