To turn LED light on or off on Autosampler tower press front or back injector button on 7890 GC, scroll all the way down using down arrow button on keypad until you see LED light option, then press on button on keypad, then press enter button and light should come on. Press off button, then enter button to turn light off.
To turn light on or off using 6890 GC, on keypad press config button, front or back injector button scroll down to LED light function, press on or off button and press enter to turn LED light on or off.
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