Server Power Features - Lenovo System x3300 M4 Installation And Service Manual

LED Description
RTMM Power-on and
heartbeat power-off
sequencing.
IMM2 IMM2 heartbeat boot
heartbeat process.

Server power features

When the server is connected to an ac power source but is not turned on, the operating system does not
run, and all core logic except for the service processor (the Integrated Management Module II) is shut down.
However, the server can respond to requests to the service processor, such as a remote request to turn on the
server. The power-on LED flashes to indicate that the server is connected to ac power but is not turned on.
Turning on the server
Use this information to turn on the server.
Approximately 5 seconds after the server is connected to ac power, one or more fans might start running
to provide cooling while the server is connected to power and the power-on button LED will blink quickly.
Approximately 1 to 3 minutes after the server is connected to ac power, the power-control button becomes
active (the power-on LED will blink slowly), and one or more fans might start running to provide cooling while
the server is connected to power. You can turn on the server by pressing the power-control button.
The server can also be turned on in any of the following ways:
• If a power failure occurs while the server is turned on, the server will restart automatically when power
is restored.
• If your operating system supports the Wake on LAN feature, the Wake on LAN feature can turn on the
server.
Notes:
1. When 4 GB or more of memory (physical or logical) is installed, some memory is reserved for various
system resources and is unavailable to the operating system. The amount of memory that is reserved
for system resources depends on the operating system, the configuration of the server, and the
configured PCI options.
2. Ethernet 1 connector supports Wake on LAN feature.
3. When you turn on the server with external graphical adapters installed, the Lenovo logo displays on the
screen after approximately 3 minutes. This is normal operation while the system loads.
4. Make sure the left-side cover is closed.
Action
1. If the LED blinks at 1Hz, it is functioning properly and no action is
necessary.
2. If the LED is not blinking, (trained technician only) replace the system
board.
The following steps describe the different stages of the IMM2 heartbeat
sequencing process.
1. When this LED is blinking fast (approximately 4Hz), this indicates, that
the IMM2 code is in the loading process.
2. When this LED goes off momentarily, this indicates that the IMM2 code
has loaded completely.
3. When this LED goes off momentarily and then starts blinking slowing
(approximately 1Hz), this indicates that IMM2 is fully operational. You
can now press the power-control button to power-on the server.
4. If this LED does not blink within 30 seconds of connecting a power
source to the server, (trained technician only) Replace the system board.
Chapter 1
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The Lenovo System x3300 M4 Type 7382 server
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