Fujitsu MPG3XXXAH-E Manual Do Utilizador
C141-E116-01EN
4 - 2
4.2.2
Head
Figure 4.1 shows the read/write head structures. The Numerals 0 to 3 indicate read/write heads.
These heads are raised from the disk surface as the spindle motor approaches the rated rotation
speed.
These heads are raised from the disk surface as the spindle motor approaches the rated rotation
speed.
Figure 4.1
Head structure
4.2.3
Spindle
The spindle consists of a disk stack assembly and spindle motor. The disk stack assembly is
activated by the direct drive sensor-less DC spindle motor, which has a speed of 7,200 rpm. The
spindle is controlled with detecting a PHASE signal generated by counter electromotive voltage of
the spindle motor at starting. After that, the rotational speed is kept with detecting a servo
information.
activated by the direct drive sensor-less DC spindle motor, which has a speed of 7,200 rpm. The
spindle is controlled with detecting a PHASE signal generated by counter electromotive voltage of
the spindle motor at starting. After that, the rotational speed is kept with detecting a servo
information.
S p i n d l e
A c t u a t o r
MPG3307AH-E / MPG3409AH-E
3
2
1
0
MPG3204AH-E
S p i n d l e
A c t u a t o r
0
1