Fujitsu MAP3735FC, MAP3147FC manual Mounting Requirements, 1 Surface temperature check point

4.1 Mounting Requirements

(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 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 lower, 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

1

4

52

Figure 4.5 Surface temperature measurement points

C141-E163 4-5