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C141-E035-03EN4 - 8
(3) 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.
CAUTION
An air flow with an adequate wind velocity must be maintained to
deal with much heat generated from the MAC30xxxx.
Reference value: An air flow with a wind velocity of more than
0.5 m/s is required in an environment at 40°C,
and an air flow with a wind velocity of more
than 1.0m/s in an environment at 45°C (Center
of DE cover 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.
Table 4.1 Surface temperature check point
No. Measurement point Criteria
1 Center of DE cover 55°C
2 Read channel LSI 83°C
3 VCM/SPM Driver 75°C
4 HDC 85°C
Figure 4.8 Surface temperature measurement points (MAA31xxxx/MAB30xxxx/ MAC30xxxx)
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