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T640 Standard Control Boards LEDs

 

Three LEDs, located on the standard control board faceplate, indicate the status of the control board.. Table 1 describes the functions of the standard control board LEDs.

Table 1: Standard Control Board LEDs

Label

Color

State

Description

MASTER

Blue

On steadily

Control board is functioning as the master.

FAIL

Yellow

On steadily

Control board has failed.

OK

Green

On steadily

Control board is online and is functioning normally.

Blinking

Control board is powering up, but not online.