3-2
Cisco UCS C22 Server Installation and Service Guide
OL-26646-01
Chapter 3      Maintaining the Server
Status LEDs and Buttons
Status LEDs and Buttons
This section describes the location and meaning of LEDs and buttons and includes the following topics:
  • Front Panel LEDs, page 3-2
  • Rear Panel LEDs and Buttons, page 3-4
Front Panel LEDs
Figure 3-1 shows the front panel LEDs. Table 3-1 defines the LED states.
Figure 3-1 Front Panel LEDs 
 
1 Power button/Power status LED 6 Power supply status LED
2 Identification button/LED 7 Network link activity LED
3 System status LED 8 Hard drive fault LED
4 Fan status LED 9 Hard drive activity LED
5 Temperature status LED –
Ta b l e  3-1 Front Panel LEDs, Definitions of States 
LED Name State
Power button/Power status LED   • Off—There is no AC power to the server.
  • Amber—The server is in standby power mode. Power is supplied only to the CIMC 
and some motherboard functions.
  • Green—The server is in main power mode. Power is supplied to all server 
components. 
Identification   • Off—The Identification LED is not in use.
  • Blue—The Identification LED is activated.
HDD06
HDD01
HDD07
HDD02
HDD08
HDD03
HDD04
HDD04 HDD05
HDD05
1 2 3 4 5 6 7 8 9
333247