Troubleshooting - Panasonic PT-EZ770T Operating Instructions Manual

Troubleshooting

Review the following points. For details, see the corresponding pages.
Problems
Power does not turn on.
No image appears.
Image is fuzzy.
Color is pale or grayish.
Audio is not output.
Audio is not output from
the built-in speaker.
Remote control does not
respond.
Menu screen does not
appear.
Buttons on the control
panel do not operate.
Image does not display
correctly.
Image from a computer
does not appear.
Image output from DVI-D
of the computer does not
appear.
132 - ENGLISH
Chapter 5 Maintenance — Troubleshooting
f Is the power plug firmly inserted into the outlet?
f Is the <MAIN POWER> switch set to <OFF>?
f Is the wall outlet supplying electricity?
f Have the circuit breakers tripped?
f Is the lamp indicator <LAMP> or the temperature indicator <TEMP> lit or flashing?
f Is the lamp cover attached securely?
f Are connections to external devices correctly performed?
f Is the input selection setting correct?
f Is the [BRIGHTNESS] adjustment setting at a minimum?
f Is the external device that is connected to the projector working properly?
f Is the shutter function in use?
f If the power indicator <ON (G)/STANDBY (R)> is flashing in red, consult your
dealer.
f Is the lens cover still attached to the lens?
f Is the lens focus set correctly?
f Is the projection distance appropriate?
f Is the lens dirty?
f Is the projector installed perpendicular to the screen?
f Is [COLOR] or [TINT] adjusted correctly?
f Is the external device connected to the projector adjusted correctly?
f Is the RGB cable damaged?
f Is the external device connected correctly to the audio input terminal?
f Is [MUTE] in [AUDIO SETTING] set to [ON]?
f Is the audio input selection in [AUDIO SETTING] set correctly?
f Is [BUILT-IN SP] in [AUDIO SETTING] set to [OFF]?
f Is the audio input selection in [AUDIO SETTING] set correctly?
f Are the batteries depleted?
f Is the polarity of the batteries set correctly?
f Are there any obstructions between the remote control and the remote control
signal receiver of the projector?
f Is the remote control being used beyond its effective operation range?
f Are other forms of light, such as fluorescent light, affecting the projection?
f Is the [REMOTE CONTROL] setting in [CONTROL DEVICE SETUP] set to
[DISABLE]?
f Is the <REMOTE 2 IN> terminal used for contact control?
f Is the ID number setting operation correct?
f Is the cable that is connected to the <REMOTE 1 IN> terminal connected to the
remote control wired terminal?
f Is the on-screen display function turned off (hidden)?
f Is the [CONTROL PANEL] setting in [CONTROL DEVICE SETUP] set to
[DISABLE]?
f Is the <REMOTE 2 IN> terminal used for contact control?
f Is the [SYSTEM SELECTOR] selection set correctly?
f 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?
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.: The
external output settings may be switched by pressing "Fn" + "F3" or "Fn" + "F10"
simultaneously. Since the method varies depending on the computer type, refer to
the user manual provided with your computer.)
f Is the [DVI-D IN] setting [EDID3] or [EDID2:PC]?
f The graphics accelerator driver of the computer may need to be updated to the
latest version.
f The computer may need to be restarted after performing the [DVI-D IN] setting.
Points to be checked Page
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