TOP > Basic Information > Using the Operator Panel > Display and Operation of the Operator Panel > LED Indicator LED Indicator The LED indicator lights or flashes to show the current status of the product. The LED indicator shows the following states of the product: LED Indicator Color/Status Description Blue/Lights on Online mode Blue/Flashes When power is on Lights off Power off, Offline mode, or Settings mode Red/Lights on Product error (for example, when the ribbon runs out) Red/Flashes Product error (for example, the product's temperature exceeds the allowable range) Back to top