Front Panel Indicators

Front Panel Indicators:

The following illustrations identify the indicators located on the front panel of the server.

Tower model

1.  Power-On Light: This green LED blinks when the server is in Standby mode
    (power is present but the server is not turned on). The blinking changes to a solid (continuous)  light when you turn on the server remotely (Unattended mode) or by pressing the Power-On Switch.  If this light is not on, the power cord is not connected or the power supply has failed.

2.  POST Complete Light: This green LED lights when the server completes the power-on self-test
    (POST) without any errors.

3.  SCSI Hard Disk Drive In-Use Light: This green LED lights when the server is accessing
    a SCSI device. If this light remains illuminated, it might indicate that either the SCSI bus or the  system microprocessor has stopped.

4.  Primary Microprocessor Activity Light: This green LED blinks to indicate the activity of a
    microprocessor installed in the primary microprocessor socket. The LED comes on during POST to indicate  the presence of the microprocessor.

5.  Secondary Microprocessor Activity Light: This green LED blinks to show the activity of a
    microprocessor installed in the secondary microprocessor socket. The LED lights during POST to  indicate the presence of the microprocessor. When you install a secondary microprocessor, it becomes  the startup microprocessor.

6.  System Error Light: This amber LED shows that a system error occurred. System errors can
    include high temperature, excess current, or failure or errors in the microprocessor, system fan,  memory, PCI bus, SCSI bus, USB, hard disk drive, diskette drive, serial port, keyboard interface,  or power supply. When this LED is on, one or more LEDs on the system board also might be on,  indicating where the error occurred (see 'System Board LEDs').

7.  Reserved: This LED is reserved for future use.
   

8.  Hard Disk Drive Status Light (Amber): In a RAID environment, this amber LED lights
    continuously when the drive is faulty and needs to be replaced. You can replace these hot-swappable  drives without turning off the server. If you do not have a RAID environment, this LED is not operational.

9.  Hard Disk Drive Activity Light (Green): This green LED lights when the hard disk
    drive is being accessed.

10.  Ethernet Transmit/Receive Activity Light: This green LED shows transmission and reception
     activity on the network.

11.  Ethernet Link Status Light: This green LED shows an active link connection on
     the 10BASE-T or 100BASE-TX interface.

12.  Ethernet Speed Light: This green LED lights when the Ethernet LAN speed is 100 Mbps.
    

The following illustrations identify the indicators located on the back of the server.

Tower model

1.  Power Supply Lights: These green LEDs indicate a power good status for  each of the 175-watt modules in the power supply. If any power supply light is not illuminated  when the Power-On Light on the front of the server is on, there is a problem with that power supply.
    The power supply shipped with the server has two lights, one for each module in the power supply.
    The optional additional power supply has one power module and one green LED.  See 'Power Supplies' for more information about the power supplies.

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