Rear Panel LEDs
User Guide—Sun Cobalt LX50 Server
3-3
Rear Panel LEDs
The rear panel contains the LEDs shown in Figure 34.
Figure 34.
Rear Panel LEDs
•
Network Connection/Activity LEDs (green). The green LED, when illuminated, indicates a valid network
connection. It also indicates, when blinking, that there is transmit or receive activity.
•
Network Speed LEDs (yellow). The yellow LED indicates 100 Mbps operation when lit and 10 Mbps operation
when off.
•
POST LEDs (multi-color). To help diagnose power-on self test (POST) failures, a set of four bi-color diagnostic
LEDs is located on the back edge of the server Main Board. These LEDs are visible through holes in the rear
panel. Each of the four LEDs can have one of four states: Off, Green, Red, or Amber. For detailed information on
these LEDs, see “POST LED Indicators” on page 6-12.
•
System ID LED (blue). This LED is located on the Main Board and is visible through holes in the rear panel. It
can provide a mechanism for identifying one system out of a group of identical systems. This can be particularly
useful if the server is used in a rack-mount chassis in a high-density, multiple-system application. The LED is
activated by depressing the front panel System ID pushbutton or if the server receives a remote System Identify
command from a remote management console. If activated by the front panel pushbutton, the LED remains on
until the pushbutton is depressed again. When the LED illuminates due to a remote System Identify command,
the LED turns off after a timeout period. An additional blue System ID LED is located on the front panel that
mirrors the operation of the rear Main Board LED.
•
Power Supply LED (green/amber). This is a bi-color LED that can be on, off, green, amber, or blinking, or
combination thereof. See “Rear Panel Power Supply Status LED” on page 6-4 for more detailed information.
OM11668
Power Supply LED
Network Connection/Activity
LEDs (green)
Network Speed
LEDs (yellow)
System ID LED
(blue, on Main Board)
System ID LED
(green/amber, on Main Board)
Four POST LEDs
(green, on Main Board)
Summary of Contents for Cobalt LX50
Page 1: ...Sun Cobalt LX50 Server User Guide...
Page 10: ...Contents x User Guide Sun Cobalt LX50 Server...
Page 14: ...xiv User Guide Sun Cobalt LX50 Server...
Page 22: ...Chapter 1 Introducing the Sun Cobalt LX50 server 1 8 User Guide Sun Cobalt LX50 Server...
Page 58: ...Chapter 3 Controls and Indicators 3 4 User Guide Sun Cobalt LX50 Server...
Page 114: ...Chapter 5 Maintaining the Server 5 30 User Guide Sun Cobalt LX50 Server...
Page 132: ...Chapter 6 Troubleshooting the Server 6 18 User Guide Sun Cobalt LX50 Server...
