Lenovo ThinkServer RD440 - Manual (Page 36)

5 System error LED
The system error LED helps you to determine if there are any system errors.
• Off: The server is off or the server is on and working correctly.
• Amber: The server has potential system errors. Check the information in the following table for potential
system errors and corresponding solutions.
Potential system error (system error LED: amber) Solution
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 action must be performed only by Lenovo
service personnel. See Chapter 8 “Getting information,
help, and service” on page 209.
A fan is 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.
A power cord has been disconnected or a redundant
power supply has been removed. 1. Ensure that the power supplies are installed securely.
2. Ensure that the power cords are connected securely
to the power supplies.
3. Install a new power supply to replace the removed
one.
The system is overheated. Check the BMC for errors and then check the system
fans.
6 Front USB connectors
Used to attach a USB-compatible device, such as a USB keyboard, mouse, scanner, or printer. If you
have more than six USB devices, you can purchase a USB hub, which you can use to connect additional
USB devices.
7 VGA DB-15 connector
Used to attach a VGA-compatible video device, such as a VGA monitor.
Diagnostic module
This topic applies only to the following server models:
• Server models with eight 3.5-inch hard-disk-drive bays
• Server models with 2.5-inch hard-disk-drive bays
This topic provides information about the diagnostic module and the diagnostic LEDs on the panel of the
module. To locate the diagnostic panel, see “Front view of the server” on page 16.
Some server models come with one of the following diagnostic modules:
• Intelligent Diagnostics Module (IDM)
24 ThinkServer RD440 User Guide and Hardware Maintenance Manual