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Specific USB Power Port Problems
When the USB ports are in use, the unit will monitor for the following
USB fault conditions on all the USB ports: low battery voltage fault,
overload and short circuit.
Problem
Possible Solution
If a fault condition exists
A. Disconnect the USB-powered device
in either of the USB
ports, the USB ports will
automatically shut down.
B. Allow the unit to cool down for several
Should this occur:
C. Make sure that the USB device plugged
D. The voltage of the DeWALT® 20V
E. The DeWALT® 20V Battery Pack may
F.
G. If an individual USB device is within
and press and hold the power button
for one second again to turn off the unit
immediately.
minutes before attempting to use the
USB ports again.
into the USB-A port does not exceed
15W; the USB device plugged into
USB-C port does not exceed PD 25W;
or the total drained power of the USB-A
port and USB-C port do not exceed
15W when they are used simultaneously.
Battery Pack may be low. Recharge if
necessary.
be overheated or is too cold. Allow the
Battery Pack to cool down or warm up
for several minutes.
Some USB-powered household
electronics will not operate with this USB
charging/power Port. Check the manual
of the corresponding electronic device to
confirm that it can be used with this type
of USB charging/power Port.
specifications and the fault occurs, have
the USB device checked for malfunction
and do not continue to use it with these
USB ports.
Common Audio Problems
Problem
Buzzing Sound In
Audio Systems
Television
Interference
22
Possible Solution
Some inexpensive stereo systems and
boom boxes make a buzzing sound
when operated from the inverter,
because the power supply in the
electronic device does not properly filter
the modified sine wave produced by the
inverter. The only solution to this problem
is to use a sound system that has a
higher quality power supply.
The inverter is shielded to minimize
interference with TV signals. However,
in some instances, some interference
may still be visible, especially when the
TV signal is weak. Try the following to
improve the picture:
1. Move the inverter as far away
as possible from the TV set, the
antenna, and the antenna cables.
Use a short AC extension cord, if
necessary.
2. Adjust the orientation of the antenna
cables, and the TV power cord to
minimize interference.
3. Make sure that the antenna feeding
the TV provides an adequate (snow-
free) signal and that high quality,
shielded antenna cable is used.
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