IBM System x3650 M4 BD Type 5466, Installation And Service Manual

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Table 2. Power-supply LEDs status and required action (continued)
Power-supply LEDs
Description Action Notes
AC
(green) DC (green)
Error
(yellow)
Off Off On No ac power to the
server or a problem
with the ac power
source and the
power supply had
detected an
internal problem
1. Replace the power supply.
2. Make sure that the power
cord is connected to a
functioning power source.
This happens only
when a second power
supply is providing
power to the server.
Off On Off Faulty
power-supply Replace the power supply.
Off On On Faulty
power-supply Replace the power supply.
On Off Off Power supply not
fully seated, faulty
system board,
faulty power
supply, or system
not power-on
1. Reseat the power supply.
2. Replace the power supply.
3. (Trained service technician
only) Replace the system
board.
Typically indicates
that a power supply
is not fully seated.
On Off or
Flashing
On Faulty power
supply Replace the power supply.
On On On Power supply is
faulty but still
operational Replace the power supply.
Server power features
When the server is connected to a power source but is not turned on, the operating
system does not run, and all core logic except for the integrated management
module II (IMM2) is shut down.
However, the server can respond to requests from the IMM2, such as a remote
request to turn on the server. The power-on LED flashes to indicate that the server
is connected to power but is not turned on.
Turning on the server
Use this information to turn on the server.
Approximately 40 seconds after the server is connected to power, the
power-control button becomes active, and one or more fans might start running to
provide cooling while the server is connected to power. You can turn on the server
and start the operating system by pressing the power-control button.
The server can also be turned on in any of the following ways:
v
If a power failure occurs while the server is turned on, the server will restart
automatically when power is restored.
v
If your operating system supports the Wake on LAN feature, the Wake on LAN
feature can turn on the server.
For 32-bit operating systems only: 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
Chapter 1. The IBM System x3650 M4 BD Type 5466 server
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