TroubleshootingPlease check following points. For details, see the corresponding pages.Problem Cause ReferencepagePower does not turn on.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 the warning indicator lit or blinking?f The lamp cover has not been securely installed.———115118No picture appears.f The video signal input source may not be connected to a terminal properly.f The video input selection setting may not be correct.f The [BRIGHTNESS] adjustment setting may be at the minimum setting.f The input source which is connected to the projector may have a problem.f The AV MUTE function may be in use.354356—46, 73The 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.21443220—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 adjusted correctly.f The computer cable is damaged.56, 57——No sound from theinternal speaker.f The input terminals may not have been correctly connected.f The volume may have been set to the minimum level.f The AV MUTE function may have been turned on.f When the VARIABLE AUDIO OUT is plugged-in, the projector’s built-in speaker is notavailable.f The MUTE function may have been turned on.f Is the audio input selection in [AUDIO SETTING] set correctly?3546, 7946, 733546, 7979The remote control doesnot operate.f The batteries may be weak.f The batteries may not have been inserted correctly.f The remote control signal receptor on the projector may be obstructed.f The remote control unit may be out of the operation range.f Strong light such as fluorescent shines onto the signal receptor.f The [REMOTE CONTROLLER] setting is set to [DISABLE] in [CONTROL DEVICE SETUP].f Is the ID number setting operation correct?—272424248349The control buttons of theprojector do not operate. f The [CONTROL PANEL] setting is set to [DISABLE] in [CONTROL DEVICE SETUP]. 83The picture does notdisplay correctly.f Is the [TV-SYSTEM], [RGB/YCBCR]/[RGB/YPBPR] selection set 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.59—128Picture from a computerdoes not appear.f Is the cable too long? (For D-Sub cables, the cable length should be 10 m (32'10") orshorter.)f Is the external video output on the laptop computer set correctly? (Ex.: The external outputsettings may be switched by pressing the “Fn” + “F3” or “Fn” + “F10” simultaneously. Sincethe method varies depending on the computer type, refer to the user manual provided withyour computer.)——Picture from a HDMIdevice does not appearor picture is not stable.f Is the HDMI cable securely connected?f Turn off the power of the projector and the connected devices. Then turn the power of theprojector and the connected devices back on.f Isn’t unsupported signal cable connected?35, 36—128No sound is output froma HDMI device. f Set the sound channel of the attached device to Linear PCM. —Attentionf If the problem persists, after confirming the contents of the table, please consult your dealer.120 - ENGLISHChapter 6 Maintenance - Troubleshooting
