Motorola GP140 Series Manuel d'entretien de base - Page 15

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1.0

This chapter provides details about the following:

Preventive maintenance (inspection and cleaning)

Safe handling of CMOS and LDMOS devices

Disassembly and reassembly of the radio

Repair procedures and techniques

Installation of Option Boards

2.0

The radios do not require a scheduled preventive maintenance program; however, periodic visual

inspection and cleaning is recommended.

2.1

Check that the external surfaces of the radio are clean, and that all external controls and switches

are functional. It is not recommended to inspect the interior electronic circuitry.

2.2

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.

NOTE

Internal surfaces should be cleaned only when the radio is disassembled for service

or repair.

The only recommended agent for cleaning the external radio surfaces is a 0.5% solution of a mild

dishwashing detergent in water. The only factory recommended liquid for cleaning the printed circuit

boards and their components is isopropyl alcohol (70% by volume).

CAUTION: The effects of certain chemicals and their vapors can have harmful results on certain plas-

tics. Avoid using aerosol sprays, tuner cleaners, and other chemicals.

Cleaning External Plastic Surfaces

Apply the 0.5% detergent-water solution sparingly with a stiff, non-metallic, short-bristled brush to

work all loose dirt away from the radio. Use a soft, absorbent, lintless cloth or tissue to remove the

solution and dry the radio. Make sure that no water remains entrapped near the connectors, cracks,

or crevices.

Chapter 3

MAINTENANCE