Internal Diagnostic Leds - Cisco UCS C220 M5 Maintaining

Maintaining the Server
6 Power supply status (one LED each power supply unit)

Internal Diagnostic LEDs

The server has internal fault LEDs for CPUs, DIMMs, and fan modules.
AC power supplies:
• Off—No AC input (12 V main power off, 12 V
standby power off).
• Green, blinking—12 V main power off; 12 V standby
power on.
• Green, solid—12 V main power on; 12 V standby
power on.
• Amber, blinking—Warning threshold detected but 12
V main power on.
• Amber, solid—Critical error detected; 12 V main
power off (for example, over-current, over-voltage,
or over-temperature failure).
DC power supplies:
• Off—No DC input (12 V main power off, 12 V
standby power off).
• Green, blinking—12 V main power off; 12 V standby
power on.
• Green, solid—12 V main power on; 12 V standby
power on.
• Amber, blinking—Warning threshold detected but 12
V main power on.
• Amber, solid—Critical error detected; 12 V main
power off (for example, over-current, over-voltage,
or over-temperature failure).
Maintaining the Server
Internal Diagnostic LEDs
5