Lenovo 3821, 3822, 3719, 3823 manual EasyLED diagnostics

EasyLED diagnostics

EasyLED diagnostics is a system of LEDs on various external and internal components of the server. When an error occurs, LEDs are lit throughout the server. By viewing the LEDs in a particular order, you can often identify the source of the error.

When LEDs are lit to indicate an error, they remain lit when the server is turned off, provided that the server is still connected to power and the power supply is operating correctly.

Before you work inside the server to view the EasyLED diagnostics LEDs, read the safety information that begins on page 5.

If an error occurs, view the EasyLED diagnostics LEDs in the following order:

1. Look at the operator information panel LEDs on the front of the server.

vIf an operator information panel LED is lit, it indicates that information about a suboptimal condition in the server is available in the system-event log.

vIf the system-error LED is lit, it indicates that an error has occurred; go to step 2 on page 77.

The following illustration shows the operator information panel LEDs that are visible through the bezel.

System power-on LED

Hard disk drive activity LED

System-locator LED

System-information LED

System-error LED

The following table lists the operator information panel LEDs, the problems that they indicate, and actions to solve the problems.

76ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual