Sun Microsystems, Inc.   Sun System Handbook - ISO 3.4 June 2011 Internal/Partner Edition
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Sun Fire E2900 LEDs

Use the LEDs on the individual system components to determine if the system is operating normally. That is, the LEDs should be routinely monitored on:

  • Boards (System Controller and I/O Assembly (IB_SSC), CPU/Memory, L2 Repeaters)
  • Fan trays
  • Power supplies

LEDs can be off or on. When the fault LED is on (lit), this indicates that a fault has occurred in the system. When the fault LED is lit, you should take immediate action to clear the fault.

Note: The green Power LED on a power supply will blink when the system is in Standby mode.

System LEDs

LED Name and Location Color Function
Locator White Normally off; can be lit by user command.
System Fault Amber Lights when the LOM detects a fault.
System Active Green Lights when power is applied to the system (that is, when the system is being powered on, or is powered on). Extinguished when the system is in Standby.
Top Access Amber Lights when a fault occurs in a FRU which can only be replaced from the top of the system.
UNIX Running Green Extinguished when a fault is detected and the system is not running correctly.
Alarm1 and Alarm2 Green Light when triggered by events as specified in the LOM.
Source A and Source B Green Light when the relevant power feeds are present in Standby mode.

Module/Component Level LEDs

Power1

(green)
Fault

(amber)
OK to Remove2

(amber)
 Indication Corrective Action
Off
Off
Off
 Component not operating. You can remove the component from the system.
Off
On
Off
 Component not operating. Fault condition present. You cannot remove the component from the system.
Off
Off
On
 Component not operating. No fault condition present. You can remove the component from the system.
Off
On
On
 Component not operating. Fault condition present. You can remove the component from the system.
On
Off
Off
 Normal component operation. N/A
On
Off
On
 Component not operating. No fault condition present. You can remove the component from the system.
On
On
Off
 Component operating. Fault condition present. You cannot remove the component from the system.
On
On
On
 Component operating. Fault condition present. You can remove the component from the system.
1 - Not applicable to fans.
2 - Not applicable to power supplies or fans.

Note: For power supplies, as long as a minimum of two power supplies are powered (with only the Power LED lit) one of the the other power supplies can be removed.

You can only remove a hot-swappable powered-up component when the amber Removal OK LED is lit. The hot-swappable components include:

  • CPU/Memory boards
  • Power supplies
  • Fans (main and IB)
  • Hard disk drives

Note: The Fan tray, IB_SSC, and L2 Repeaters are not hot-swappable. You must power off the system in order to remove them.

 

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