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MN007773A01-AC
Chapter 3 : Maintenance
Chapter 3
Maintenance
3.1
Preventive Maintenance
Periodic visual inspection and cleaning are recommended.
Inspection
Check that the external surfaces of your radio are clean, and that all external controls and switches are
functional. It is not recommended to inspect the interior electronic circuitry.
Cleaning Procedures
The following procedures describe the recommended cleaning agents and the methods to clean the
external and internal surfaces of your radio.
External surfaces include the front cover, housing assembly, and battery. These surfaces should be
cleaned whenever a periodic visual inspection reveals the presence of smudges, grease, and/or grime.
CAUTION: Use all chemicals as prescribed by the manufacturer. Follow all safety precautions
as defined on the label or material safety data sheet.
The effects of certain chemicals and their vapors can have harmful results on certain plastics.
Avoid using aerosol sprays, tuner cleaners, and other chemicals.
NOTE:
Only clean internal surfaces when your radio is disassembled for service or repair.
Cleaning External Plastic Surfaces
IMPORTANT: The only recommended agent for cleaning the external radio surfaces is a 0.5%
solution of a mild dish-washing detergent in water.
Apply the 0.5% detergent-water solution sparingly with a stiff, non-metallic, short-bristled brush to work
all loose dirt away from your radio. Use a soft, absorbent, lint-less cloth, or tissue to remove the
solution and dry your radio. Make sure that no water remains entrapped near the connectors, cracks,
or crevices.
Cleaning Internal Circuit Boards and Components
IMPORTANT:
The only factory recommended liquid for cleaning the printed circuit boards and their
components is isopropyl alcohol (100% by volume).
Always use fresh supply of alcohol and a clean container to prevent contamination by
dissolved material (from previous usage).
Apply Isopropyl alcohol (100%) with a stiff, non-metallic, short-bristled brush to dislodge embedded or
caked materials located in hard-to-reach areas. The brush stroke should direct the dislodged material
out and away from the inside of your radio. Make sure that controls or tunable components are not
soaked with alcohol. Do not use high-pressure air to hasten the drying process since it can cause the
liquid to collect in unwanted places. After completing of the cleaning process, use a soft, absorbent,
lint-less cloth to dry the area. Do not brush or apply any isopropyl alcohol to the frame, front cover, or
back cover.
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