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67
Maintenance
Troubleshooting
Please check following points. For details, see the corresponding pages.
Problem Cause
Reference
page
Power does not turn
on.
The power cord may not be connected.
z
—
No electric supply is at the wall outlet.
z
—
The circuit breakers have tripped.
z
—
I
z
s the <LAMP> indicator, <ON(G)/STANDBY(R)> indicator, or
<WARNING
> indicator lit or blinking?
27, 61
The lamp cover has not been securely installed.
z
—
No picture appears.
The video signal input source may not be connected to a terminal
z
properly.
25
The input selection setting may not be correct.
z
32
The [Brightness] adjustment setting may be at the minimum setting.
z
—
The input source which is connected to the projector may have a
z
problem.
—
The [AV mute] function may be in use.
z
34
The picture is fuzzy.
The lens focus may not have been set correctly.
z
31
The projector may not be at the correct distance from the screen.
z
22
The lens may be dirty.
z
14
The projector may be tilted too much.
z
—
The color is pale or
grayish.
[Color] or [Tint] adjustment may be incorrect.
z
45
The input source which is connected to the projector may not be
z
adjusted correctly.
—
RGB cable is damaged.
z
—
No sound from the
internal speaker
The input terminals may not have been correctly connected.
z
25
The volume may have been set to the minimum level.
z
34
The [AV mute] function may have been turned on.
z
34
When the AUDIO OUT is plugged-in, the projector's built-in speaker is
z
not available.
20
The [Mute] function may have been turned on.
z
35
The remote control
does not operate.
The batteries may be weak.
z
—
The batteries may not have been inserted correctly.
z
21
The remote control signal receptor on the projector may be obstructed.
z
17
The remote control unit may be out of the operation range.
z
17
Strong light such as uorescent shine onto the signal receptor.
z
17
When different codes are set on the projector and on the remote contro
z
l
. 57
The control buttons
of the projector do
not operate.
The control panel is not available if the control panel is locked at [Key
z
lock] under [Security] of [Setting] section.
57
The picture does not
display correctly.
There 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
—
—
Picture from a
computer does not
appear.
The cable may be longer than the optional cable.
z
—
The external video output from a laptop computer may not be correct.
z
—