Preh mc 15 Guía Del Usuario
16 3.2005
6.3 Troubleshooting list
A lot of malfunctions can be traced back to incorrect or loose cable connection. So
please make sure that all plug connections are correct and secured.
Fault Possible
cause
Remark
voltage supply not in
order
order
check plug-in connection of
power supply
power supply
LED on Touch Commander
remains dark
remains dark
computer switched off
switch on the computer
LED on Touch Commander
lights up red and no picture
appears
lights up red and no picture
appears
VGA cable is not
correctly connected
correctly connected
check cable connection of
VGA connection
VGA connection
choice of display
resolution is wrong
resolution is wrong
check for correct display
resolution it should be
1024x768 or less
resolution it should be
1024x768 or less
The display shows only
part of the picture or the
picture is distorted
part of the picture or the
picture is distorted
display adjustment
insufficient
insufficient
see notice to adjustment of in
chapter 3.3
chapter 3.3
LCD shows indistinct
vertical stripes
vertical stripes
display ("HORIZONTAL
SIZE") is insufficiently
set
SIZE") is insufficiently
set
set horizontal size of picture
in menu IMAGE POSITION of
OSD(see chapter 3.3.1)
in menu IMAGE POSITION of
OSD(see chapter 3.3.1)
LCD shows fine horizontal
stripes
stripes
display ("PHASE") is not
correctly adjusted
correctly adjusted
adjust PHASE in menu
BASIC-SETTINGS of OSD
(see chapter 3.3.1)
BASIC-SETTINGS of OSD
(see chapter 3.3.1)
Touch cannot be calibrated
under the operating
systems of Windows,
button "calibrate" is
deactivated
under the operating
systems of Windows,
button "calibrate" is
deactivated
cable connection
incorrect
incorrect
check serial connection,
restart computer
restart computer
Vertical streaks in LCD
image
image
Display “Clock” or
“Horizontal Position”
improperly set
“Horizontal Position”
improperly set
Set horizontal position and
size of picture in menu “H-
Position”and “Clock” of OSD
(see chapter 3.3.1)
size of picture in menu “H-
Position”and “Clock” of OSD
(see chapter 3.3.1)
Calibrating program
notifies error when called
up
notifies error when called
up
touchscreen driver not
correctly installed
correctly installed
Set the driver again with
SETUP or with button setup
in the calibrating program.
Here the serial connection
should be correctly entered
and the correct controller
should be selected. Check
the serial cable connection
SETUP or with button setup
in the calibrating program.
Here the serial connection
should be correctly entered
and the correct controller
should be selected. Check
the serial cable connection
OSD menu can not be
accessed
accessed
Key lock is activated
Deactivate Key lock (see
chapter 3.3.2)
chapter 3.3.2)