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ST2000LX001 PCB ROM Location

January 7th, 2019, 10:29

Hi,

Can anyone confirm that the ROM information is kept on the Marvel BGA chip as shown in image attached.

We had a situation were we have physically swapped the patient Marvel chip from the damaged PCB to a good donor PCB. When we read the ROM through boot code the serial number is the same as the previous donor ROM information. Is the terminal getting this from somewhere else on the donor PCB board?

Would appreciate your feedback
Attachments
image001.jpg

Re: ST2000LX001 PCB ROM Location

January 7th, 2019, 14:32

IIRC, the ROM is that tiny BGA chip above the MCU and to the right of the SDRAM. If you can tell us its markings, I should be able to locate its datasheet.

Re: ST2000LX001 PCB ROM Location

January 7th, 2019, 19:20

It's also very likely that the info is being pulled 100% from that NAND chip. It is an SSHD after all, so it'll only re-read the ROM if you wipe the NAND.

Re: ST2000LX001 PCB ROM Location

January 8th, 2019, 5:30

Thanks for your replies. I have written the codes on the new image. Also I can't remember if the NAND has been reinitialised yet.
Attachments
image001 2.jpg

Re: ST2000LX001 PCB ROM Location

January 8th, 2019, 6:32

W25Q80BWBY, Winbond, 8M-bit serial flash memory, 1.8V, marking 3Axx, WLBGA-8:
https://www.macrogroup.ru/docs/1348

NCP708, ON Semiconductor, 1A, 3.3V, 1% Precision, Very Low Dropout Voltage Regulator, marking 708 + 330, UDFN-6:
http://www.onsemi.com/pub/Collateral/NCP708-D.PDF

Re: ST2000LX001 PCB ROM Location

January 8th, 2019, 9:13

+1 ROM is WLBGA8
Attachments
WLBGA-100792364.jpg
WLBGA-ROM-ST1000LX015
WLBGA-100792364.jpg (75.18 KiB) Viewed 2506 times

Re: ST2000LX001 PCB ROM Location

January 8th, 2019, 14:43

Fiddly little buggers to switch as well!

Re: ST2000LX001 PCB ROM Location

January 9th, 2019, 12:29

Cheers perfect, now have the ROM to write to donor PCB. We want to initialise the Nand on the donor PCB and have tried the Kahuna patch but get objects not found error. Any ideas ?

Re: ST2000LX001 PCB ROM Location

January 10th, 2019, 1:59

This is not Kahuna family , that's why the patch is not working. These are Rosewood SSHD drives. No Rom patch as far as I know.

Re: ST2000LX001 PCB ROM Location

February 20th, 2019, 16:27

still, there are some tricks to get it out of dead state...
pepe
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