Panasonic PT-LB75VU Operating Instructions Manual

Also see for PT-LB75VEA: Operating instructions Brochure & specs

Contents

Panasonic PT-LB75VU Operating Instructions Manual Manual pdf 51 page image

TroubleshootingMaintenanceENGLISH - 51TroubleshootingConfirm the following problem and cause.Should any problem persist, contact an Authorized Service Center.Problem Cause PagePower does not turn on.The power cord may not be connected securely.z 19No electric supply at the wall outlet.z 21The circuit breakers have tripped.z —TEMPz or LAMP indicator is lit or flashes. 46The lamp unit cover has not been securely installed.z 49The control buttons arez LOCKED. 44CONTROL PANELz in the PROJECTOR SETUP menu is invalidated. 44No picture appears.The audio signal source may not be connected properly.z 17, 18The input selection setting may not be correct.z 23Thez BRIGHTNESS adjustment setting may be at the minimum setting. 30The signal input source may not be operating properly.z —Thez AV MUTE function may be in use. 24The picture is fuzzy.The lens focus may not have been set correctly.z 23The projector may not be at the correct distance from the screen.z 15The lens may be dirty.z 47The projector may be tilted too much.z 15Color is pale or grayish.COLORz or TINT adjustment may be incorrect. 30The input source which is connected to the projector may not be adjustedzcorrectly.—No sound can beheard from the internalspeaker.The audio signal source may not be connected properly.z 17, 18The volume adjustment may be at the lowest possible setting.z 25, 41A cable may be connected to thez VARIABLE AUDIO OUT terminal. 13The remote control doesnot operate.The batteries may be weak.z —The batteries may not have been inserted correctly.z 14The remote control signal receptor on the projector may be obstructed.z 14The remote control unit may be out of the operation range.z 14REMOTE CONTROLLERz in the PROJECTOR SETUP menu isinvalidated.44The remote control is under a strong light such as fluorescent.z 14The control buttonsof the projectordo not operate.CONTROL PANELz in the PROJECTOR SETUP menu is invalidated.(If you have a loss of the remote control while the CONTROL PANEL isinvalidated, press and hold the MENU button for 2 seconds by pressing theENTER button.)44The picture does notdisplay correctly.Tz he signal format (TV-SYSTEM, RGB/YPB PR) may not have been setcorrectly.31There may be a problem with the VCR or other signal source.z —A signal which is not compatible with the projector is being input.z 52Picture from a computerdoes not appear.The RGB signal cable is too long. (Limit to 10 m (32'10").)z —The external video output from a laptop computer may not be correct.z(You may be able to change the external output settings by pressing the[Fn] + [F3] or [Fn] + [F10] keys simultaneously. The actual method variesdepending on the type of computer; refer to the documentation providedwith your computer for further details.)36The projector cannot becontrolled through serialterminal.EMULATEz in the PROJECTOR SETUP menu is not set correctly. (If youfail to select your product series, ask your dealer for repair. )40NoteIf the projector does not operate normally after the above remedies are taken, contact an Authorized Service Center.z