Internal Leds, Connectors, And Jumpers - Lenovo System x3550 M3 Problem Determination And Service Manual

Turning off the server
Use this information to turn off the server.
When you turn off the server and leave it connected to power, the server can respond to requests from the
service processor, such as a remote request to turn on the server. While the server remains connected to
power, one or more fans might continue to run. To remove all power from the server, you must disconnect it
from the 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 turn 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 server can be turned off by Wake on LAN feature with the following limitation:
– To install any PCI adapter, the power cords must be removed from the power source before you
remove the PCI Express riser assembly and the PCI-X riser assembly. Otherwise, this will cause the
active power management event signal to become disabled by the system board logic and Wake on
LAN might not work. However, after the server is powered-on locally, the active power management
event signal will be enabled by the system board logic.
• The integrated management module (IMM) can turn off the server as an automatic response to a critical
system failure.

Internal LEDs, connectors, and jumpers

Use this information to view the internal LEDs, connectors, and jumpers.
The illustrations in this section show the connectors, LEDs, and jumpers on the internal boards.
System x3550 M3Problem Determination and Service Guide
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