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Status LEDs
The EMU controls the three enclosure status LEDs (see Figure 4-3) that
display the status of the EMU and the enclosure, the enclosure power, and an
enclosure fault.
Figure 4-3. Front status LEDs
The EMU also monitors the power supply and blower LEDs, located on the
rear of the enclosure. The operation of these LEDs is described in the chapters
about each element.
Temperature
The EMU monitors the internal temperature using sensors.
I
When the tape array internal temperature is 45°C (113°F) or more, the
EMU turns On the amber tape array Fault LED.
I
A power supply automatically shuts down when the internal power
supply temperature exceeds 85°C (180°F).
I
When Compaq Insight Manager is installed, it can report an alarm
condition when the internal temperature reaches 50°C (122°F).
Environmental Monitoring Unit 4-3
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