Tait TM8100 mobiles, Руководство по обслуживанию

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TM8100/TM8200 Service Manual General Information 107
© Tait Electronics Limited November 2007
4 General Information
This chapter describes techniques and processes, and provides other
information that will enable you top service the radio correctly. It includes
the following sections:
■
Repair Levels, Accreditation, and Website Access
■
Tools, Equipment and Spares
■
Servicing Precautions
■
Setting up the Test Equipment
■
Replacing Board Components
■
Shielding Cans and Connectors
■
SMT Repair Techniques
■
Computer-Controlled Test Mode (CCTM)
■
Defining Frequency Bands
■
Visual and Audible Indications
4.1 Repair Levels, Accreditation, and Website Access
4.1.1 Repair Levels
This manual covers level-1 and level-2 repairs of the radios.
Important
The circuit boards in the radio are complex and must be
serviced only by an Accredited Service Centre (ASC). See
“Accreditation of Service Centres” on page 108. If you
attempt a repair without the necessary equipment, tools, or
training, you could permanently damage the radio.
Level 1
Requirements
Level-1 repairs comprise the replacement of control-head boards, main-
board assemblies, and other parts of the radio, including non-SMT
components such as connectors and volume-control potentiometer on the
control-head board
For level-1 repairs basic electronic repair skills are sufficient.
You require:
■
standard service centre tools and equipment
■
special drivers and bits, see page 110
■
a TM8100/TM8200 service kit, see page 111
■
a spare control head (for diagnostic purposes)