Figure 4.5 Surface Temperature Measurement Points; Table 4.1 Surface Temperature Check Point And Maximum Temperature - Fujitsu MAU3147RC Product/Maintenance Manual

(4) 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 PCA 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.
•
Keeping the DE surface temperature at 50°C or below at ambient temperature 30°C, which is a
condition for assuring an MTBF of 1,400,000 hours, requires an air flow of 0.5 m/s or more.
Table 4.1
No.
1 DE Surface
2 Read channel LSI
3 VCM/SPM Driver
4 HDC
5 MPU
Figure 4.5
C141-E222
Surface temperature check point and maximum temperature
Measurement point
Surface temperature measurement points
4.3 Connection Requirements
Maximum temperature
60°C
80°C
92°C
91°C
88°C
4-5