Fujitsu MHV2040AT 用户手册

Device Configuration 

 

2-2 

C141-E218 

Figure 2.1 shows the disk drive.  The disk drive consists of a disk enclosure (DE),  
read/write preamplifier, and controller PCA.  The disk enclosure contains the disk 
media, heads, spindle motors, actuators, and a circulating air filter. 

 

(1) Disk 

The outer diameter of the disk is 65 mm.  The inner diameter is 20 mm.   

(2) Head 

The heads are of the load/unload (L/UL) type.  The head unloads the disk out of 
while the disk is not rotating and loads on the disk when the disk starts. 

(3) Spindle motor 

The disks are rotated by a direct drive Sensor-less DC motor. 

(4) Actuator 

The actuator uses a revolving voice coil motor (VCM) structure which consumes 
low power and generates very little heat.  The head assembly at the edge of the 
actuator arm is controlled and positioned by feedback of the servo information 
read by the read/write head.  If the power is not on or if the spindle motor is 
stopped, the head assembly stays on the ramp out of the disk and is fixed by a 
mechanical lock. 

(5)  Air circulation system 

The disk enclosure (DE) is sealed to prevent dust and dirt from entering.  The disk 
enclosure features a closed loop air circulation system that relies on the blower 
effect of the rotating disk.  This system continuously circulates the air through the 
circulation filter to maintain the cleanliness of the air within the disk enclosure.