Lenovo ThinkServer RD120 Hardware Maintenance Manual page 24

The following controls, LEDs, and connectors are on the operator information panel:
v Power-control button: Press this button to turn the server on and off manually.
v Power-on LED: When this LED is lit and not flashing, it indicates that the server
v Hard disk drive activity LED: When this LED is flashing, it indicates that a hard
v System-locator LED: Use this LED to visually locate the server among other
v Information LED: When this LED is lit, it indicates that a noncritical event has
v System-error LED: When this LED is lit, it indicates that a system error has
v Release latch: Slide this latch to the left to access the Easy LED Diagnostics
USB connectors: Connect a USB device, such as USB mouse, keyboard, or other
USB device, to either of these connectors.
Video connector: Connect a monitor to this connector. The video connectors on
the front and rear of the server can be used simultaneously.
Hard disk drive activity LED: Each hot-swap hard disk drive has an activity LED.
When this LED is flashing, it indicates that the drive is in use.
Hard disk drive status LED: Each hot-swap hard disk drive has a status LED.
When this LED is lit, it indicates that the drive has failed. When this LED is flashing
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ThinkServer RD120 server Machine Types 6444, 6445, 6446, and 6447: Hardware Maintenance Manual
1
Power-on LED
2
Hard disk drive activity LED
3
Information LED
4
Release latch
A power-control-button shield comes installed on the server to prevent the server
from being turned off accidentally.
is turned on. When this LED is flashing, it indicates that the server is turned off
and still connected to a power source. When this LED is off, it indicates that
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 cord from the electrical outlet.
Attention: In a dc power environment, only trained service personnel other than
Lenovo service technicians are authorized to connect or disconnect power to the
dc power supply. See the documentation that comes with each dc power supply.
disk drive is in use.
servers.
occurred. An LED on the Easy LED Diagnostics panel is also lit to help isolate
the error.
occurred. An LED on the Easy LED Diagnostics panel is also lit to help isolate
the error.
panel, which is behind the operator information panel.
5
System-error LED
6
System-locator LED
7
Power-control button