Maintenance
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Maintenance
Minimal maintenance is required to keep your HI400
operating properly.
Periodically you should
• clean the exterior of the unit with a damp cloth to prevent
the accumulation of dust and dirt.
• ensure the DC cables are secure at both the HI400 and the
battery.
Troubleshooting

Common problems

Buzz in audio equipment

Some inexpensive stereo systems have inadequate internal
power supply filtering and buzz slightly when powered by
the HI400. The best solution is to use an audio system with a
good quality filter.

Television interference

The HI400 is shielded to minimize interfe rence with TV
signals. If TV signals are weak, you may see interference in
the form of lines scrolling across the screen. Try one of these
suggestions to minimize or eliminate the problem:
• Use an extension cord to increase the distance between
the HI400 and the TV, antenna, and cables.
WARNING: Shock hazard
Disconnect all sources of AC and DC power before
doing any routine maintenance.