HP LH4r HP Netserver LXr 8500 Installation Guide - Page 19

Power Supply Module Indicators

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Chapter 2 Controls, Indicators, and Ports Power Supply Module Indicators Each of the HP NetServer power supply modules has the indicators shown in Figure 2-6 and Table 2-3 provides the descriptions. PWR PRFL FAIL Figure 2-6. Power Supply LEDs Table 2-3. Power Supply Module LED Descriptions Control Description PWR (Power) Glows steady green when HP NetServer is powered up. If the server is not powered up but is connected to AC power (so that standby voltage is available), the LED blinks green. If there is no AC power, the LED is dark. PRFL Blinks yellow if the speed of the power supply's internal fan (Predictive Fail) falls below acceptable levels. Power supply has not failed, but may do so soon. FAIL (Power Supply Failure) Glows steady yellow when power supply fails. Blinks yellow when power supply is drawing more current than it should, because of a short circuit in the power supply or elsewhere in the HP NetServer. If the short-circuit is in the power supply, the power supply shuts down. If the short-circuit is in the HP NetServer, the HP NetServer shuts down. NOTE Once lit, the PRFL (Predictive Fail) LED will continue to blink yellow even if the fan speed problem was intermittent and the fan's speed has regained acceptable levels. 11

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Chapter 2
Controls, Indicators, and Ports
11
Power Supply Module Indicators
Each of the HP NetServer power supply modules has the indicators shown in
Figure 2-6 and Table 2-3 provides the descriptions.
PWR
PRFL
FAIL
Figure 2-6. Power Supply LEDs
Table 2-3. Power Supply Module LED Descriptions
Control
Description
PWR
(Power)
Glows steady green when HP NetServer is powered up.
If the
server is not powered up but is connected to AC power (so
that standby voltage is available), the LED blinks green.
If
there is no AC power, the LED is dark.
PRFL
(Predictive Fail)
Blinks yellow if the speed of the power supply’s internal fan
falls below acceptable levels.
Power supply has not failed,
but may do so soon.
FAIL
(Power Supply
Failure)
Glows steady yellow when power supply fails.
Blinks yellow
when power supply is drawing more current than it should,
because of a short circuit in the power supply or elsewhere in
the HP NetServer.
If the short-circuit is in the power supply,
the power supply shuts down.
If the short-circuit is in the HP
NetServer, the HP NetServer shuts down.
NOTE
Once lit, the PRFL (Predictive Fail) LED will continue to blink
yellow even if the fan speed problem was intermittent and the
fan’s speed has regained acceptable levels.