NEC PX-50XM1A 50MP1 - Page 56
Troubleshooting
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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. • Is a connected component set directly in • Leave some space between the display and front or at the side of the display? the connected components. The remote control unit does not work. • Are the remote control unit's batteries worn out? • Replace both batteries with new ones. Monitor's power does not turn on when the remote control unit's power button is pressed. • Is the monitor's power cord plugged into a • Plug the monitor's power cord into a power power outlet? outlet. • Are all the monitor's indicators off? • Press the power button on the monitor to turn on the power. • Are the remote control unit's batteries worn out? • Replace both batteries with new ones. Monitor does not operate when the remote control unit's buttons are pressed. • Is the remote control unit pointed at the monitor, or is there an obstacle between the remote control unit and the monitor? • Point the remote control unit at the monitor's remote control sensor when pressing buttons, or remove the obstacle. • Is direct sunlight or strong artificial light shining on the monitor's remote control sensor? • Eliminate the light by closing curtains, pointing the light in a different direction, etc. • Are the remote control unit's batteries worn out? • Replace both batteries with new ones. • The remote cable is plugged into the REMOTE IN terminal (Wired). • Unplung the remote cable from the monitor. • The front panel buttons of the main unit • The front panel buttons do not function do not function. during Control Lock. No sound or picture is produced. • Is the monitor's power cord plugged into a • Plug the monitor's power cord into a power power outlet? outlet. Picture appears but no sound is produced. • Is the volume set at the minimum? • Is the mute mode set? • Increase the volume. • Press the remote control unit's MUTE button. • Are the speakers properly connected? • Connect the speakers properly. • Is AUDIO INPUT set correctly? • Set AUDIO INPUT on the OPTION menu correctly. Poor picture with VIDEO signal input. • Improper control setting. Local interference. Cable interconnections. Input impedance is not correct level. • Adjust picture control as needed. Try another location for the monitor. Be sure all connections are secure. Poor picture with RGB signal input. • Improper control setting. Incorrect 15 PIN connector pin connections. • Adjust picture controls as needed. Check pin assignments and connections. Tint is poor or colors are weak. • Are the tint and colors properly adjusted? • Adjust the tint and color (under "PICTURE"). Nothing appears on screen. • Is the computer's power turned on? • Turn on the computer's power. • Is a source connected? • Connect source to the monitor. • Is the power management function in the • Operate the computer (move the mouse, standby or off mode? etc.). Part of picture is cut off or picture is • Is the position adjustment appropriate? • Adjust the "SCREEN" properly. not centered. Image is too large or too small. • Is the screen size adjustment appropriate? • Press the "WIDE" button on the remote control unit and adjust properly. Picture is unstable. • Is the computer's resolution setting appropriate? • Set to the proper resolution. POWER/STANDBY indicator is lighted in orange or red. • Horizontal and / or vertical sync signal is • Check the input signal. not present when the Intelligent Power Manager control is on. POWER/STANDBY indicator is blinking in red. • The temperature inside the main unit has • Promptly switch off the power of the main become too high and has activated the unit and wait until the internal temperature protector. drops. See*1. POWER/STANDBY indicator is blinking in green. ------ • 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 the 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 indicates that the power supply circuit or, one or more fans have been damaged. 49