Lenovo 390 Server User Manual


 
Power status LED
Color
Description
On Green
The server is on.
Off
None
The server is off.
Blinking
Green The server is in ACPI S1 mode, which is also known
as Power On Suspend (POS) mode. In this mode, the
microprocessor is not working while other hardware
devices are still working.
2 Hard disk drive status LED
The hard disk drive status LED helps you to determine the status of the hard disk drive activity.
Hard disk drive status LED
Color
Description
Off
None The hard disk drive is not in use.
Blinking
Green
The hard disk drive is active and data is being
transferred.
3 NIC 1 status LED
4 NIC 2 status LED
The two NIC status LEDs indicate the LAN status for the Ethernet connector 1 and Ethernet connector 2
on the rear panel of the server.
NIC status LED Color
Description
On Green
The server is connected to a LAN.
Off
None
The server is disconnected from a LAN.
Blinking
Green
The LAN is connected and active.
5 System status LED
The system status LED helps you to determine if there are any system errors.
System status LED Color
Description
On
Amber A system error has occurred.
Off
None
The server is off or the server is on and is working
correctly.
6 Front USB connector 1
7 Front USB connector 2
Used to attach a device that requires a USB connector, such as a USB keyboard, a USB mouse, a USB
scanner, or a USB printer. If you have more than six USB devices, you can purchase a USB hub, which
you can use to connect additional USB devices.
DIT module
This topic provides information about the DIT module and the diagnostic LEDs on the panel of the DIT
module.
18 ThinkServer Hardware Maintenance Manual