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Maintenance
Introduction
This chapter provides details about the following:
•
Preventive maintenance (inspection and cleaning)
•
Safe handling of CMOS and LDMOS devices
•
Pre-baking of Integrated Circuits
•
Repair procedures and techniques
•
Disassembly and reassembly of the terminal
•
Exploded views and parts lists
Preventive Maintenance
The terminals do not require a scheduled preventive maintenance program; however, periodic visual
inspection and cleaning is recommended.
Inspection
Check that the external surfaces of the terminal are clean, and that all external controls and
switches are functional. It is not recommended to inspect the interior electronic circuitry.
Cleaning
The following procedures describe the recommended cleaning agents and methods to be used
when cleaning the external and internal surfaces of the terminal. External surfaces should be
cleaned whenever a periodic visual inspection reveals the presence of smudges, compound, or
grime. Internal surfaces (circuit boards and components) should be cleaned only when the terminal
is disassembled for servicing or repair.
The only recommended agent for cleaning external terminal surfaces is a 0.5% solution (one
teaspoon of detergent per gallon of water) of mild dishwashing detergent in water. The internal
surfaces should be cleaned only with isopropyl alcohol (100% by volume).
NOTE:
Internal surfaces should be cleaned only when the terminal is disassembled for
service or repair.
CHAPTER 6
MAINTENANCE
6 - 1
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