DualTouch™ Technology Touchpanel
Crestron
DTT-17
Problem Solving
Troubleshooting
The following table provides corrective action for possible trouble situations. If
further assistance is required, please contact a Crestron customer service
representative.
DTT-17 Troubleshooting
TROUBLE
POSSIBLE
CAUSE(S)
CORRECTIVE ACTION
The DTT-17 is not
receiving power. The
Power LED is off.
Verify cable connections and power to
unit.
DTT-17 does not
function.
The DTT-17 is
receiving power. The
Power LED is on.
Check contrast, brightness and back-
light controls. Refer to page 11 and 13.
Multiple images
displayed.
The video cable is
over-extended.
Use the video cable without extensions
or use a higher quality cable.
White color appears off-
white.
The colors are not set
up correctly.
Return to factory settings or adjust the
colors as necessary.
VGA display ripples or
shows a moiré pattern.
The pitch and/or
phase are
misadjusted.
Adjust pitch and/or phase. Refer to
The system may be in
power management
mode.
Touch the pen tip to the screen, move
the mouse connected to the UPX-2, or
press any key on the keyboard
connected to the UPX-2.
The message:
”NO SIGNAL
GO TO POWER SAVE”
is displayed. (Power LED
may be orange instead
of blue)
The video cable
connection may be
loose or broken.
Check the video cable connection.
The message:
”CABLE DISCONNECT
GO TO POWER SAVE”
is displayed. (Power LED
may be orange instead
of blue)
The video cable
connection may be
loose or broken.
Check the video cable connection.
Input signal frequency
is incorrect or not
compatible.
Vertical frequency refresh rate is a
value between 50 and 75 Hz (for XGA,
vertical refresh rate is 45 to 70 Hz).
The message:
”OUT OF RANGE”
is displayed.
The resolution is set
too high.
Set the resolution to a maximum of
1280 x 1024.
The message:
”Please set the refresh
rate at 70Hz or less”
is displayed.
The refresh rate is set
too high for XGA.
Set the refresh rate for XGA to a value
between 45 and 70 Hz.
Screen goes completely
blank after setting
refresh rate.
Wrong refresh rate.
Use only the following screen
resolutions at UPX-2 RGB Output A:
800 x 600, 1024 x 768, and
1280 x 1024.
It may be necessary to unplug the unit
and completely reset the touchpanel.
Operations Guide – DOC. 6343
DualTouch™ Technology Touchpanel: DTT-17
y
17
