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DualTouch™ Technology Touchpanel
Problem Solving
Operations Guide – DOC. 6343
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
DTT-17 does not
The DTT-17 is not
function.
receiving power. The
Power LED is off.
The DTT-17 is
receiving power. The
Power LED is on.
Multiple images
The video cable is
displayed.
over-extended.
White color appears off-
The colors are not set
white.
up correctly.
VGA display ripples or
The pitch and/or
shows a moiré pattern.
phase are
misadjusted.
The message:
The system may be in
"NO SIGNAL
power management
GO TO POWER SAVE"
mode.
is displayed. (Power LED
may be orange instead
The video cable
of blue)
connection may be
loose or broken.
The message:
The video cable
"CABLE DISCONNECT
connection may be
GO TO POWER SAVE"
loose or broken.
is displayed. (Power LED
may be orange instead
of blue)
The message:
Input signal frequency
"OUT OF RANGE"
is incorrect or not
is displayed.
compatible.
The resolution is set
too high.
The message:
The refresh rate is set
"Please set the refresh
too high for XGA.
rate at 70Hz or less"
is displayed.
Screen goes completely
Wrong refresh rate.
blank after setting
refresh rate.
POSSIBLE
CORRECTIVE ACTION
CAUSE(S)
Verify cable connections and power to
unit.
Check contrast, brightness and back-
light controls. Refer to page 11 and 13.
Use the video cable without extensions
or use a higher quality cable.
Return to factory settings or adjust the
colors as necessary.
Adjust pitch and/or phase. Refer to
page 11 and 12.
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.
Check the video cable connection.
Check the video cable connection.
Vertical frequency refresh rate is a
value between 50 and 75 Hz (for XGA,
vertical refresh rate is 45 to 70 Hz).
Set the resolution to a maximum of
1280 x 1024.
Set the refresh rate for XGA to a value
between 45 and 70 Hz.
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.
DualTouch™ Technology Touchpanel: DTT-17
Crestron DTT-17
17
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