Table 4.1 Surface Temperature Check Point - Fujitsu MAN3367FC - Enterprise 36.7 GB Hard Drive Product/Maintenance Manual

(3) Limitation of bottom-mounting
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 55°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 40 C or lower, which is a condition for assuring an
MTBF of 1,200,000 hours, requires an air flow of 1.0 m/s.
No.
1
2
3
4
5
1
Figure 4.5
C141-E133-02EN
Table 4.1 Surface temperature check point
Measurement point
Center of DE cover
Read channel LSI
VCM/SPM Driver
HDC
MPU
4
Surface temperature measurement points
4.1 Mounting Requirements
Criteria
55°C
90°C
92°C
95°C
88°C
5
3
2
4-5