LG M4210N-B21 Owner's Manual (English) - Page 27

Troubleshooting No image is displayed G Is the product power cord connected? • See if the power cord is properly connected to the outlet. G Is the power indicator light on? • See if the power switch is turned on. G Power is on, power indicator is green • Adjust brightness and contrast again. but the screen appears extremely dark. G Is the power indicator amber? • If the product is in power saving mode, move the mouse or press any key. G Does the 'Out of range' message appear? • The signal from the PC (video card) is out of the vertical or horizontal frequency range of the product. Adjust the frequency range by referring to the Specifications in this manual. * Maximum resolution RGB : 1280 X 1024 @60Hz DVI : 1280 X 1024 @60Hz - It may not be supported depending on the OS or video card type. G Does the 'Power saving mode DVI' message appear? • Connect the RGB cable, and then change the input source to 'RGB'. And then, press the MENU button to set the PC Control value of the SPECIAL menu to 'On'. Disconnect RGB cable, and turn off the power, and then turn power again. G Does the 'Check signal cable' message appear? • The signal cable between PC and product is not connected. Check the signal cable. • Press the 'INPUT' menu in the remote Control to check the input signal. G Did you check the INPUT Key? • Press the 'INPUT' menu in the remote Control to check the input signal. Note * Vertical frequency: To enable the user to watch the product display, screen image should be changed tens of times every second like a fluorescent lamp. The vertical frequency or refresh rate is the times of image display per second. The unit is Hz. * Horizontal frequency: The horizontal interval is the time to display one vertical line. When 1 is divided by the horizontal interval, the number of horizontal lines displayed every second can be tabulated as the horizontal frequency. The unit is kHz. 27