NEC PE506UL User Manual page 115

❼ Troubleshooting Check List
Before contacting your dealer or service personnel, check the following list to be sure repairs are needed also by
referring to the "Troubleshooting" section in your user's manual. This checklist below will help us solve your problem
more efficiently.
* Print this page and the next page for your check.
Frequency of occurrence
Power
□ No power (POWER indicator does light orange)� See also "Status Indica-
tor (STATUS)"�
□ Power cord's plug is fully inserted into the wall outlet�
□ No power even though you press and hold the POWER button�
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 or black background, no display)�
□ Still no image even though you press the AUTO ADJUST button�
□ Signal cable's plug is fully inserted into the input terminal�
□ 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] 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�
□ Batteries are new and are not reversed in installation�
□ ID for the projector and for the remote are same�
always sometimes (How often?_____________________)
□ Shut down during operation�
□ Power cord's plug is fully inserted into the wall outlet�
□ [Timer] is turned off�
□ Parts of the image are lost�
□ Still unchanged even though you press the AUTO ADJUST button�
□ 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�
□ Image shows flickering or color drift on a computer signal�
□ Still unchanged even though you change [
□ Image appears blurry or out of focus�
□ Still unchanged even though you checked the signal's resolution
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 terminal)�
□ Buttons on the projector cabinet do not work
□ [Key lock] is not turned on or is disabled in the menu�
100
10. Appendix
other (__________________)
High altitude
] to [Off]�