Samsung OHA 75" 4K Outdoor Commercial Display - Manual (Page 93)

93
Troubleshooting Guide
Requirements Before Contacting Samsung Customer Service Center
– Before calling Samsung Customer
Service Center, test your product
as follows. If the problem persists,
contact Samsung Customer Service
Center.
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 / Remote sensor 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.
Checking the Resolution and Frequency
Not Optimum Mode will briefly be displayed if a mode that exceeds a supported resolution is selected (refer to Supported Preset Timing Modes).
– If the screen remains blank, check the
PC system, video controller and cable.
Chapter 11