Holiday Navigator 2003 Owner's Manual page 222

Equipment
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OFF
ON
ULTRA-GAIN
TV AMPLIFIER TV AMPLIFIER
BRAUND MFG. co. BRAUND MFG. co.
030752
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Antenna Booster Operating Instructions:
• The antenna booster is located in the cabinet above the driver's
seat, to the left.
• The power supply switch must be on.
• The green light will glow when the amplifier is on.
To Troubleshoot TV Reception With Amplifier Installed:
• Check the domestic battery for correct voltage. The antenna booster
receives power from the domestic fuse block inside the coach.
• Check the fuse from the grey wire.
• If there is no picture, or the picture is weak, be sure the antenna is
working. If it is working and the picture is weak, an amplifier may
not improve the signal.
• Check for 12 Volt DC and correct polarity on the input lines.
Make sure the coax fitting and center wire are making contact at
the antenna and the amplifier.
Troubleshooting the Coax Wire:
Weak or no picture can indicate a possible shorted or open coax. The coax
cable is made of two conductors. A center conductor which is usually copper
and the ground which is woven or braided aluminum. The "die-electric" insulating
material separates the two conductors. The ground and center conductors are to
remain electrically separate from one another. When installing a metal end
onto a coax cable, use care so none of the woven ground strands comes in
contact with the center conductor. A continuity tester is required to test a
suspected fault in a coax wire. Unscrew both ends of the suspected bad coax
run, with the continuity tester check between the center conductor and the
outside threaded ring. If continuity is present, the coax is shorted. To test for
an open connection of a particular coax run use one test lead and touch the
threaded end of the coax. With the other test lead, touch the threaded ring at
the opposite end. Continuity should be present. Perform the same test procedure
on the center conductor. Proper electrical coax operation should indicate
continuity from the center conductor at one end to center conductor at other
end. Continuity should be present between each coax terminal end. There
should be no continuity between the terminal end and center conductor.
Though damage does not usually occur from a shorted or open coax cable,
picture quality is compromised.
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