Chapter 6 Maintenance — TroubleshootingENGLISH - 151TroubleshootingReview the following points. For details, see the corresponding pages.Problems Points to be checked PagePower does not turn on.f Is the power plug firmly inserted into the outlet? ―f Is the switch set to ? 46f Is the wall outlet supplying electricity? ―f Have the circuit breakers tripped? ―f Is the light source indicator blinking? 148f Is the temperature indicator lit or blinking? 149No image appears.f Are connections to external devices correctly performed? 34f Is the input selection setting correct? 47f Is the [BRIGHTNESS] adjustment setting at a minimum? 62f Is the external device that is connected to the projector working properly? ―f Is the shutter function in use? 50, 92f If the power indicator is blinking in red, consult your dealer. ―Image is fuzzy.f Is the lens focus set correctly? 48f Is the projection distance appropriate? 31f Is the lens dirty? 20f Is the projector installed perpendicular to the screen? ―Color is pale or grayish.f Are [COLOR] and [TINT] adjusted correctly? 63f Is the external device connected to the projector adjusted correctly? 34f Is the computer cable damaged? ―Audio is not output.f Is the external device connected correctly to the audio input terminal? 27f Is the mute function used? 50, 108f Is [AUDIO IN SELECT] in [AUDIO SETTING] correctly set? 108Remote control does notrespond.f Are the batteries depleted? ―f Is the polarity of the batteries set correctly? 28f Are there any obstructions between the remote control and the remote controlsignal receiver of the projector? 24f Is the remote control being used beyond its effective operation range? 24f Are other forms of light, such as fluorescent light, affecting the projection? 24f Is the [REMOTE CONTROL] setting in [CONTROL DEVICE SETUP] set to[DISABLE]? 119f Is the ID number setting operation correct? 54Menu screen does notappear. f Is the on-screen display function turned off (hidden)? 51Buttons on the controlpanel do not operate.f Is the [CONTROL PANEL] setting in [CONTROL DEVICE SETUP] set to[DISABLE]? 119Image does not displaycorrectly.f Is [SYSTEM SELECTOR] set properly? 66f Is [COMPUTER IN/OUT] set correctly? 82f Is there a problem with the video tape or other image sources? ―f Is a signal which is not compatible with the projector being input? 167Image from a computerdoes not appear.f Is the cable too long? (For D-Sub cables, the cable length should be 10 m (32'10")or shorter.) ―f Is the external video output on the laptop computer set correctly? (Ex.: The externaloutput settings may be switched by pressing the “Fn” + “F3” keys or the “Fn” + “F10”keys simultaneously. This will differ depending on the model of the computer. Referto the user manual provided with your computer.)―Image output from DVI-Dof the computer does notappear.f Is [EDID SELECT] in [DVI-D IN] set to [EDID3] or [EDID2:PC]? 84f It may improve by updating the graphic accelerator driver of the computer to thelatest version. ―f It may improve by performing the [EDID SELECT] setting in [DVI-D IN], and thenrebooting the computer. 84Video from HDMIcompatible device doesnot appear or it appearsjumbled.f Is the HDMI cable connected securely? 34f Turn the power of the projector and the external device off and on. ―f Is a signal which is not compatible with the projector being input? 167
