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22 Elite 23 Product Manual, Rev. A

Table 3: PCB and HDA temperatures

Note.

[1] The air-flow pattern with which the temperature guidelines in Column 2 were generated is shown in

Figure 11. Local average air velocities were 200 lfpm and inlet air temperature to the drive was 86°F

(30°C), plus a 9°F (5°C) temperature rise in the test enclosure (86°F/30°C ambient local to the drive).

[2] The temperatures in Column 1 are calculated and may not reflect actual operating values. Sufficient

cooling air may be required to ensure that these values are not exceeded.

[3] Measure HDA temperature at point labeled “HDA Temp. Checkpoint” on Figure 4.

[4] PCB mounted integrated circuit case.

Figure 4. Location of PCB components listed in Table 3

Component

Figure 4

reference

Column 1

Maximum case [4]

temperature (°C)

operating (50°C ambient) [2]

Column 2

Typical case [4]

temperature (°C)

at 35°C ambient [1]

ADC 1 131°F (55°C) 104°F (40°C)

SCSI Controller 2 149°F (65°C) 122°F (50°C)

Barnum 3 151°F (66°C) 124°F (51°C)

Motor Controller 4 144°F (62°C) 117°F (47°C)

HDA housing [3] 140°F (60°C) 45°C

ST423451N Drives

RYJX

ST423451WD Drives

UYJX

ST423451W Drives

TYJX

HDA Temp.

Check Point

.50"

.75"

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 83 84

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Seagate Elite 9 Handbuch Seite 32