Motorola C1002 Instructions d'exploitation télécharger pdf (Page 18)

2-2 Preventive Maintenance

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

or crevices.

Cleaning Internal Circuit Boards and Components

Isopropyl alcohol (100%) may be applied 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 the 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 this could cause the liquid to collect in unwanted places. After completing of the cleaning

process, use a soft, absorbent, lintless cloth to dry the area. Do not brush or apply any isopropyl

alcohol to the frame, front cover or back cover.

2.3 Safe Handling of CMOS and LDMOS Devices

Complementary metal-oxide semiconductor (CMOS) devices are used in this family of radios, and

are susceptible to damage by electrostatic or high voltage charges. Damage can be latent, resulting

in failures occurring weeks or months later. Therefore, special precautions must be taken to prevent

device damage during disassembly, troubleshooting, and repair.

Handling precautions are mandatory for CMOS circuits and are especially important in low humidity

conditions.

NOTE

Always use a fresh supply of alcohol and a clean container to prevent contamination by

dissolved material (from previous usage).

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Motorola C1002 Instructions d'exploitation Page 18