Acnodes KD 5154 - Manual (Page 22)

Setup and Operating Guide
18
Troubleshooting Techniques
LCD screen shows garbage or bad characters or
vertical/horizontal color lines or bar:
ü Detach the video connection to the LCD screen and
attach to a good external CRT type monitor.
If the
external CRT monitor shows normal video then it could
be compatibility issue. Replace the VGA card and use a
different VGA card and try it again with the LCD screen.
If it still failed then it could be a bad conversion board or
loose cable inside the LCD subassembly.
ü If the external CRT monitor shows similar garbage
character then it is a bad video card.
LCD SCREEN works fine in Windows but acted
funny when running certain programs or games:
ü The built-in Intelligent Analog-Digital conversion board
(AD board) should adjust the screen to the proper
resolution to fill the entire display. However, certain
programs or display modes might cause the AD board
to not align or sync properly. Check if the program that
you are running is running under supported resolution.
You can also try adjusting the OSD to manually adjust
the resolution ( see Section 6 on Using The Systems
Controls ).
When switching display modes the screen position
becomes offset by a few pixels to the top/bottom or
left/right in the display area
ü This can be corrected by pressing “MENU” > “GEOM-
ETRY MENU” > “AUTO PHASE” > and then press
“MENU” > “SAVE”. Next time you switch to this mode
the correct screen position will be recalled.