Samsung 720N User Manual (ENGLISH) - Page 29

Check List Before calling for service, check the information in this section to see if you can remedy any problems yourself. If you do need assistance, please call the phone number on the Information section or contact your dealer. Symptom No images on the screen. I cannot turn on the monitor. Check List Solutions Is the power cord connected properly? Check the power cord connection and supply. Can you see "Check Signal Cable" Check the signal cable connection. on the screen? If the power is on, reboot the computer to see the initial screen (the login screen), which can be seen. If the initial screen (the login screen) appears, boot the computer in the applicable mode (the safe mode for Windows ME/XP/2000) and then change the frequency of the video card. (Refer to the Preset Timing Modes) Note: If the initial screen (the login screen) does not appear, contact the Service Center or your dealer. Can you see "Not Optimum Mode","Recommanded Mode 1280 x 1024 60 Hz" on the screen? You can see this message when the signal from the video card exceeds the maximum resolution and frequency that the monitor can handle properly. Adjust the maximum resolution and frequency that the monitor can handle properly. If the display exceeds SXGA or 75 Hz, a "Not Optimum Mode","Recommanded Mode 1280 x 1024 60 Hz" message is displayed. If the display exceeds 85Hz, the display will work properly but the "Not Optimum Mode","Recommanded Mode 1280 x 1024 60 Hz" message appears for one minute and then disappears.