Schumacher 71495 5SEARS - Manual (Page 9)

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OPERATING INSTRUCTIONS
1. Connect the inverter (see Connecting Inverter Cables section).
2. Press and hold the ON/OFF switch to turn the inverter on. (The internal
speaker will make a brief “beep”. This is normal.)
3. The digital display turns on.
4. Make sure the device to be operated is turned OFF.
5. Plug the device into the inverter AC outlet.
6. Turn the inverter on. The output wattage LED will glow and the digital display
will show O.
7. Turn the device on. The display will now show the total wattage used by the
device. To change the digital display, press the ON/OFF switch.
8. To disconnect, reverse the above procedure.
9. Press and hold the ON/OFF switch to turn the inverter off.
NOTE: If more than one device is to be powered, start one device at a time to
avoid a power surge and overloading the inverter. The surge load of each device
should not exceed the inverter’s Continuous Operation wattage rate.
CAUTION: If there is a short circuit or power surge in the device,  will display
and the alarm will sound. Press the ON/OFF switch to turn off the alarm. If the 
displays after several attempts, there is a short circuit or the device requires more
“starting” or “peak” load than the inverter is capable of providing.
USING THE INVERTER TO OPERATE A TV OR AUDIO DEVICE:
The inverter is shielded and filtered to minimize signal interference. Despite
this, some interference may occur with your television picture, especially with
weak signals. Below are some suggestions to try and improve reception.
1. Try altering the position of the inverter, antenna cables, and television
power cord. Add an extension cord from the inverter to the TV so as to
isolate its power cord and antenna cables from the 12 volt power source.
2. Try coiling the television power cord and the input cables running from the
12V power source to the inverter.
3. Affix one or several “Ferrite Data Line Filters” to the television power cord.
Ferrite Data Line Filters can be purchased at most electronic supply stores.
NOTE: You may hear a “buzzing” sound being emitted from inexpensive
sound systems when operated with the inverter. This is due to ineffective filters
in the sound system’s power supply. Unfortunately, this problem can only be
resolved by purchasing a sound system with a higher quality power supply or
higher quality filter.