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 Post subject: MRT USB Terminal Port Doesn’t connect to seagate Hard Drives
PostPosted: May 25th, 2023, 20:36 
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Joined: May 7th, 2023, 20:12
Posts: 26
Location: Earth
Hello

I have a problem getting the USB terminal to work. I tried to connect it to different working seagate drives and every time there is no information in the terminal section. Also in the Other information (on the right side of disk information) it shows : COM:Connect Voltage: N/A Rate:38400

I tried to reinstall the driver
Tried to reconnect it making sure it’s connected the right way
Talked to MRT support they couldn’t help
I check the voltages on the Terminal board and it has 1.9V on the green light. On the big orange caps one is 5V and one is 3.2V

Any help would be appreciated


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 Post subject: Re: MRT USB Terminal Port Doesn’t connect to seagate Hard Dr
PostPosted: May 25th, 2023, 22:18 
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Joined: September 8th, 2009, 18:21
Posts: 15461
Location: Australia
I have identified the ICs for you:

http://www.hddoracle.com/viewtopic.php?f=175&t=2693
http://www.hddoracle.com/viewtopic.php?f=147&t=2695

I would connect the adapter to a USB port and use PuTTY to talk to it. Connect the Tx and Rx pins together and then type stuff on your keyboard. You should see your typed characters being echoed.

You may need to install Prolific's USB-TTL driver.

If you don't see anything, then create a 1MB file consisting of the character "0x55" or the uppercase letter "U" (alternate 1s and 0s) and then transmit this file to the adapter's COM port. Select the lowest baud rate and then trace the signal path on an oscilloscope.

_________________
A backup a day keeps DR away.


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 Post subject: Re: MRT USB Terminal Port Doesn’t connect to seagate Hard Dr
PostPosted: May 26th, 2023, 0:25 
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Joined: May 7th, 2023, 20:12
Posts: 26
Location: Earth
fzabkar wrote:
I have identified the ICs for you:

http://www.hddoracle.com/viewtopic.php?f=175&t=2693
http://www.hddoracle.com/viewtopic.php?f=147&t=2695

I would connect the adapter to a USB port and use PuTTY to talk to it. Connect the Tx and Rx pins together and then type stuff on your keyboard. You should see your typed characters being echoed.

You may need to install Prolific's USB-TTL driver.

If you don't see anything, then create a 1MB file consisting of the character "0x55" or the uppercase letter "U" (alternate 1s and 0s) and then transmit this file to the adapter's COM port. Select the lowest baud rate and then trace the signal path on an oscilloscope.


Thank you for your help and all the details you've provided. my problem solved after reinstalling the driver for the 4th time. I think it wasn't installed properly or something wrong with the windows... not sure but it's working now.


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 Post subject: Re: MRT USB Terminal Port Doesn’t connect to seagate Hard Dr
PostPosted: May 26th, 2023, 9:29 
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Joined: December 5th, 2011, 5:38
Posts: 1626
Location: Italy
Seagate's triangular pcbs have terminal lock, but you should get a response from terminal screen in mrt when you power on the drive.
Maybe you could try terminal on a "normal easy" seagate drive as 7200.11 and see if terminal works with it.
If terminal works with 7200.11 hdd then the problem is relative to terminal lock or some pcb issues.
If you still don't get anything on terminal, then most likely terminal adapter drivers are corrupt or the adapter is faulty... or some issues with usb pc connection.

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My firmware database:
https://mega.nz/folder/O01DkBRI#MxP2J6ZNqXDcrX40I8MoQQ


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