3. MAINTENANCE, TROUBLE SHOOTING
22
3.1
Maintenance
Regular maintenance is important for good performance. Check the points mentioned
below every 3 to 6 months to keep the antenna unit in good working order.
Check
point
Action
Remedy, remarks
Check points every 3 to 6 months
Cable
Check that all cables are firmly
connected and are not damaged.
• Connect a cable if it has loosened.
• Replace damaged cables.
Exposed
bolts and
nuts
Check that bolts and nuts are not
corroded and are securely fas-
tened.
• Replace corroded bolts.
• Tighten loosened bolts.
• Coat new bolts with adhesive.
Adhesive
on the
bolts, nuts
and cable
clamps
Check that adhesive has not fall-
en off or cracked.
• Deteriorated adhesive may cause
water leakage into the unit or corro-
sion of the bolts, nuts and cable
clamps.
• If the adhesive is fallen off or
cracked, apply adhesive to cover
the spot.
• If the adhesive is severely deterio-
rated, peel off the adhesive and ap-
ply the adhesive again on the spot.
Radiator
Dust, dirt and salt deposits on
the radiator cause signal attenu-
ation, resulting in loss of sensitiv-
ity.
• Wipe radiator with a freshwater-
moistened cloth.
• The radiator is made of AES (Acry-
lonitrile-Ethylene-Styrene) resin.
Therefore, do not used gasoline,
benzene and the like to clean the ra-
diator.
• If the radiator is iced, use a wooden
or plastic headed hammer to re-
move the ice. DO NOT use a steel
hammer.
Ground
connection
Check for tight connection and
rust.
• Fasten if loosened.
• Remove rust if present.
Check points every year
Check the scanner unit for rust,
corrosion and chipped paint.
• If the scanner unit has rusted or the
paint has chipped, paint the affected
area of the scanner unit.
• Do not paint the antenna (see figure
below). Paint on the antenna can
cause loss of sensitivity and crack
the antenna.
: Do NOT paint.
: Painting area