20 Jul
2002
20 Jul
'02
12:19 p.m.
On Sun, 21 Jul 2002, Tony Duell wrote:
The V170 I have does not have that, so I guess it probably does not have a
head lock solenoid.
-Toth
No idea, but I
imagine if the earlier V150 drives did, the V170 likely
THinking about it some more, I now seem to remember that the head lock
was only present on drives using the servo board _without_ the bybrids.
does too. There is a small dip relay on the
second board, which I'd
imagine would be used for such a solenoid...
No, the relay is almost certainly the spindle motor brake. The head lock
solenoid was driven by a power transistor transistor. IIRC the head lock
iteslf was a cylindrical metal housing on the bottom of the HDA next to
the spindle motor. It fitted through a hole in the servo board and had a
2 wire cable that plugged into the servo board alongside the hole.