Troubleshooting - Mitsubishi Diamond Pro 87TXM User Manual

5
5

TROUBLESHOOTING

Before calling MITSUBISHI 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 Chapter 6 and 7.
PROBLEM
LED
On
LED
Off
No
picture
LED
Blinking
Un-stable
picture
Abnormal
picture
No green
color with
BNC
Display is missing,
center shifts, or
too small or too
large of a display
size
Display is not
stable
Display is dark
or too bright
ITEMS TO CHECK
•
Contrast and brightness controls.
•
Power switch.
•
AC power cord disconnected.
•
Signal cable disconected.
•
BNC cables are misconnected or the
green cable is disconnected.
•
Computer power switch.
•
Power management function is active.
•
BNC cables are misconnected.
•
Input signal frequency range in dis-
agreement.
CGA MODE is not available.
MDA MODE is not available.
EGA MODE is not available.
•
BNC cables are misconnected.
(Green and composit sync. connection is
reversed)
•
Push the RESET for a standard signal.
•
Adjust H-SIZE, V-SIZE, H-PHASE, and
V-POSITION with non-standard signals.
•
Make sure you wait a few second after
adjusting the size of the image before
changing or disconnecting the signal or
powering OFF the monitor.
•
BNC cables are misconnected.
•
Input video signal level select is not at
the appropriate position for your grap-
hics adapter output.(0.7V or 1.0Vp-p)
30
LOCATION
•
Front (Adjust to the
maximum brightness
or push the reset
button)
•
Front
•
Rear
•
Rear
•
Check the graphics
adapter and cables
•
Computer
•
Check the power
management
function.(see P27)
•
Rear
•
Check the specifica-
tion of graphics
adapter and monitor
•
Rear
•
Front (OSD)
•
Front (OSD)
•
Rear
•
Front (OSD)