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Mitsubishi XD700U Manual

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EN-54
Troubleshooting (continued)
No image appears on the screen. (continued)
Problem Solution
The screen for
entering the password
appears.
• PasswordinthePasswordmenuhasbeensettoOntoenablethepasswordlock.
Enter the password or contact the person in charge of management of the
projector. (See page 48.)
“No signal” is
displayed.
• Turnonthepoweroftheconnecteddevice,orcheckwhetherthereissomething
wrong with the connected device.
• Checkwhethertheexternaldeviceoutputsignals.(Checkthisespeciallywhenthe
external device is a notebook computer.)
• Checkthatthecableconnectedtotheexternaldeviceisn’tdefective.
• Checkthattheprojectorisconnectedtotheexternaldeviceusingthecorrect
terminals.
• Checkthattheconnecteddeviceiscorrectlyselectedastheinputsource.
• Whenanextensioncordisbeingused,replaceitwiththesuppliedcableandcheck
whether images are projected correctly. If images are projected correctly, use an RGB
signal amplifier along with the extension cord.
Images are not displayed correctly.
Problem Solution
Projected images are
shaking.
Projected images are
displaced.
• Checkthatthecableconnectedtotheexternaldeviceisn’tintermittent.
• Connectthecable’splugwiththeexternaldevice’sconnectorrmly.
• PresstheAUTOPOSITIONbutton.
• Somecomputersoutputout-of-specsignalsonrareoccasion.AdjusttheSignal
menu. (See page 25.)
• WhentheinputsignalisaWXGAvideosignal,conrmthesettingselectedinWXGA
in the Option menu.
• WhentheinputsignalisotherthanaWXGAvideosignal,selectOffinWXGAinthe
Option menu.
Projected images are
distorted.
• Adjusttheprojectorandthescreensothattheyareperpendiculartoeachother.(See
page 16.)
Projected images are
dark.
• AdjustBrightnessandContrastinthePicturemenu.(Seepage31.)
• Replacethelamp.(Seepage51.)
Projected images are
blurred.
• Adjustthefocus.(Seepage17.)
• Cleanthelens.
• Pressthe or button on the remote control to eliminate flicker.
• AdjustTrackingandFinesyncintheSignal menu. (See page 25.)
• AdjustBrightness and Contrast in the Picture menu. (See page 31.)
• Adjusttheprojectorandthescreensothattheyareperpendiculartoeachother.(See
page 16.)
Afterimages persist on
the screen.
• This phenomenon is improved by keeping projecting an evenly bright image. (Such
“image burn-in” phenomenon where afterimages persist on the screen may occur if a
stationary image is kept displayed on the screen for a long time.)
White dots are seen
on projected images.
Black dots are seen
on projected images.
• ThisphenomenonisnormalforaDLP™projectorandisnotamalfunction.(Avery
small number of pixels may visibly or invisibly be persistent all the time, but they are
notasignofsystemmalfunctions.Over99.99%ofthepixelsareeffective.)
Fine streaks are seen
on projected images.
• Thisisduetointerferencewiththescreensurfaceandisnotamalfunction.Replace
the screen or displace the focus a little.
• Verticalorhorizontalstreaknoisemayappearontheprojectedimage,dependingon
the type of the DVD player, game console or computer you use. In such a case, you
can reduce such streak noise by enabling the LPF.
… 54 …


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