Panasonic PT VX400NTU - Manual (Page 71)

ENGLISH -
71
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 —
Is the <LAMP REPLACE> indicator, <POWER> indicator, or z
<WARNING> indicator lit or blinking?
30, 65
The lamp cover has not been securely installed. z 69
No picture appears.
The video signal input source may not be connected to a terminal z
properly.
28
The input selection setting may not be correct. z 38
The [Brightness] adjustment setting may be at the minimum setting. z 49
The input source which is connected to the projector may have a z
problem.
—
The [AV mute] function may be in use. z 39
The picture is fuzzy.
The lens focus may not have been set correctly. z 34
The projector may not be at the correct distance from the screen. z 26
The lens may be dirty. z 16
The projector may be tilted too much. z —
The color is pale or
grayish.
[Color] or [Tint] adjustment may be incorrect. z 49
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 28
The volume may have been set to the minimum level. z 36, 55
The [AV mute] function may have been turned on. z 39
When the AUDIO OUT is plugged-in, the projector's built-in speaker is
z
not available.
23
The [Mute] function may have been turned on. z 38, 55
The remote control
does not operate.
The ON/OFF switch on the remote control is set to “OFF". z
The batteries may be weak. z
—
—
The batteries may not have been inserted correctly. z 24
The remote control signal receptor on the projector may be obstructed. z 20
The remote control unit may be out of the operation range. z 20
Strong light such as fluorescent shine onto the signal receptor. z 20
When different codes are set on the projector and on the remote contro z l . 61
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.
61
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
—
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