Maintenance And Troubleshooting; Power Supply Failure; Ac Power Input Failure; Rps Power Input Failure - H3C S5120-SI Installation Manual

Maintenance and troubleshooting

Power supply failure

The S5120-28P-HPWR-SI switch supports AC-only power input, RPS-only power input, and RPS
and AC power inputs. The other switch models support only AC power input.
To determine whether the power supply system of the switch is operating correctly, observe the
power status LED (Power) or RPS status LED (RPS) on the switch.

AC power input failure

Symptom
The power status LED is off.
Solution
To resolve the problem:
Verify that the AC power cord is connected correctly and no faults occur on the AC-input
1.
receptacle on the switch and the source AC power outlet.
Verify that the AC power supply system is operating correctly.
2.
Verify that the ambient temperature is in the acceptable range and good ventilation is provided
3.
for the power supply system of the switch.
PoE switches support over-temperature protection, allowing the internal power module to enter
the protection state if the temperature is too high and then restore power supply after the
temperature returns to the acceptable range.
If the problem persists, contact H3C Support.
4.

RPS power input failure

Symptom
The power status LED and RPS status LED are off.
Solution
To resolve the problem:
Verify that the RPS DC power cord is connected correctly.
1.
Verify that the RPS is operating correctly.
2.
Verify that the ambient temperature is in the acceptable range and good ventilation is provided
3.
for the power supply system of the switch.
PoE switches support over-temperature protection, allowing the internal power module to enter
the protection state if the temperature is too high and then restore power supply after the
temperature returns to the acceptable range.
If the problem persists, contac H3C Support.
4.

AC and RPS power input failure

Symptom
•
The power status LED is off.
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