4
Holes for mounting screw
3
2 In case of using a center hole, use it in combination with the holes of both ends.
1
Holes for mounting screw
Use four holes (No.1 to No.4) to mount.
Figure 4.5 Limitation of side-mounting
(4)Limitation of
Use all four mounting holes on the bottom face.
(5)Environmental temperature
Temperature condition at installed in a cabinet is indicated with ambient temperature measured 30 mm from the disk drive. At designing the system cabinet, consider following points.
•Make a suitable air flow so that the DE surface temperature never exceed 60°C.
•Cool the PCBA side especially with air circulation inside the cabinet. Confirm the cooling effect by measuring the surface temperature of specific ICs and the DE. These measurement results must satisfy the temperature condition listed in Table 4.1.
•Keep the DE surface temperature at 50 °C or below to meet the condition for assuring an MTBF of 1,400,000 hours. An air flow of 0.9 m/s or more is required at ambient temperature 30 °C.
Table 4.1 Surface temperature check point
No. | Measurement point |
1DE surface
2Read channel LSI
3VCM/SPM Driver
4HDC
5MPU
Max. temperature on
package
60°C
82°C
100 °C
100 °C
94°C
52 |
|
