Power-cord
connector
USB 1-2 connector
USB 3-4 connector
Serial
connector
Video
connector
Ethernet 1
activity LED
Ethernet 1
link LED
Ethernet 2
activity LED
Ethernet 2
link LED
PCI slot 1
PCI slot 2
AC Power LED
(green)
DC Power LED
(green)
Power-supply
error LED
(amber)
NMI button
Figure 27. LEDs and connectors on the rear of the fixed power-supply model
The following illustration shows the LEDs and connectors on the rear of the redundant power-supply model.
AC
DC
AC
DC
Power-cord
connector
USB 1-2 connector
USB 3-4 connector
Serial
connector
Video
connector
Ethernet 1
activity LED
Ethernet 1
link LED
Ethernet 2
activity LED
Ethernet 2
link LED
PCI slot 1
PCI slot 2
AC Power LED
(green)
DC Power LED
(green)
Power-supply
error LED
(amber)
NMI button
Figure 28. LEDs and connectors on the rear of the redundant power-supply model
The following table describes the problems that are indicated by various combinations of the power-supply
LEDs and suggested actions to correct the detected problems.
Table 13. Power-supply LEDs
AC Power-supply LEDs
AC
DC
Error
Description
Action
Notes
On
On
Off
Normal
operation
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. If the problem remains, replace the
power-supply.
This is a normal
condition when no
ac power is present.
94
Lenovo System x3250 M4 Installation and Service Guide
Summary of Contents for System x3250 M4
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