Samsung 400CXN - Manual (Page 109)

PC Mode
Q: The LCD Display screen flickers.
A: Check if the signal cable between the computer and the LCD Display is securely connected.
(Refer to Connecting a Computer)
TV Mode
Q: TV screen is blurred or shows noise signals.
A: Check if the TV antenna connector is securely connected to the external antenna.(Refer to
Connecting TV)
Q: TV signal is not received
A: Select "Auto Program" to configure the channel system automatically. (Refer to the Auto Pro-
gram)
Problems related to the Screen
Note
Problems related to the LCD Display screen and their solutions are listed.
Q: The screen is blank and the power indicator is off.
A: Ensure that the power cord is firmly connected and the LCD Display is on.
(Refer to the Connecting a Computer)
Q: "Check Signal Cable" message.
A: Ensure that the signal cable is firmly connected to the PC or video sources.
(Refer to the Connecting a Computer)
A: Ensure that the PC or video sources are turned on.
Q: "Not Optimum Mode" message.
A: Check the maximum resolution and the frequency of the video Adaptor.
A: Compare these values with the data in the Preset Timing Modes Chart.
Q: The picture rolls vertically.
A: Check if the signal cable is securely connected. Re-connect it, if necessary.
(Refer to Connecting a Computer)
Q: The image is not clear; picture is blurred.
A: Run Frequency Coarse and Fine tuning.
A: Turn on again after removing all accessories (video extension cable, etc.)
A: Set the resolution and frequency to the recommended ranges.
Q: The picture image is unstable and shakes.
Troubleshooting