All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: Seagate SAS SSD (ST200FM0053) - how to get diagnostic mode ?
PostPosted: March 10th, 2018, 18:26 
Offline

Joined: March 10th, 2018, 17:04
Posts: 4
Location: Europe
Dear gurus,

I can enter into diagnostic menu of regular Seagate SATA drive and do ctrl-l or ctrl-a to see details, e.g. Seagate Momentus 7200.4

However I need to do the same with Seagate ST200FM0053or ST200FM0073 and I can't get into diagnostic menu. I spent days trying different baud rates, RX/TX pins but nothing works. It looks like that this port is not serial port at all, or speks some very different language. I also noticed that this little ssd has additional unknown port on the front side that might be some diagnostic port instead.

Does anyone have any pin layout or details on this SAS SSD or any other Seagate similar SSD that might help me ?

Thanks in advance


Top
 Profile  
 
 Post subject: Re: Seagate SAS SSD (ST200FM0053) - how to get diagnostic mo
PostPosted: March 12th, 2018, 2:52 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 11024
Location: Australia
Detailed photos of both sides of the PCB might help. Perhaps there are safe mode shorting points on the PCB?

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: Seagate SAS SSD (ST200FM0053) - how to get diagnostic mo
PostPosted: March 12th, 2018, 13:46 
Offline

Joined: March 10th, 2018, 17:04
Posts: 4
Location: Europe
fzabkar wrote:
Detailed photos of both sides of the PCB might help. Perhaps there are safe mode shorting points on the PCB?

Hereby the images. I don't see any jumpers; and I don't see serial controller chip next to serial interface, unless it's in controller itself. On the first slide you can see unknown front connector.


Attachments:
20180312_182311_HDR.jpg
20180312_182311_HDR.jpg [ 4.26 MiB | Viewed 2091 times ]
20180312_182300_HDR.jpg
20180312_182300_HDR.jpg [ 3.92 MiB | Viewed 2091 times ]
Top
 Profile  
 
 Post subject: Re: Seagate SAS SSD (ST200FM0053) - how to get diagnostic mo
PostPosted: March 12th, 2018, 16:39 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 11024
Location: Australia
I can't see the IC markings in your photos. Do you have a CCD scanner (not CIS)?

In the absence of any better methods, would it make sense to disable the power to the NAND array? Would this cause the SSD to output a message to the terminal port? If this approach is of interest to you, we would need to identify the buck regulator ICs and measure their outputs. Then we could locate the corresponding bypass capacitors at the NANDs.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: Seagate SAS SSD (ST200FM0053) - how to get diagnostic mo
PostPosted: March 12th, 2018, 17:00 
Offline

Joined: March 10th, 2018, 17:04
Posts: 4
Location: Europe
Nah, markings on IC are invisible; black on black, and it's so small that best camera zoom can't help and certainly not readable by eye.

Referring to your proposal - I can't do it, multimeter pins are too big and board is too tiny and my hands are too big LOL - not that I care about damaging SSD, it's 70% of life, so can't be used for cachecade (what I use them for).

I will leave this topic sit here, maybe someone from future has some schematics or service manual comes across and gives a hint.

Thanks for your effort.


Top
 Profile  
 
 Post subject: Re: Seagate SAS SSD (ST200FM0053) - how to get diagnostic mo
PostPosted: March 14th, 2018, 18:01 
Offline
User avatar

Joined: August 9th, 2007, 8:40
Posts: 792
Location: United Kingdom
What sort of multimeter probes do you have? Anyway, You can get good quality fine tipped probes from farnell.

_________________
<itch>
скратчи
If you can keep your head when all about you are losing theirs, you probably don't fully understand the situation. ... Mr Kipling


Top
 Profile  
 
 Post subject: Re: Seagate SAS SSD (ST200FM0053) - how to get diagnostic mo
PostPosted: March 15th, 2018, 4:28 
Offline

Joined: March 10th, 2018, 17:04
Posts: 4
Location: Europe
So does anyone know what is this connector port on the opposite side of the sas data connector ? it looks like micro hdmi or something; I wonder is it diagnostics or some kind of expansion connector for SSD....


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: jerovsek and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group