Power Source; Led Indicator And Shutdown Protection - Schumacher Electric PC-1000 Owner's Manual

1. Try altering the position of the converter,
antenna cables, and television power
cord. Add an extension cord from the
converter to the TV, 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
12 volt power source to the converter.
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.
4. Try grounding the converter with a 16
AWG (minimum) wire, using as short
of an extension length as possible.
NOTE: You may hear a "buzzing"
sound being emitted from inexpensive

10. POWER SOURCE

Your average automobile battery at full
charge will provide an ample power supply
to the converter when the engine is on.
Keep the car running at all times when
using the converter. The actual length of
time the converter will function depends on
the age and condition of the battery and the
power demand being placed by the device
being operated with the converter.
When possible, recharge your batteries
when they are not more than 50%
discharged. This gives the batteries a
much longer life cycle than recharging
when they are more deeply discharged.

11. LED INDICATOR AND SHUTDOWN PROTECTION

The Green LED lights automatically when
then converter is plugged into a 12 volt
DC power source and is turned on. The
Red LED lights, the alarm sounds and
the converter automatically turns itself off
under the following conditions:
1. When the power input from the
vehicle's battery drops to approximately
10.5 volts, the low voltage alarm will
sound. When the voltage goes down
below 10 VDC, the converter shuts off.
Recharge or replace the battery.
2. When the power input from the
vehicle's battery exceeds 16 volts, high
voltage overload protection occurs.
sound systems when operated with the
converter. 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.
USING THE USB PORT(S)
The USB port provides up to 2A at 5V DC.
Model PC-1000 includes one port.
Model PC-1500 includes two ports.
1. Plug the device into the USB port.
2. Turn the USB device on.
3. Reverse these steps when finished
using the USB port.
WARNING: The converter draws power,
even when the switch is OFF. To avoid
battery drain, disconnect the converter
when not in use.
The power converter has a battery low
voltage shutdown at 10V±0.5V DC. With
moderate to heavy loads, this will protect
against over-discharging the battery. If the
converter is running only light loads it is
advisable to recharge before the converter
low voltage shutdown point is reached.
IMPORTANT: The converter draws low
amperage from the battery with the main
ON/OFF switch turned on and no load
connected. To prevent battery discharge,
turn the converter off when you are not
using it.
3. The continuous load demand from the
equipment or device being operated
exceeds the continuous load rating of
the converter. Use a higher capacity
converter or lower rated device.
4. The thermal resistor exceeds
80° C (176° F.) Allow the converter to
cool. Do not block the cooling slots or
air flow over and through the converter.
Reduce the load on the converter to
the continuous rated output.
RESET: To reset after shutdown occurs,
switch the converter's ON/OFF switch to the
OFF (O) position. Check the source of the
problem and correct. Switch the converter's
ON/OFF switch to the ON (I) position.
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