Panasonic PT-EZ770ZU User Manual
Chapter 5 Maintenance — Troubleshooting
136 - ENGLISH
Troubleshooting
Review the following points. For details, see the corresponding pages.
Problems
Points to be checked
Page
Power does not turn on.
f
Is the power plug firmly inserted into the outlet?
―
f
Is the <MAIN POWER> switch set to <OFF>?
49
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?
129
f
Is the lamp cover attached securely?
133
No image appears.
f
Are connections to external devices correctly performed?
42
f
Is the input selection setting correct?
53
f
Is the [BRIGHTNESS] adjustment setting at a minimum?
65
f
Is the external device that is connected to the projector working properly?
―
f
Is the shutter function in use?
53
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?
48
Image is fuzzy.
f
Is the lens focus set correctly?
51
f
Is the projection distance appropriate?
34
f
Is the lens dirty?
20
f
Is the projector installed perpendicular to the screen?
―
Color is pale or grayish.
f
Is [COLOR] or [TINT] adjusted correctly?
65
f
Is the external device connected to the projector adjusted correctly?
42
f
Is the RGB cable damaged?
―
Audio is not output.
f
Is the external device connected correctly to the audio input terminal?
29
f
Is [MUTE] in [AUDIO SETTING] set to [ON]?
95
f
Is the audio input selection in [AUDIO SETTING] set correctly?
95
Audio is not output from
the built-in speaker.
f
Is [BUILT-IN SP] in [AUDIO SETTING] set to [OFF]?
95
f
Is the audio input selection in [AUDIO SETTING] set correctly?
95
Remote control does not
respond.
f
Are the batteries depleted?
―
f
Is the polarity of the batteries set correctly?
30
f
Are there any obstructions between the remote control and the remote control
signal receiver of the projector?
27
f
Is the remote control being used beyond its effective operation range?
27
f
Are other forms of light, such as fluorescent light, affecting the projection?
27
f
Is the [REMOTE CONTROL] setting in [CONTROL DEVICE SETUP] set to
[DISABLE]?
108
f
Is the <REMOTE 2 IN> terminal used for contact control?
145
f
Is the ID number setting operation correct?
30
f
Is the cable that is connected to the <REMOTE 1 IN> terminal connected to the
remote control wired terminal?
31
Menu screen does not
appear.
f
Is the on-screen display function turned off (hidden)?
81
Buttons on the control
panel do not operate.
f
Is the [CONTROL PANEL] setting in [CONTROL DEVICE SETUP] set to
[DISABLE]?
108
f
Is the <REMOTE 2 IN> terminal used for contact control?
145
Image does not display
correctly.
f
Is the [SYSTEM SELECTOR] selection set correctly?
68
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?
148
Image from a computer
does not appear.
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.)
―
Image output from DVI-D
of the computer does not
appear.
f
Is the [DVI-D IN] setting [EDID3] or [EDID2:PC]?
80
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.
80