NEC P554U - 9 Troubleshooting Check List

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8. Appendix
9 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efciently.
* Printthispageandthenextpageforyourcheck.
Frequency of occurrence □ always □ sometimes (How often?_____________________) □ other (__________________)
Power
□
No power (POWER indicator does not light blue) See also “Status
Indicator (STATUS)”�
□
Power cord’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 button�
□
Shut down during operation�
□
Power cord’s plug is fully inserted into the wall outlet�
□
Lamp cover is installed correctly �
□
[AUTO POWER OFF] is turned off (only models with the [AUTO
POWER OFF] function)�
□
[OFF TIMER] is turned off (only models with the [OFF TIMER]
function)�
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�
□
Still no image even though you carry out [RESET] in the projec-
tor’s menu�
□
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)�
□
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 projec-
tor’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 projec-
tor’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 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)�
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�
□
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 SOURCE button
for a minimum of 10 seconds�