NEC PX-42VM1A 42MP1 - Page 52

Troubleshooting If the picture quality is poor or there is some other problem, check the adjustments, operations, etc., before requesting service. Symptom Checks Remedy Picture is disturbed. Sound is noisy. Remote control unit operates erroneously. The remote controller does not work. Monitor's power does not turn on when the remote controller's power button is pressed. Monitor does not operate when the remote controller's buttons are pressed. No sound or picture is produced. Picture appears but no sound is produced. Poor picture with VIDEO signal input. Poor picture with RGB signal input. Tint is poor or colors are weak. • Is a connected component set directly in front or at the side of the display? • Are the remote controller's batteries worn out? • Is the monitor's power cord plugged into a power outlet? • Are all the monitor's indicators off? • Are the remote controller's batteries worn out? • Is the remote controller pointed at the monitor, or is there an obstacle between the remote controller and the monitor? • Is direct sunlight or strong artificial light shining on the monitor's remote control sensor? • Are the remote controller's batteries worn out? • The remote cable is plugged into the REMOTE IN terminal (Wired) • The front panel buttons of the main unit do not function. • Is the monitor's power cord plugged into a power outlet? • Is the volume set at the minimum? • Is the mute mode set? • Are the speakers properly connected? • Is AUDIO INPUT set correctly? • Improper control setting. Local interference. Cable interconnections. Input impedance is not correct level. • Improper control setting. Incorrect 15 PIN connector pin connections. • Are the tint and colors properly adjusted? • Leave some space between the display and the connected components. • Replace both batteries with new ones. • Plug the monitor's power cord into a power outlet. • Press the power button on the monitor to turn on the power. • Replace both batteries with new ones. • Point the remote controller at the monitor's remote control sensor when pressing buttons, or remove the obstacle. • Eliminate the light by closing curtains, pointing the light in a different direction, etc. • Replace both batteries with new ones. • Unplung the remote cable from the monitor. • The front panel buttons do not function during Control Lock. • Plug the monitor's power cord into a power outlet. • Increase the volume. • Press the remote controller's mute button. • Connect the speakers properly. • Set AUDIO INPUT on the OPTION menu correctly. • Adjust picture control as needed. Try another location for the monitor. Be sure all connections are secure. • Adjust picture controls as needed. Check pin assignments and connections. • Adjust the tint and color (under "PICTURE"). Nothing appears on screen. Part of picture is cut off or picture is not centered. Image is too large or too small. Picture is unstable. POWER/STANDBY indicator is lighted in orange or red. POWER/STANDBY indicator is blinking in red. POWER/STANDBY indicator is blinking in green. • Is the computer's power turned on? • Is a source connected? • Is the power manager function in the standby or off mode? • Is the position adjustment appropriate? • Is the screen size adjustment appropriate? • Is the computer's resolution setting appropriate? • Horizontal and / or vertical sync signal is not present when the Intelligent Power Manager control is on. • The temperature inside the main unit has become too high and has activated the protector. • Turn on the computer's power. • Connect source to the monitor. • Operate the computer (move the mouse, etc.). • Adjust the "SCREEN" properly. • Press the "WIDE" button on the remote controller and adjust properly. • Set to the proper resolution. • Check the input signal. • Promptly switch off the power of the main unit and wait until the internal temperature drops. See*1. • Prompty switch off the power of the main unit. See *2. *1 Overheat protector If the monitor becomes too hot, the overheat protector will be activated and the monitor will be turned off. If this happens., turn off the power to the monitor and unplug the power cord. If the room where the monitor is installed is particularly hot, move monitor to a cooler location and wait for the monitor to cool for 60 minutes. If the problem persists, contact your NEC dealer for service. *2 In the following case, power off the monitor immediately and contact your dealer or authorized NEC Center. The monitor turns off 5 seconds after powering on and then the POWER/STANDBY indicator blinks. It indicators that the power supply circuit or, one more fans have been damaged. 45