Samsung QB43C User Manual

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96Troubleshooting Guide" Follow the instruction on theright to test your product beforerequesting for service. If theproblem persists, contact SamsungCustomer Service Centre." The power indicator may not besupported depending on the model.Requirements Before Contacting Samsung Customer Service CentreTesting the ProductCheck if your product is operating normally by using the product test function.If the screen remains blank while the power indicator blinks even when the product is correctly connected to a PC, perform product testing.1 Power off both the PC and product.2 Disconnect all the cables from the product.3 Power on the product.4 If No Cable Connected is displayed, the product is operating normally.If the screen remains blank, check the PC system, video controller and cable.Checking the Resolution and FrequencyFor modes that exceed the supported resolutions, the message "Not Optimum Mode" appears briefly.Refer to Preset Timing Modes to set the PC resolution for your model.Chapter 07