Fujitsu MBA3147NC 用户手册
Use four holes (No.1 to No.4) to mount.
Holes for
mounting screw
mounting screw
1
2
3
4
In case of using a
center hole, use it in
combination with the
holes of both ends.
center hole, use it in
combination with the
holes of both ends.
Holes for mounting screw
Figure 4.5 Limitation of side-mounting
(4)
Limitation of bottom-mounting
Use all four mounting holes on the bottom face.
(5) 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.
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 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.
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 0.9 m/s or more is required at ambient temperature
30 °C.
30 °C.
Table 4.1
Surface temperature check point
No. Measurement
point
Max. temperature on
package
1
DE surface
60 °C
2
Read channel LSI
82 °C
3
VCM/SPM Driver
100 °C
4 HDC
100
°C
5 MPU
94
°C
52
C141-E270