TM9100 Service Manual General Information 97
© Tait Electronics Limited August 2005
4 General Information
Scope of Section This section discusses the two repair levels covered by the service manual,
details concerning website access, the tools, equipment and spares
required, and the setting up of the necessary test equipment. General
servicing precautions are also given, as well as details of certain non-
standard SMT techniques required for level-2 repairs.
4.1 Repair Levels and Website Access
Repair Levels This manual covers level-1 and level-2 repairs of TM9100 radios. Level-
1 repairs comprise the replacement of control-head boards, main-board
assemblies, and other parts of the radio; level-2 repairs comprise repairs
of control-head boards and, except for special items, main-board
assemblies. The special items are:
■ digital board
■ RF PAs (Q309 and Q310)
■ CODEC 1 (IC204)
■ copper plate
Replacements of the connectors and volume-control potentiometer on
the control-head board are level-1 repairs. Replacements of the
connectors on the main-board assembly, however, are level-2 repairs
because these repairs entail the disassembly of the main-board assembly.
Important The circuit boards in the TM9100 radio are complex.
They should be serviced only by accredited service
centers (ASC). Repairs attempted without the necessary
equipment and tools or by untrained personnel might
result in permanent damage to the radio.
Accreditation of
Service Centers
Service centers that wish to achieve ASC status should contact Technical
Support. They will need to provide evidence that they meet the criteria
required for accreditation; Technical Support will supply details of these
criteria. These centers must then make available suitable staff for training
by TEL personnel, allow their service facilities to be assessed, and provide
adequate documentation of their processes. They will be accorded ASC
status and endorsed for repairs of TM9100 radios after their staff have
been trained and their facilities confirmed as suitable. Existing ASCs
need to apply for and be granted an endorsement for repairs of TM9100
radios. All ASCs with the necessary endorsements may carry out level-1
and level-2 repairs of these radios, whether under warranty or not.
Skills and Resources
for Level-1 Repairs
For level-1 repairs basic electronic repair skills are sufficient. Apart from
the standard tools and equipment of any service center, certain torque
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