Toshiba S300 HDWT140UZSVA PCB G3626A [ Rom ? ]

[Amarbir[CDR-Labs]]

Hello,
Does anyone know which is the actual ROM chip on these ,The board has the following roms

1 : IC10 @ Winbond 25Q80BL
2 : IC9 @ Winbond 25Q80DL1G or IG in End
3 : IC11 Same as IC9
4 : IC12 Same As IC9

PS : IC12 is what they say is the ROM ,Is this True To Toshiba S300 HDD Also .

[fzabkar]

https://forum.hddguru.com/viewtopic.php?f=1&t=37261

I believe IC10 is the ROM. I suspect that IC9, IC11 and IC12 contain cached data for power loss data protection.

If you can dump the contents of each chip, one of us may be able to better answer your question.

[HddDonorMarket]

Google search says IC12 Rom

[Amarbir[CDR-Labs]]

Well,
i am also quite sure its IC10 as it ends with BL and Rest All With DL , It would be interesting to desolder all of them and examine the dumps ,Plus it will help us all in the future ,I will do it tommorow for sure for everyone including my research .

[Amarbir[CDR-Labs]]

Google search says IC12 Rom

True ,
But Lets See it tommorow ,Might be someone can do this faster then me and attach roms here .

[fzabkar]

deleted

[Amarbir[CDR-Labs]]

deleted

Hi,
+12V Line Was Short To GND and i repaired the board itself ,But now the heads are in clicking state too ,Hence gave a quotation and if its approved will swap heads and after recovery take backup of all roms and post it here

[Amarbir[CDR-Labs]]

Fzabkar ,
i was able to repair the original PCB ,But this Drive Has Bad Heads too ,i will replace those and once job is done make a eprom dump of all roms for you here

[pepe]

Keep in mind that by posting the contents here you may disclose user data if they are used as NVC.
pepe

[Amarbir[CDR-Labs]]

Keep in mind that by posting the contents here you may disclose user data if they are used as NVC.
pepe

Hi ,
Thanks I will keep that in mind

[fzabkar]

You could ZIP the ROMs and use a password for access.

[Amarbir[CDR-Labs]]

Hello Fzabkar ,

I use My Python EPROM Programmer ChipProg-40 to Read the ROMS ,This is what i found out ,I have not parsed with Main ROM But the observations are here .

1 : ROM-04276-II is IC10 "Main ROM"
2 : ROM-04276 IC9 " Contained All FF "
3 : ROM-04276 IC11 "Contained All FF With Toshiba Signatures "
4 : The Last ROM IC12 Was Just Like IC9 all FF's i did not take a copy then

You Would be surprised that After removing TVS the board was behaving like a other similar board but heads were clicking but a Board Swap did solve the issue ,Head of this HDD was swapped but its original head also worked in donor ,This is how i came to know about the entire story ,I would say IC10 is fine to be swapped but a person should check other three ROMS also and if they have data they should also be swapped ,I read some similar threads were someone says only rom swapped ic10 did the trick while the other guy said he swapped all 4 IC's ,I think its better to check all the other three IC also .I still have DONOR board IC out that i will also read and share here for your reference .

Attachments

Toshiba S300 ROMS.zip

(434.34 KiB) Downloaded 210 times

[fzabkar]

I have extracted the CPs.

Attachments

CPs_00.7z

(20.42 KiB) Downloaded 197 times