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Cisco UCS C240 M4 Server Installation and Service Guide
OL-32474-01
Chapter 3 Maintaining the Server
Status LEDs and Buttons
Rear Panel LEDs and Buttons
Figure 3-2 shows the rear panel LEDs and buttons. Table 3-2 defines the LED states.
Figure 3-2 Rear Panel LEDs and Buttons
1 Power supply fault LED 5 1-Gb Ethernet dedicated management link
status LED
2 Power supply AC status LED 6 1-Gb Ethernet link speed LED
3 Optional mLOM card LEDs
(not shown, see Table 3-2)
7 1-Gb Ethernet link status LED
4 1-Gb Ethernet dedicated management link
speed LED
8 Unit Identification button/LED
Table 3-2 Rear Panel LEDs, Definitions of States
LED Name State
1 Power supply fault
This is a summary; for advanced
power supply LED information,
see Table 3-3.
• Off—The power supply is operating normally.
• Amber, blinking—An event warning threshold has been reached, but the power
supply continues to operate.
• Amber, solid—A critical fault threshold has been reached, causing the power
supply to shut down (for example, a fan failure or an over-temperature
condition).
2 Power supply status
This is a summary; for advanced
power supply LED information,
see Table 3-3.
AC power supplies:
• Off—There is no AC power to the power supply.
• Green, blinking—AC power OK; DC output not enabled.
• Green, solid—AC power OK; DC outputs OK.
DC power supplies:
• Off—There is no DC power to the power supply.
• Green, blinking—DC power OK; DC output not enabled.
• Green, solid—DC power OK; DC outputs OK.
352951
PCIe 01
PCIe 03
PCIe 02
mLOM
PCIe 04
PCIe 06
PCIe 05
PSU 01
PSU 02
4
7
3 6 85
1
2
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General
Weight and Dimensions
