Advantech DLoG DLT-V72 Series User Manual page 165

Error
Battery pack run time is
significantly shorter than
specified.
No UPS functionality
although battery pack is
plugged in.
Nothing is shown on the
display,
Power LED does not
light up.
Nothing is shown on the
display, Power LED
active.
Nothing is shown on the
display,
Temp LED active.
Touchscreen reacts
imprecisely.
Device cannot be
operated by touch input.
DLT-V72 Series User Manual V2.70
Possible cause(s)
The device may possibly
not be in the temperature
range, which is necessary
for charging the battery
pack.
Maximum number of
charging cycles of the
battery pack has been
reached.
Battery pack is
discharged or deep
discharged.
There is no voltage
present on the device.
Ignition signal missing.
Backlight is switched off.
Brightness to low
Operating temperature
limits
exceeded/undershot.
Touchscreen is switched
off.
Touch driver error
Touchscreen is not
calibrated correctly.
165 / 173
Troubleshooting
Remedy
Check the temperature
specifications for the device
and surroundings.
If temperature causes can be
ruled out, the battery pack has
possibly reached the
maximum number of charging
cycles.
Replace the battery pack. Use
only original battery pack from
Advantech.
Charge the battery pack
properly.
Observe: If the battery pack is
deep discharged, the charging
time can increase by a
multiple.
Check the power switch, plug
connection, power supply
cable and fuse.
Check ignition cable and
signal
Press backlight key ("light
bulb" symbol).
Increase display brightness
with key
Wait until the device has
cooled down resp. warmed
up.
Press touchscreen on/off.
Reinstall the touch driver or
change settings
The touchscreens is already
calibrated at the factory and
therefore and does usually not
need to be recalibrated.
However, the operating
systems Win7Pro, Windows
8.1 Industry and WE8S do
permit recalibration of the
touchscreen via software
(Menu Control Panel ->
Tablet PC Settings).
This resets the sensitivity of
the touchscreen to an