TroubleshootingPlease check following points. For details, see the corresponding pages.Problem Cause ReferencepagePower does not turnon.f The power cord may not be connected.f No electric supply is at the wall outlet.f The circuit breakers have tripped.f Is the lamp indicator or temperature indicator lit or blinking?f The lamp cover has not been securely installed.———127130No picture appears.f Are connections to external devices correctly performed?f The input selection setting may not be correct.f The [BRIGHTNESS] adjustment setting may be at the minimum setting.f Is the external device that is connected to the projector working properly?f The AV MUTE function may be in use.374557—50, 77The picture is fuzzy.f The lens cap is still attached to the lens.f The lens focus may not have been set correctly.f The projector may not be at the correct distance from the screen.f The lens may be dirty.f The projector may be tilted too much.22453219—The color is pale orgrayish.f [COLOR] or [TINT] adjustment may be incorrect.f The input source which is connected to the projector may not be adjustedcorrectly.f RGB cable is damaged.58——No sound from theinternal speaker.f Is the external device connected correctly to the audio input terminal?f The volume may have been set to the minimum level.f The AV MUTE function may have been turned on.f When the terminal is plugged-in, the projector's built-in speaker is not available.f The MUTE function may have been turned on.f Is the audio input selection in [AUDIO SETTING] set correctly?37, 3847, 8250, 7737, 3850, 8282The remote controldoes not operate.f The batteries may be weak.f The batteries may not have been inserted correctly.—28f The remote control signal receiver on the projector may be obstructed. 25f The remote control unit may be out of the operation range. 25f Strong light such as fluorescent shine onto the signal receiver. 25f The [REMOTE CONTROLLER] setting is set to [DISABLE] in [CONTROLDEVICE SETUP]. 87f Is the ID number setting operation correct? 50Menu screen does notappear. f Is the on-screen display function turned off (hidden)? 71The control buttons ofthe projector do notoperate.f The [CONTROL PANEL] setting is set to [DISABLE] in [CONTROL DEVICESETUP]. 87The picture does notdisplay correctly.f There may be a problem with the VCR or other signal source.f A signal which is not compatible with the projector is being input.—142Picture from acomputer does notappear.f The cable may be longer than the optional cable.f The external video output from a laptop computer may not be correct.——Video from HDMIcompatible devicedoes not appear or itappears jumbled.f Is the HDMI cable securely connected?f Turn off the power of the projector and the connected devices. Then turn thepower of the projector and the connected devices back on.f Is a signal which is not compatible with the projector being input?37, 38—142Audio from HDMIcompatible devicedoes not appear.f Set to the linear PCM audio for the connected devices. —No picture or sound isoutput from DIGITALLINK input.f Are the connections between the twisted-pair-cable transmitter and the projectoror an external device correctly done?f Is [DIGITAL LINK MODE] set to [AUTO] or [DIGITAL LINK]? Is it set to[ETHERNET]?f Is a signal which is not compatible with a twisted-pair-cable transmitter beinginput?—88—132 - ENGLISHChapter 6 Maintenance - Troubleshooting
