Sun Microsystems, Inc.   Sun System Handbook - ISO 4.1 October 2012 Internal/Partner Edition
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Sun SPARC Enterprise T5120 / T5220 LEDs

The Sun SPARC Enterprise T5120 / T5220 servers provides the following LED groupings:

Front Panel LEDs Disk Drive LEDs Rear Panel LEDs

Sun SPARC Enterprise T5120 / T5220 Front Panel LEDs



Three of the front panel LEDs are located on the left hand side of the front panel above HDD0. These LEDs provide a quick visual check on the state of the system.

 

LED Name LED color Description
Locator LED and Locator button
White Enables you to identify a particular server. The LED is controlled using one of the following methods:
  • Issuing the ALOM CMT setlocator on or off command
  • Manually press the Locator button to toggle the Locator LED on or off.

    • This LED provides the following indications:
  • Off - Normal operating state.
  • Fast Blink - The server received a signal as a result of one of the preceding methods and is indicating here I am.
    		•
    Service Action Required LED Amber The service required LED will illuminate when any of the following conditions occur:
  • A fault is detected by the system diagnostics, such as POST or ALOM CMT
  • When a FRU fails, such as a power supply
    • Power/OK LED Off Indicates the system is not running in its normal state. System power might be off or in standby mode. The service processor might be running.
    Green - Steady On Normal operating state
    Green - Slow Blink Indicates that a normal transitory activity is taking place. This could indicate the system diagnostics are running, or that the system is booting.
    Green - Fast Blink Indicates the system is running at a minimum level in standby and is ready to be quickly returned to full function. The service processor is running.
    Power on/off Button Turns the system on and off.
    • If the system is powered off, press once to power on.
    • If the system is powered on, press once to initiate a graceful system shutdown.
    • If the system is powered on, press and hold for 4 seconds to initiate an emergency shutdown.
    Fan Module Service LED Amber - Off Indicates a steady state, no service action is required.
    Amber - Steady On Indicates a fan failure event has been acknowledged and a service action is required on at least one of the fan modules.
    Power Supply Service Required LED Amber - Off Indicates a steady state, no service action is required.
    Amber - Steady On Indicates a power supply failure event has been acknowledged and a service action is required on at least one PSU.
    System Overtemperature LED Amber - Off Indicates a steady state, no service action is required.
    Amber - Steady On Indicates a temperature failure event has been acknowledged and a service action is required.

     

     

    Sun SPARC Enterprise T5120 / T5220 Disk Drive LEDs

    LED Name Description
    Ready to Remove (Blue) This LED is lit to indicate that a hard drive can be removed safely during a hot-plug operation.
    Service Required (Amber) This LED is lit when the system is running and the hard drive is faulty.
    OK/Activity (Green) This LED lights when data is being read from or written to the hard drive.

     

     

    Sun SPARC Enterprise T5120 / T5220 Rear Panel LEDs

    LED Name Description
    OK (Green) This LED lights when the power supply voltage from the PSU to the server is within tolerance.
    Fault - Service Required (Amber) This LED is lit when the power supply is faulty. Note - The front and rear panel Service Required LEDs are also lit if the system detects a power supply fault.
    AC Present (Green) This LED turns on when AC voltage is applied to the power supply. Note - For DC models, this is the DC input OK LED. It turns on when the input DC power is present. Note - For DC PSUs, this symbol is either DC or a power connector.
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