Fujitsu MBA3147RC Product Manual - Page 50
VCM/SPM Driver, Read channel LSI
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UPC - 102646074718
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Installation Requirements (5) Environmental temperature Temperature condition at installed in a cabinet is indicated with ambient temperature measured 30 mm from the HDD. 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 PCBA 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. • Keep the DE surface temperature at 50°C or below to meet the condition for assuring an MTBF of 1,400,000 hours. An air flow of 0.5 m/s or more is required at ambient temperature 30°C. Table 4.1 Surface temperature check point and maximum temperature No. Measurement point 1 DE Surface 2 Read channel LSI 3 VCM/SPM Driver 4 HDC 5 MPU Maximum temperature 60°C 82°C 100°C 97°C 94°C Figure 4.5 Surface temperature measurement points 46 C141-E252
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