Chapter 1: 2-1
6881091C63-A
Section 2
MAINTENANCE
1.0 Introduction
This chapter of the manual describes:
• preventive maintenance
• safe handling of CMOS devices
• repair procedures and techniques
2.0 Preventive Maintenance
The radios do not require a scheduled preventive maintenance program; however, periodic visual
inspection and cleaning is recommended.
2.1 Inspection
Check that the external surfaces of the radio are clean, and that all external controls and switches
are functional. We recommend against inspecting the interior electronic circuitry.
2.2 Cleaning
The following procedures describe the recommended cleaning agents and the methods to be used
when cleaning the external and internal surfaces of the radio. External surfaces include the front
cover, housing assembly, and battery case. These surfaces should be cleaned whenever a periodic
visual inspection reveals the presence of smudges, grease, and/or grime.
2.2.1 Cleaning External Plastic Surfaces
The only recommended agent for cleaning the external radio surfaces is a 0.5% solution of a mild
dishwashing detergent in water. Apply this solution sparingly on the surface with a stiff, non-metallic,
short-bristled brush to work all loose dirt out. Use a soft, absorbent, lintless cloth or tissue to remove
the solution. Then dry the radio. Make sure that no water remains entrapped near the connectors,
cracks, or crevices.
The effects of certain chemicals and their vapors can have harmful results on certain
plastics. Do not use aerosol sprays, tuner cleaners, and other chemicals to clean the
radio.
NOTE
Internal surfaces should be cleaned only when the radio is disassembled for servicing or
repair.
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C a u t i o n
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