Testing The Product; Checking The Resolution And Frequency; Check The Followings - Samsung C23A550U User Manual

9
Troubleshooting Guide
9.1 Requirements Before Contacting Samsung Customer
Service Center

9.1.1 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 is turned off and the power indicator blinks even though the product is properly connected
to a PC, perform a self-diagnosis test.
1
Power off both the PC and product.
2
Disconnect the cable from the product.
3
Power on the product.
4
If the Check Signal Cable
If the screen remains blank, check the PC system, video controller and cable.

9.1.2 Checking the Resolution and Frequency

For a mode that exceeds the supported resolution (refer to "10.3Standard Signal Mode Table"), the
message Not Optimum Mode.

9.1.3 Check the followings.

The screen keeps switching on and off.
The power LED is off. The screen will not switch
on.
The message
message appears, the product is working normally.
will appear for a short time.
Installation issue (PC mode)
Check Signal Cable appears.
Check the cable connection between the product
and PC, and ensure the connection is secure.
(Refer to "3.2Connecting and Using a PC")
Screen issue
Check that the power cable is connected
correctly (Refer to "3.2Connecting and Using a
PC")
Check that the cable is properly connected to the
product. (Refer to "3.2Connecting and Using a
PC")
Check that the device connected to the product is
powered on.
9 Troubleshooting Guide
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