Troubleshooting - Mitsubishi Diamond Scan 90E User Manual

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TROUBLESHOOTING

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 SPECIFICATION 6 and APPENDIX 7.
PROBLEM
LED
On-Green
LED
Off
No
picture
LED
On-Amber
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 disconnected.
•
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 is disagreement.
CGA MODE is not available.
MDA MODE is not available.
EGA MODE is not available.
• BNC cables are misconnected.
(Green and composite sync. connection is
reversed)
•
Adjust H.SIZE, V.SIZE, H.PHASE, and
V.POSITION with non-standard signals
• Monitor may not be able to get full-screen image
depend on signal. In this case, please select other
resolution, or other vertical refresh timing.
• Make sure you wait a few seconds after adjusting
the size of the image before changing or discon-
necting the signal or powering OFF the monitor.
• BNC cables are misconnected.
•
Input video signal level select is not at the
appropriate position for your graphics adapter
output.(0.7V or 1.0Vp-p)
24
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 manage-
ment function. (see P23)
•
Rear
•
Check the specification of
graphics adapter and
monitor
•
Rear
•
Front (OSD)
•
Front (OSD)
•
Rear
•
Front (OSD)