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Maintenance and troubleshooting
Power supply failure
The HPE 1950 24G 2SFP+ 2XGT and HPE 1950 48G 2SFP+ 2XGT switches use built-in power
supplies and support only AC power input.
The HPE 1950 12XGT 4SFP+, HPE 1950 24G 2SFP+ 2XGT PoE+(370W), and HPE 1950 48G
2SFP+ 2XGT PoE+(370W) switches use built-in power supplies and support AC power input, RPS
power input, and concurrent AC and RPS DC inputs. For these switch models, the "Power x failed"
message is displayed as long as only one power supply is operating because the switch cannot
identify whether the other power supply is not connected or has failed. In this case, see this section
to determine the power supply state.
To identify a built-in power supply failure, examine the system status LED and the RPS status LED of
the switch.
Table 10 Built-in power supply LED description
LED Mark Status Description
System
status
LED
SYS Off The switch is powered off.
RPS
status
LED
RPS
Steady green
The AC input is normal, and the RPS is in position or operating
correctly.
Steady yellow
RPS power input is normal, but AC input has failed or AC input is
not connected.
Off No RPS is connected.
AC input failure
Symptom
The system status LED is off.
Solution
To resolve the problem:
1. Verify that the AC power cord is securely connected to the switch, and the AC-input power
receptacle on the switch and the connected AC power outlet are in good condition.
2. Verify that the AC power source is operating correctly.
3. Verify that the operating temperature of the switch is in the acceptable range, and the power
supply has good ventilation. Over-temperature can cause the power supply to stop working and
enter the protection state.
4. If the problem persists, contact Hewlett Packard Enterprise Support.
RPS DC input failure
Symptom
The system status LED or RPS status LED is off.
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