Lenovo TD100X manual Error LEDs

Error LEDs

The following is an illustration of the system board LEDs.The system board has error LEDs that will help to locate the source of the error. Run the diagnostic programs to find out the cause of the error (see “Running the diagnostic programs” on page 189).

DIMM error LEDs 1 through 12

Microprocessor mismatch

LED

Slot 1 error LED

DIMM LEDs

612

511

410

39

28

17

Microprocessor 1 error LED

Microprocessor 2 error LED

VRM error

LED

Battery LED

Slot 2 error LED

Slot 3 error LED

Slot 4 error LED

Slot 5 error LED

Slot 6 error LED

BMC heartbeat

LED

ServeRAID error LED

The server is designed so that LEDs remain lit when the server is connected to an ac power source but is not turned on, provided that the power supply is operating correctly. This feature helps you to isolate the problem when the operating system is shut down.

Many errors are first indicated by a lit system-error LED on the control-panel assembly of the server. If this LED is lit, one or more LEDs elsewhere in the server might also be lit and can direct you to the source of the error.

Important: If the system-error LED on the front of the server is lit but there are no other error indications, clear the BMC system event log. This log does not clear itself, and if it begins to fill up, the system-error LED will be lit. Also, after you complete a repair or correct an error, clear the BMC system event log to turn off the system-error LED on the front of the server.

Before working inside the server to view the LEDs, read the safety information that begins on page vii and “Handling static-sensitive devices” on page 75.

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

1.Check the control-panel assembly on the front of the server. If the system-error LED is lit, it indicates that an error has occurred.

186ThinkServer TD100 and TD100x: Hardware Maintenance Manual