Server Power Features - IBM System x3620 M3 7376 Installation And User Manual

Table 2. Power-supply LEDs
Power-supply LEDs
AC DC Error
(green) (green) (amber)
On On Off
Off Off Off
Off Off On
Off On Off
Off On On
On Off Off
On Off or On
Flashing
On On On

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 (IMM) is shut down; however, the server can respond to requests from the
IMM, 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
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
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System x3620 M3 Type 7376: Installation and User's Guide
Description Action
Normal operation
No ac power to
1. Check the ac power to the server.
the server or a
2. Make sure that the power cord is
problem with the
ac power source
3. Turn the server off and then turn the
4. If the problem remains, replace the
No ac power to
1. Replace the power supply.
the server or a
2. Make sure that the power cord is
problem with the
ac power source
and the power
supply had
detected an
internal problem
Faulty power Replace the power supply.
supply
Faulty power Replace the power supply.
supply
Power supply not
1. Reseat the power supply.
fully seated,
2. Replace the power supply.
faulty system
3. (Trained service technician only)
board, or faulty
power supply
Faulty power Replace the power supply.
supply
Power supply is Replace the power supply.
faulty but still
operational
automatically when power is restored.
connected to a functioning power
source.
server back on.
power supply.
connected to a functioning power
source.
Replace the system board.
Notes
This is a normal
condition when no
ac power is present.
This happens only
when a second
power supply is
providing power to
the server.
Typically indicates
that a power supply
is not fully seated.