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ST9750420AS

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unknown

Post subject: ST9750420AS

Posted: August 2nd, 2016, 16:11

Joined: October 21st, 2007, 8:48
Posts: 1712

Hello,
Terminal output:
EarlySpinup Enabled
Rst 0x10M
ExecuteSpinRequest
LED:00000067 FAddr:00380338
LED:00000067 FAddr:00380338
I need to know which points for read channel.
Thanks in advance friends.
Attached pictures and ROM :

Attachments:

ROM.rar [434.58 KiB]
Downloaded 413 times

IMG_20160802_215606.jpg [ 1.59 MiB | Viewed 5346 times ]

IMG_20160802_215546.jpg [ 1.9 MiB | Viewed 5346 times ]

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fzabkar

Post subject: Re: ST9750420AS

Posted: August 2nd, 2016, 16:26

Joined: September 8th, 2009, 18:21
Posts: 16960
Location: Australia

Measure the voltages at the indicated test points.That should help us to differentiate between the read and write channels.

Attachments:

R_W_channels.jpg [ 111.8 KiB | Viewed 5340 times ]

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unknown

Post subject: Re: ST9750420AS

Posted: August 2nd, 2016, 18:11

Joined: October 21st, 2007, 8:48
Posts: 1712

Thanks for the reply Mr. Frank.
I will get to the office tomorrow and post the results.
Thank you.

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datahdd116

Post subject: Re: ST9750420AS

Posted: August 3rd, 2016, 6:02

Banned User

Joined: January 1st, 2016, 11:12
Posts: 90
Location: Viet nam

fzabkar wrote:

Measure the voltages at the indicated test points.That should help us to differentiate between the read and write channels.

wow good

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unknown

Post subject: Re: ST9750420AS

Posted: August 3rd, 2016, 9:21

Joined: October 21st, 2007, 8:48
Posts: 1712

Thank you Mr. Frank :

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R_W_channels.jpg [ 57.94 KiB | Viewed 5248 times ]

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eng.mas

Post subject: Re: ST9750420AS

Posted: January 25th, 2017, 7:28

Joined: January 1st, 2015, 9:04
Posts: 138
Location: palestine

unknown wrote:

Thank you Mr. Frank :

I have similar case
So, The read channel the two point in the left side or in the right

and can you give me a procedure for how to apply this to get terminal access?

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