Lenovo ThinkServer RD650 User Manual And Hardware Maintenance Manual page 39

2 System health LED
The system health LED provides basic diagnostic functions for your server. If the system health LED is lit,
one or more LEDs elsewhere in the server might also be lit to direct you to the source of the error. See
"System fan fault LEDs" on page 50.
Status Color
On Amber
Blinking Amber
Off None
3 Power button with power status LED
You can press the power button to turn on the server when you finish setting up the server. You also can
hold the power button for several seconds to turn off the server if you cannot turn off the server from the
operating system. See Chapter 4 "Turning on and turning off the server" on page 53. The power status LED
helps you to determine the current power status.
Status
On
Off
Description
The temperature of the server reached the
non-critical temperature threshold.
The voltage of the server reached the
non-critical voltage threshold.
A fan has been detected to be running at
low speed.
A hot-swap fan has been removed.
The power supply has a critical error.
The power cord has been disconnected
from one power supply or a redundant
power supply has been removed.
The THERMTRIP# signal is asserted
because the system is overheated.
The server is initialized.
The server is off or the server is on and is
working correctly.
Color
Green The server is on.
None The server is off.
Action
Check the BMC for errors and check the
system fans.
Replace the system board.
Note: This procedure must be performed
only by trained service personnel of Lenovo.
See Chapter 8 "Getting information, help,
and service" on page 203.
Check the system fans.
1. Ensure that the system fans are
connected securely to the system
board.
2. Reinstall the removed fan or install a
new fan to replace the removed fan.
Check the BMC for detailed information.
1. Ensure that the power supplies are
installed securely in the server.
2. Ensure that the power cords are
connected securely to the power
supplies.
3. Install a new power supply to replace
the removed one.
Check the BMC for errors and then check
the system fans.
Description
.
Chapter 3 Product overview
25