Lenovo ThinkServer RD650 - Manual (Page 38)

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 49.
Status Color Description Action
The temperature of the server reached the
non-critical temperature threshold. Check the BMC for errors and check the
system fans.
The voltage of the server reached the
non-critical voltage threshold. 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 193.
A fan has been detected to be running at
low speed. Check the system fans.
A hot-swap fan has been removed. 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.
The power supply has a critical error. Check the BMC for detailed information.
The power cord has been disconnected
from one power supply or a redundant
power supply has been removed. 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.
On Amber
The THERMTRIP# signal is asserted
because the system is overheated. Check the BMC for errors and then check
the system fans.
Blinking Amber The server is initialized.
Off None
The server is off or the server is on and is
working correctly.
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 Color Description
On Green The server is on.
Off None The server is off.
24 ThinkServer RD650 User Guide and Hardware Maintenance Manual