Maintenance And Troubleshooting; Power Supply Failure - HP FlexNetwork 5120 SI Series Installation Manual
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Also See for FlexNetwork 5120 SI Series:
- Command reference manual (395 pages) ,
- Security configuration manual (385 pages) ,
- Specification (33 pages)
Table of Contents
Maintenance and troubleshooting
Power supply failure
The 5120 SI switches use built-in power supplies. The 5120 24G PoE+ (370W) SI switch support
three power input modes: AC input, RPS DC input, and concurrent AC and RPS DC inputs. All other
5120 SI switches support only AC power input.
To identify a power failure:
On the 5120 24G PoE+ (370W) SI switch, look at the power LED and the RPS status LED of the
switch. For more information, see "LEDs."
On any other 5120 SI switch, look at the power LED of the switch. For more information, see
"LEDs."
AC input
If the power LED is off, an AC input failure has occurred. Verify the following items:
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.
The external AC power system is correctly working.
The operating temperature of the switch is in the normal range, and the power module has good
ventilation. Over-temperature can cause the power module to stop working and enter the
protection state.
RPS DC input
If the power LED or RPS status LED is off, an RPS input failure has occurred. Verify the following
items:
The switch is securely connected to the RPS.
The RPS is correctly working.
The operating temperature of the switch is in the normal range, and the power supply has good
ventilation. Over-temperature can cause the power supply to stop working and enter the
protection state).
Concurrent RPS and AC inputs
1.
If the power LED is off, the AC power supply and the RPS both have an input failure.
Verify the following items:
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.
The external AC power system is correctly working.
The switch is securely connected to the RPS.
The RPS is correctly working.
The operating temperature of the switch is in the normal range, and the power supply has
good ventilation. Over-temperature can cause the power supply to stop working and enter
the protection state.
2.
If the power LED is on but the RPS status LED is steady yellow, an AC input failure has
occurred.
Verify the following items:
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.
The external AC power system is correctly working.
24
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