Hitachi HUS103073FL3800 specifications Temperature Limits unit C, Temperature Measurement Points

7.4 Precautions on the off-line test or bench test

When the off-line test or bench test is performed the drive should be tightly fixed and cooled. The set-up should be similar to the actual system configuration.

7.5 Cooling of the drive

Keep the drive (HDA and PCB) cool by using a FAN. Reliability and life of the drive increases as the temperature is lower.

Caution

7.6 Reliability temperature

The temperature measurement points and temperature limits are shown below.

1.The maximum temperature assures the data reliability, seek error rate, and must not be exceeded.

2.The reliability temperature maintains the MTBF of the drive and must not be exceeded in order to ensure its reliability. MTBF is also based on a nominal voltage condition.

3.The maximum temperature of HDA includes momentary temperature rise. Average temperature of HDA has to be less than this temperature.

Table 7.1 Temperature Limits (unit: °C)

Measurement points			HDA(top)	HDA(bottom)	IC(RW)	IC(MPU)
Maximum temperature		65		65	85	85
Reliability temperature		50		50	70	70
	HDA(top)				IC(RW)		HDA(bottom)

IC(MPU)

Figure 7.4 Temperature Measurement Points

Drawing No. Sheet No. Revision ６
K6610091	26/43	2005/2/23