LED Description
1 XCC system management port
(1GB RJ-45) Ethernet port link
LED
Use this green LED to distinguish the network connectivity status:
• Off: The network link is disconnected.
• Green: The network link is established.
2 XCC system management port
(1 GB RJ-45) Ethernet port
activity LED
Use this green LED to distinguish the network activity status:
• Off: The server is disconnected from a LAN.
• Green: The network is connected and active.
Power supply LEDs
This topic provides information about various power supply LED status and corresponding action
suggestions.
The following minimal configuration is required for the server to start:
The following table describes the problems that are indicated by various combinations of the power-supply
LEDs and the power-on LED and suggested actions to correct the detected problems.
Figure 15. Power supply LEDs
LED Description
1 Input status
The input status LED can be in one of the following states:
• Green: The power supply is connected to the input power source.
• Off: The power supply is disconnected from the input power source.
2 Output status
The output status LED can be in one of the following states:
• 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.
• Slow blinking green (about one flash every two seconds): The power supply is in cold
redundancy active mode.
• Fast blinking green (about 2 flashes each second): The power supply is in cold redundancy
sleep mode.
• Green: The server is on and the power supply is working normally.
3 Fault LED
• Off: The power supply is working normally
• Yellow: The power supply has failed. To resolve the issue, replace the power supply.
System-board-assembly LEDs
The following illustrations show the light-emitting diodes (LEDs) on the system board (system board
assembly).
38 ThinkSystem SR645 V3 System Configuration Guide
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