Troubleshooting - Mitsubishi Diamond Plus 120U 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.
•
BNC cables are misconnected or the green cable is discon-
LED On
nected.
(Amber)
• Computer power switch.
•
Power management function is active.
The following message appeared.
•
Signal cable disconnected.
•
ATTENTION ATTENTION BNC cables are misconnected or the green cable is discon-
NO SIGNAL NO SIGNAL
nected.
H H OFF V OFF V OFF OFF
PLEASE PLEASE CHECK CHECK •
Computer power switch.
INPUT INPUT SIGNAL SIGNAL OR OR
CONNECTION. CONNECTION.
•
Power management function is active.
The following message appeared.
•
Input signal frequency range is disagreement.
ATTENTION ATTENTION
SIGNAL FREQUENCY SIGNAL FREQUENCY
IS OUT OF RANGE. IS OUT OF RANGE.
FH FH 24.8KHz 24.8KHz FV 43.0Hz FV 43.0Hz
PLEASE CHANGE PLEASE CHANGE
SIGNAL TIMING. SIGNAL TIMING.
•
Perform "GEOMETRY-RESET" or "ALL RESET" for a standard signal.
•
Adjust H-SIZE, V-SIZE, H-PHASE, and V-POSITION with
Display is miss- 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.
•
"VIDEO LEVEL" is not at the appropriate position for your
Display is dark or
graphics adapter output.(0.7V or 1.0Vp-p)
too bright
•
[Universal serial bus controller] is not listed in [Device
Manager].
• [Generic USB HUB] is not listed in [Device Manager].
No operation of
the USB devices
•
On the OSD screen, the Upstream port to which the
USB device you want to use is connected is not
colored by blue.
ITEMS TO CHECK
CGA MODE is not available.
MDA MODE is not available.
EGA MODE is not available.
- 19 -
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 6. SPECIFICATIONS and
7. APPENDIX.
•
Front
(Adjust to the maximum bright-
ness or push the reset button)
•
Front
•
Rear
•
Rear
•
Check the graphics adapter and cables
•
Computer
•
Press any key on the keyboard
or move the mouse
•
Rear
•
Check the graphics adapter and cables
•
Computer
•
Press any key on the keyboard
or move the mouse
•
Check the specification of
graphics adapter and monitor
•
Front (OSD)
•
Front (OSD)
•
Front (OSD)
Confirm that Windows98 is in-
•
stalled into the computer.
• Make sure of the cable con-
nections.
Restart the computer.
•
• Turn off the monitor and then
turn on.
Disconnect all the cables con-
•
nected to theUpstream ports
and re-connect then.
• Select the Upstream port by
using the OSD screen, "Up-
stream port selection"
LOCATION