System-Board Leds - Lenovo ThinkEdge SE455 V3 User Manual

LED Description
Input status The input status LED can be in one of the following states:
1
• Off: The power supply is disconnected from the AC power source.
• Green: The power supply is connected to the AC power source.
Output status The output status LED can be in one of the following states:
2
• Off: The server is powered off, or the power supply is not working properly. If the server is
powered on but the output status LED is off, replace the power supply.
• Blinking green (about one flash each second): The power supply is in zero-output mode
(standby). When the server power load is low, one of the installed power supplies enters into
the standby state while the other one delivers entire load. When the power load increases, the
standby power supply will switch to active state to provide sufficient power to the server.
Zero-output mode can be disabled via Lenovo XClarity Controller web interface. If you disable
zero-output mode, both power supplies will be in the active state.
– Log in to the Lenovo XClarity Controller web interface, choose Server Configuration ➙
• Green: The server is on and the power supply is working normally.
Fault LED
3
• Off: The power supply is working normally
• Amber: The power supply may have failed. Dump the FFDC log from the system and contact
Lenovo back end support team for PSU data log reviewing.

System-board LEDs

The following illustrations show the light-emitting diodes (LEDs) on the system board.
Power Policy, disable Zero Output Mode, and then click Apply.
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Chapter 8 Problem determination 275