Chapter 5 Maintenance — Troubleshooting136 - ENGLISHTroubleshootingReview 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 ? 49f Is the wall outlet supplying electricity? ―f Have the circuit breakers tripped? ―f Is the lamp indicator or the temperature indicator lit or flashing? 129f Is the lamp cover attached securely? 133No image appears.f Are connections to external devices correctly performed? 42f Is the input selection setting correct? 53f Is the [BRIGHTNESS] adjustment setting at a minimum? 65f Is the external device that is connected to the projector working properly? ―f Is the shutter function in use? 53f If the power indicator is flashing in red, consult yourdealer. ―f Is the lens cover still attached to the lens? 48Image is fuzzy.f Is the lens focus set correctly? 51f Is the projection distance appropriate? 34f Is the lens dirty? 20f Is the projector installed perpendicular to the screen? ―Color is pale or grayish.f Is [COLOR] or [TINT] adjusted correctly? 65f Is the external device connected to the projector adjusted correctly? 42f Is the RGB cable damaged? ―Audio is not output.f Is the external device connected correctly to the audio input terminal? 29f Is [MUTE] in [AUDIO SETTING] set to [ON]? 95f Is the audio input selection in [AUDIO SETTING] set correctly? 95Audio is not output fromthe built-in speaker.f Is [BUILT-IN SP] in [AUDIO SETTING] set to [OFF]? 95f Is the audio input selection in [AUDIO SETTING] set correctly? 95Remote control does notrespond.f Are the batteries depleted? ―f Is the polarity of the batteries set correctly? 30f Are there any obstructions between the remote control and the remote controlsignal receiver of the projector? 27f Is the remote control being used beyond its effective operation range? 27f Are other forms of light, such as fluorescent light, affecting the projection? 27f Is the [REMOTE CONTROL] setting in [CONTROL DEVICE SETUP] set to[DISABLE]? 108f Is the terminal used for contact control? 145f Is the ID number setting operation correct? 30f Is the cable that is connected to the terminal connected to theremote control wired terminal? 31Menu screen does notappear. f Is the on-screen display function turned off (hidden)? 81Buttons on the controlpanel do not operate.f Is the [CONTROL PANEL] setting in [CONTROL DEVICE SETUP] set to[DISABLE]? 108f Is the terminal used for contact control? 145Image does not displaycorrectly.f Is the [SYSTEM SELECTOR] selection set correctly? 68f 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? 148Image 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.: Theexternal output settings may be switched by pressing “Fn” + “F3” or “Fn” + “F10”simultaneously. Since the method varies depending on the computer type, refer tothe user manual provided with your computer.)―Image output from DVI-Dof the computer does notappear.f Is the [DVI-D IN] setting [EDID3] or [EDID2:PC]? 80f The graphics accelerator driver of the computer may need to be updated to thelatest version. ―f The computer may need to be restarted after performing the [DVI-D IN] setting. 80
