Chapter 6
Maintenance — Troubleshooting
138 - 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 rmly inserted into the outlet?
―
f
Is the <MAIN POWER> switch set to <OFF>?
46
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 blinking?
130
f
Is the lamp cover attached securely?
136
No image appears.
f
Are connections to external devices correctly performed?
36
f
Is the input selection setting correct?
47
f
Is the [BRIGHTNESS] adjustment setting at a minimum?
61
f
Is the external device that is connected to the projector working properly?
―
f
Is the AV mute function in use?
50, 85
f
Is the lens cover still attached to the lens?
42
Image is fuzzy.
f
Is the lens focus set correctly?
48
f
Is the projection distance appropriate?
32
f
Is the lens dirty?
22
f
Is the projector installed perpendicular to the screen?
―
Color is pale or grayish.
f
Is [COLOR] or [TINT] adjusted correctly?
62
f
Is the external device connected to the projector adjusted correctly?
―
f
Is the RGB cable damaged?
―
Audio is not output.
f
Is the external device connected correctly to the audio input terminal?
28
f
Is [MUTE] in [AUDIO SETTING] set to [ON]?
93
f
Is the audio input selection in [AUDIO SETTING] set correctly?
93
Audio is not output from
the built-in speaker.
f
Is [BUILT-IN SP] in [AUDIO SETTING] set to [OFF]?
92
f
Is the audio input selection in [AUDIO SETTING] set correctly?
93
Remote control does not
respond.
f
Are the batteries depleted?
―
f
Is the polarity of the batteries set correctly?
29
f
Are there any obstructions between the remote control and the remote control signal
receiver of the projector?
26
f
Is the remote control being used beyond its effective operation range?
26
f
Are other forms of light, such as uorescent light, affecting the projection?
26
f
Is the [REMOTE CONTROLLER] setting in [CONTROL DEVICE SETUP] set to
[DISABLE]?
99
f
Is the ID number setting operation correct?
55
Menu screen does not
appear.
f
Is the on-screen display function turned off (hidden)?
51
Buttons on the control
panel do not operate.
f
Is the [CONTROL PANEL] setting in [CONTROL DEVICE SETUP] set to [DISABLE]?
99
Image does not display
correctly.
f
Is the [TV-SYSTEM], [RGB/YC
B
C
R
]/[RGB/YP
B
P
R
] selection set correctly?
65
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?
149
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 the “Fn” + “F3” or “Fn” + “F10”
simultaneously. Since the method varies depending on the computer type, refer to
the user manual provided with your computer.)
―
Video from HDMI
compatible device does
not appear or it appears
jumbled.
f
Is the HDMI cable connected securely?
36
f
Turn off and on the power of the projector and the external device.
―
f
Is a signal which is not compatible with the projector being input?
149
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