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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: thermal fault, low battery
voltage fault, overload and short circuit.
Problem
Possible Solution
If a fault condition exists
A. Disconnect the USB-powered
in either of the USB
ports, the LCD will
display the USB fault
condition and the USB
B. Allow the unit to cool down for
power/fault indicators
shut off. In any of these
cases, the USB ports will
C. If a fault occurs again, make sure
automatically shut down.
Should this occur:
D. If an individual USB device is
device and press the power
button again to turn off the unit
immediately.
several minutes before attempting
to use the USB ports again.
that the total draw of all USB
devices plugged into the USB
ports does not exceed 3.1A.
within 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
14
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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