Lenovo ThinkServer TD200x Hardware Maintenance Manual page 151

Important: To view the error LEDs on the system board, leave the server connected to a power source.
Some operating systems require an orderly shutdown before you turn off the server. See your
operating-system documentation for information about shutting down the operating system.
Statement 5
CAUTION:
The power control button on the device and the power switch on the power supply do not turn off
the electrical current supplied to the device. The device also might have more than one power
cord. To remove all electrical current from the device, ensure that all power cords are disconnected
from the power source.
The server can be turned off in any of the following ways:
• You can turn off the server from the operating system, if your operating system supports this feature. After
an orderly shutdown of the operating system, the server will be turned off automatically.
• You can press the power-control button to start an orderly shutdown of the operating system and turn off
the server, if your operating system supports this feature.
• If the operating system stops functioning, you can press and hold the power-control button for more
than 4 seconds to turn off the server.
• The integrated management module (IMM) can turn off the server as an automatic response to a critical
system failure.
• You can turn off the server through a request from the IMM.
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Chapter 6 Locating Server Controls and connectors
143