Hi all,

How do I use with a serial communication?
How and where do I connect the right cable (serial communication) which in the picture?
http://en.hydata.com/notice-ID=28.html

I don't have such connections on my hard drive.

Thank you all!!

Here are repair procedures for Seagate 7200.11 drives:

http://sites.google.com/site/seagatefix/

http://www.msfn.org/board/index.php?showtopic=128807

Tutorial with photos:

http://www.overclock.net/hard-drives-st ... -pics.html

Pinout of Nokia CA-42 cable's Pop-port connector (use pins 6,7,8):

http://pinouts.ru/CellularPhones-Nokia/ ... nout.shtml

See the following technical bulletin:

http://atulchitnis.net/files/seagate.pdf

Seagate were at one time offering free data recovery services to those customers whose drives were affected by the bug. This may still be the case.

Hi

Thank you for the quick response.
Is this serial communication can be helpfull for other hard drive?
such as WD/Hitachi/Sumsong ETC..

Thank You very much!

Sorry for my delay. I was hoping one of the DR specialists would answer your question.

What I can say is that the TTL RS232 interface circuits generally have 5V outputs whereas the typical MCUs on modern hard drive PCBs appear to be 3.3V devices, or less. Even so, these MCUs probably have 5V tolerant inputs, which means that they won't be damaged by latchup, etc.

To circumvent any potential problem, some interface designs clamp the TTL outputs with a 2.7V zener diode. I don't do this myself. Instead I avoid the latchup issue by tapping into the same voltage source as the target device. However, this approach requires more knowledge and efffort.

BTW, I use these same circuits to access the EEPROMs and MCUs in ADSL modems, DVD players, etc.

Samsung also has terminal output, but it is not as useful for fixing the drive as it is on Seagate. Keep in mind the interfaces communicate in proprietary language, so each is very different. Even within the same manufacturer they make revisions. This interface is not intended for the user to know about; it is for internal use, but DR pros figured out that it can be used for many purposes.