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February 29th, 2016, 12:19
Hello,
In order to see if heads are OK, can I measure points on the HDD with multimeter/oscilloscope? Does someone do thsi type of test?
Suggestions to test heads?
Thanks,
February 29th, 2016, 17:15
What I know to test with a multimeter is to check for motor problems. Not heads. I find it hard to be possible to check.
Even the head test of the tools aren't 100% full proof...
February 29th, 2016, 17:56
Some preamps have an ABHV / DBHV (Analogue / Digital Buffered Head Voltage) pin. I don't know whether current preamps have the same pin, but it appears that this pin senses the head voltage directly, before it is amplified. I could be wrong, though.
Preamp Block Diagrams:
http://www.hddoracle.com/viewtopic.php?f=59&t=229http://www.hddoracle.com/download/file. ... &mode=view
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