4.1 Mounting Requirements
(3)Limitation of
Use all 4 mounting holes on the bottom face.
(4)Environmental temperature
Temperature condition at installed in a cabinet is indicated with ambient temperature measured 3 cm from the disk drive. At designing the system cabinet, consider following points.
•Make a suitable air flow so that the DE surface temperature does not exceed 60°C.
•Cool the PCA side especially with air circulation inside the cabinet. Confirm the cooling effect by measuring temperature of specific ICs and the DE. These measurement results should be within a criteria listed in Table 4.1.
•Keeping the DE surface temperature at 50° C or below at ambient temperature 25° C, which is a condition for assuring an MTBF of 1,200,000 hours, requires an air flow of 0.7 m/s.
Table 4.1 Surface temperature check point
No. | Measurement point | Criteria |
|
|
|
1 | Center of DE cover | 60°C |
|
|
|
2 | Read channel LSI | 88°C |
|
|
|
3 | VCM/SPM Driver | 92°C |
|
|
|
4 | HDC | 90°C |
|
|
|
5 | MPU | 91°C |
|
|
|
3 5
1
4
2
