v System-error LED: When this LED is lit, it indicates that a system error has
occurred. An LED on the light path diagnostics panel is also lit to help isolate the
error.
v Locator LED: When this LED is lit, it has been lit remotely by the system
administrator to aid in visually locating the server.
v Hard disk drive activity LED: When this LED is flashing, it indicates that a SAS
hard disk drive is in use.
v Power-on LED: When this LED is lit and not flashing, it indicates that the server
is turned on. When this LED is flashing, it indicates that the server is turned off
and still connected to an ac power source. When this LED is off, it indicates that
ac power is not present, or the power supply or the LED itself has failed.
Note: If this LED is off, it does not mean that there is no electrical power in the
server. The LED might be burned out. To remove all electrical power from the
server, you must disconnect the power cords from the electrical outlets.
DVD-eject button: Press this button to release a CD or DVD from the DVD drive.
DVD drive activity LED: When this LED is lit, it indicates that the DVD is in use.
Electrostatic-discharge connector: Connect an electrostatic-discharge wrist strap
to this connector.
Rear view
The following illustration shows the connectors and LEDs on the rear of the server.
Power-supply connector: Connect the power cord to this connector.
Video connector: Connect a monitor to this connector.
USB 1 connector: Connect a USB device to this connector.
26 IBM System x3850 Type 8864: Installation Guide
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