With PC3000 UDMA:
I'm working with a Seagate ST330831AS that stays in busy mode and will not come ready. I've tried two different PCBs, transplanting the ROM each time.
The drive spins up but I can't detect a seeking noise. I have not opened it.
Here's the odd thing: If I remove the PCB from the drive, serial access works fine and the ROM can be read and written. However, once I put the PCB back on the drive the serial access will time out and I can't access terminal mode.
If I do a power cycle within the utility, this is the message in Terminal:
Interface task reset
4096 x 16 buffer detected
Tonka-1_Disk S.00 01-11-05 11:50
However, the drive comes out of busy and all of the user commands time out.
What gives?
Thanks
Jon
Reply:
Hello jono my suggest check the platters we had check , many seagate´s with tendence to head crash 
If I remove the PCB from the drive, serial access works fine and the ROM can be read and written. However, once I put the PCB back on the drive the serial access will time out and I can't access terminal mode.
Maybe u got a shortcut between PCB and MHA, maybe there are some problems a shorcut on the MHA; last year we got a Hitachi problem, on that case i put a piece a paper between the MHA flex connection and PCB, to know the problem and the solution
Best Regards
Alberto
Reply:
Thanks, Alberto. I'll try the paper over the MHA contacts. Some drives require communicating with the MHA before they will POST and spin up. I seem to remember that Seagate is one of them, but I'll soon find out.
Jon
Reply:
I have same problem for the segate ts3250823ace db35.1 family harddisk.
can you have get any solution for your poblem?
thanks
amit shah
Reply:
If I recall correctly, there was a short in either the VCA or the head stack that caused this problem.
Jon
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