LG N1910LZ-BF User Manual - Page 24
Troubleshooting
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EEngNliGsh 24 Troubleshooting TROUBLESHOOTING Nothing is displayed on the screen Is the monitor's power cord plugged in? yy Check if the power cord is correctly plugged in to the outlet. Is the power indicator on? yy Check the power indicator. Is the power indicator displaying as yy Adjust the brightness and the contrast. white? Is the power indicator blinking? yy If the monitor is in power saving mode, move the mouse or press any key on the keyboard to switch the display on. yy Check if the computer is turned on. Is the "OUT OF RANGE" message displayed? yy This occurs when signals transferred from the PC (video card) are out of the horizontal or vertical frequency range of the monitor. Please see the "Product Specification" section of this manual to set the appropriate frequency. Is the "CHECK SIGNAL CABLE" message is displayed? yy This is displayed when the signal cable between the PC and the monitor is missing or disconnected. Check the cable and reconnect. The "OSD LOCKED" message is displayed. Is the "OSD LOCKED" message yy The OSD lock feature is enabled to prevent undesired modification displayed when the MENU button is pressed? of the OSD settings. Press and hold the MENU button for a couple of seconds to unlock the OSD. (The "OSD UNLOCKED" message will be displayed.) The screen retains an image. Does image sticking occur even when the monitor is turned off? yy Displaying a still image for a prolonged time may cause damage to the screen, resulting in the retention of the image. yy Use a screen saver to protect the screen when using the monitor for a prolonged period of time. NOTE yyVertical Frequency: In order to display an image, the screen must be refreshed dozens of times per second like a fluorescent lamp. The number of times the screen is refreshed per second is called vertical frequency or refresh rate and is represented by Hz. yyHorizontal Frequency: The time it takes to display one horizontal line is called the horizontal cycle. The number of horizontal lines displayed in one second can be calculated by dividing one by the horizontal cycle. This is called horizontal frequency and is represented by kHz.