Troubleshooting - Mitsubishi NFL9905STTFW User Manual

5
5

TROUBLESHOOTING

PROBLEM
•
Contrast and brightness controls.
LED On
(Green)
•
Power switch.
LED Off
• AC power cord disconnected.
No
picture
•
Signal cable disconnected.
LED On
• Computer power switch.
(Amber)
•
Power management function is active.
The following message appeared.
•
Signal cable disconnected.
•
Computer power switch.
INPUT CHECK
H V
•
Power management function is active.
COLOR CHECK
R G B
The following message appeared.
•
Input signal frequency range is too high or too low for the
ATTENTION ATTENTION
monitor to synchronize with.
SIGNAL FREQUENCY SIGNAL FREQUENCY
IS OUT OF RANGE. IS OUT OF RANGE.
FH FH 24.8KHz 24.8KHz FV FV 43.0Hz 43.0Hz
PLEASE CHANGE PLEASE CHANGE
SIGNAL TIMING. SIGNAL TIMING.
•
Do "GEOMETRY-RESET" for a standard signal.
•
Adjust HORIZ-SIZE, VERT-SIZE, HORIZ-PHASE, and
Display is miss-
VERT-POSITION with non-standard signals.
ing, center shifts,
•
Monitor may not be able to get full-screen image depend on
or too small or too
signal. In this case, please select other resolution, or other
large of a display
vertical refresh timing.
size
• Make sure you wait a few seconds after adjusting the size
of the image before changing or disconnecting the signal.
Display is dark or
• "VIDEO LEVEL" is not at the appropriate position for your
too bright
graphics adapter output.(0.7V or 1.0Vp-p)
Thin vertical black lines on one or both sides of the
•
screen. This minor condition is caused by grille element
overlap which can occur during shipping.
• Position an open white window over the affected area of
the screen and maximize the brightness and contrast
controls. This will cause localized heating of the overlap
Black vertical
which will clear in a few minutes. Be sure to readjust the
lines are visible
brightness and contrast controls back to the normal
on the screen.
viewing levels after this procedure.
Before calling your Authorized Product Support, please
check that the items below are properly connected or set.
In case of using a non-standard signal, please check the
pin assignments and the signal timing of your computer
with the specification outlined in Section 6. SPECIFICA-
TIONS and Section 7. APPENDIX.
ITEMS TO CHECK
- 15 -
LOCATION
•
Front (OSD)
•
Front
•
Rear
•
Rear
•
Computer
•
Press any key on the keyboard
or move the mouse.
•
Rear
•
Computer
•
Press any key on the keyboard
or move the mouse.
•
Check the specification of
graphics adapter.
•
Front (OSD)
•
Front (OSD)
•
Front (OSD)
• –