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FDD412A/B
new
track
positions,
and
signals
the
absolute
amount
of displacement.
Operation
mode
Not
in write
Seek
operation
is inhibited
for
check
in FDD
mode
580
us
following
WRITE
GATE-N
(directing
write
mode).
Of the
4 phases
of step
motor
winding,
2 phases
are
driven
at a
time.
Step
motor
switched
for
exciting
phase
control
approx.
0.5 mm/step
Head
positioned
Fig. 2.11
Outline
of Seek Operation
aye
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