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4-7

Environmental Monitoring

Power Supply Carrier LEDs

The power supply carrier has two LED indicators (see Figure 4-4). These LED

indicators are driven by the VEM.

Figure 4-4. LEDs On Power Supply Carrier

These power supply status LEDs function as follows:

• The green LED on the top is the power supply status indicator.

• The red LED on the bottom is the power supply failure LED. It is normally

off. If a failure has occurred, this LED turns on steadily or flashes at regular

intervals. See Table 4-2 for the meaning of the LED interval patterns.

Table 4-2 Power supply LED definitions

LED color/location

LED

activity

Meaning

Green - top On

Off

Power supply is functioning prop-

erly.

An input power problem exists or

the power supply is not functioning

properly.

Red - bottom Off

Power supply is functioning prop-

erly

Power supply malfunction or input

power problem exists.

Power Supply Failure LED (RED)

Power Supply Status LED (GREEN)

110/220V

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