Troubleshooting Guide; Requirements Before Contacting Samsung Customer Service Center; Testing The Product; Checking The Resolution And Frequency - Samsung 400BX User Manual

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7.1 Requirements Before Contacting Samsung Customer
Service Center

7.1.1 Testing the Product

Check if your product is operating normally by using the product test function.
If the screen remains blank while the power LED blinks even when the product is correctly connected to
a PC, perform product testing.
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7.1.2 Checking the Resolution and Frequency

"Not Optimum
(refer to Supported Resolutions).
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Troubleshooting Guide

Before calling Samsung Customer Service Center, test your product as follows. If the problem persists,
contact Samsung Customer Service Center.
Power off both the PC and product.
Disconnect all the cables from the product.
Power on the product.
If "No Signal" is displayed, the product is operating normally.
If the screen remains blank, check the PC system, video controller and cable.
Mode" will briefly be displayed if a mode that exceeds a supported resolution is selected
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