The following minimum configuration is required for the server to start:
• One microprocessor in microprocessor socket 1
• One 4 GB DIMM in a DIMM connector that is associated with microprocessor socket 1 on the system
board
• One power supply
• Power cord
• Six cooling fans
The following illustration shows the locations of the power-supply LEDs.
000000
000000
000000
00
00
00
0
0
0
0
0
0
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
Power-on
LED (green)
Locator
LED (blue)
System error
LED (yellow)
AC
DC
!
AC LED (green)
DC LED (green)
Power supply
error LED
(yellow)
The following table describes the problems that are indicated by various combinations of the power-supply
LEDs and the power-on LED on the operator information panel and suggested actions to correct the
detected problems.
Table 23. Power-supply LEDs
Power-supply LEDs
AC
DC
Error
Description
Action
Notes
On
On
Off
Normal operation
The server is
functioning
correctly.
Off
Off
Off
No ac power to the
server or a problem with
the ac power source.
1. Check the ac power to the
server.
2. Make sure that the power
cord is connected to a
functioning power source.
3. Restart the server. If the
error remains, check the
power-supply LEDs.
4. Replace the power supply.
This is a normal
condition when no
ac power is present.
Off
Off
On
No input power to
the power supply or
the power supply has
detected an internal
problem.
• Make sure that the power
cord is connected to a
functioning power source.
• Replace the power supply.
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
The system is off: The
system is connected to
ac power.
The server is
functioning
correctly.
171
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