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recharged. The user should stop operation of the electronic device at this
time since the inverter will shut down automatically shortly thereafter, when
the battery voltage drops to 10 volts. Start your engine to recharge the
battery.
If the low voltage alarm sounds when the battery is fully charged, follow
the steps for solving lack of output power in the Troubleshooting Guide. The
alarm will sound when the inverter is overloaded, in thermal shutdown, or
if there is an excessive voltage drop between the battery and inverter.
NOTE: It is normal for the alarm to sound while the unit is being connected
to, or disconnected from, the power source. This is not indicative of a
problem.
7. COMMON PROBLEMS
“BUZZING” SOUND IN AUDIO SYSTEMS:
Some inexpensive stereo systems and “boom boxes” emit a buzzing sound
from their speakers when operated from the MAXX 400 SST power
inverter. This occurs because the power supply in the electronic device does
not adequately filter the modified sine wave produced by the inverter. The
only solution to this problem is to use a higher quality sound system that
incorporates a higher quality power amplified supply.
TELEVISION INTERFERENCE:
The Vector MAXX 400 SST is shielded to minimize interference with TV
signals. However, in some instances, some interference may still be visible,
particularly with weak TV signals. Try the following corrective measures:
• Position the inverter as far as possible from the television, the antenna
and the antenna cables. Use an extension cable, if necessary.
• Adjust the orientation of the inverter, the antenna cables and the TV
power cord to minimize interference.
• Make sure that the antenna feeding the television provides an
adequate (“snow free”) signal and that high quality, shielded antenna
cable is used.