Troubleshooting Check List - NEC NP3150 User Manual

Troubleshooting Check List

P
Frequency of occurrence
Power
No power (POWER indicator does not light green)
"Status Indicator (STATUS)".
Power cable's plug is fully inserted into the wall outlet.
Main power switch is pressed to the ON position.
Lamp cover is installed correctly .
Lamp Hours Used (lamp operation hours) was cleared after
lamp replacement.
No power even though you press and hold the POWER but-
ton for a minimum of 2 seconds.
Video and Audio
No image is displayed from your PC or video equipment to the
projector.
Still no image even though you connect the projector to the
PC first, then start the PC.
Enabling your notebook PC's signal output to the projector.
• A combination of function keys will enable/disable the
external display. Usually, the combination of the "Fn" key
along with one of the 12 function keys turns the external
display on or off.
No image (blue background, logo, no display).
Still no image even though you press the AUTO ADJUST but-
ton.
Still no image even though you carry out [RESET] in the pro-
jector's menu.
Signal cable's plug is fully inserted into the input connector
A message appears on the screen.
( _____________________________________________ )
The source connected to the projector is active and available.
Still no image even though you adjust the brightness and/or
the contrast.
Input source's resolution and frequency are supported by the
projector.
Image is too dark.
Remains unchanged even though you adjust the brightness
and/or the contrast.
Image is distorted.
Image appears to be trapezoidal (unchanged even though
you carry out the [KEYSTONE] or [3D REFORM] adjustment).
Other
Remote control does not work.
No obstacles between the sensor of the projector and the
remote control.
Projector is placed near a fluorescent light that can disturb
the infrared remote controls.
T H E T R U S T E D S O U R C E F O R P R O J E C T O R L A M P S A N D A C C E S S O R I E S
Batteries are new and are not reversed in installation.
If present on the remote control, projector selector switch is
not used.
always sometimes (How often?_____________________)
See also Shut down during operation.
Power cable's plug is fully inserted into the wall outlet.
Lamp cover is installed correctly .
Power Management is turned off (only models with the
Power Management function).
Off Timer is turned off (only models with the Off Timer func-
tion ).
Parts of the image are lost.
Still unchanged even though you press the AUTO ADJUST
button.
Still unchanged even though you carry out [RESET] in the
projector's menu.
Image is shifted in the vertical or horizontal direction.
Horizontal and vertical positions are correctly adjusted on a
computer signal.
Input source's resolution and frequency are supported by the
projector.
Some pixels are lost.
Image is flickering.
Still unchanged even though you press the AUTO ADJUST
button.
Still unchanged even though you carry out [RESET] in the
projector's menu.
Image shows flickering or color drift on a computer signal.
Still unchanged even though you change [FAN MODE] from
[HIGH ALTITUDE] to [AUTO].
Image appears blurry or out of focus.
Still unchanged even though you checked the signal's resolu-
tion on PC and changed it to projector's native resolution.
Still unchanged even though you adjusted the focus.
No sound.
Audio cable is correctly connected to the audio input of the
projector.
Still unchanged even though you adjusted the volume level.
AUDIO OUT is connected to your audio equipment (only
models with the AUDIO OUT connector).
Buttons on the projector cabinet do not work ( only models with
the Control Panel Lock function).
Control Panel Lock is not turned on or is disabled in the menu.
Still unchanged even though you press and hold the EXIT
button for a minimum of 10 seconds.
150
9. Appendix
other (__________________)