11.1 Requirements Before Contacting Samsung Customer
11.1.1 Testing the Product
Before calling Samsung Customer Service Center, test your product as follows. If the problem persists,
contact Samsung Customer Service Center.
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.
Power off both the PC and product.
Disconnect all the cables from the product.
Power on the product.
Signal" is displayed, the product is operating normally.
If the screen remains blank, check the PC system, video controller and cable.
11.1.2 Checking the Resolution and Frequency
(refer to Supported Resolutions).
11.1.3 Check the followings.
The screen keeps switching on and off.
Blank spaces are found on all four sides of the
screen when an HDMI or HDMI-DVI cable is
connected to the product and PC.
Mode" will briefly be displayed if a mode that exceeds a supported resolution is selected
Installation issue (PC mode)
Check the cable connection between the product
and PC, and ensure the connection is secure.
("2.2 Connecting and Using a PC")
The blank spaces found on the screen have nothing
to do with the product.
Blank spaces on the screen are caused by the PC or
graphics card. To resolve the problem, adjust the
screen size in the HDMI or DVI settings for the
If the graphics card settings menu does not have an
option to adjust the screen size, update the graphics
card driver to the latest version.
(Please contact the graphics card or computer
manufacturer for further details about how to adjust
the screen settings.)
11 Troubleshooting Guide