6-3
RPS&AC input/RPS&-48V DC input
When the switch adopts both RPS and AC inputs or both RPS and -48V DC inputs, you can check the
power supply status and the input status of each line by viewing the system status LED and RPS status
LED.
1) The system status LED is off.
Both the AC/-48V DC input and RPS input are faulty. Then do the following:
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Check whether the AC/-48V DC power cord is well connected to the switch, whether the AC/-48V
DC receptacle on the switch and the AC/-48V DC power socket are faulty.
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Check whether the AC/-48V DC external power supply system is normal.
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Check whether the switch is well connected to the external RPS power supply.
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Check whether the external RPS power supply works normally.
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Check whether the operating temperature of the switch is normal, and whether good ventilation is
provided to the power supply (the power module may stop working and enter the protection state
due to over-temperature).
2) The system status LED is on but the RPS status LED is steady yellow.
An AC/-48V DC input failure occurs. Then do the following:
z
Check whether the AC/-48V DC power cord is well connected to the switch, whether the AC/-48V
DC receptacle on the switch and the AC/-48V DC power socket are faulty.
z
Check whether the AC/-48V DC external power supply system is normal.
3) The system status LED is on but the RPS status LED is off.
An RPS input failure occurs. Then do the following:
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Check whether the switch is well connected to the external RPS power supply.
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Check whether the external RPS power supply works normally.
If the cause cannot be located in the preceding steps and the problem persists, you need to contact
your local sales agent or service engineer.
Hot Swappable Power Module Failure
The S5500-28F-EI support hot swappable power modules. You can check whether the power system of
the switch runs normally by viewing the PWR1 or PWR2 LED on the front panel and of the switch the
LED on the power module.
When the power supply system functions normally, the corresponding power module LEDs should be
steady green. Otherwise, check whether
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The switch power cord is properly connected.
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The power supply meets the requirement.
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The operating temperature of the switch is normal and proper ventilation is ensured for the power
module.