Replacement Of Faulty Main-Board Assembly - Tait TM8000 Series Service Manual

8.3

Replacement of Faulty Main-board Assembly

Replace Assembly
Calibrate and
Program Radio
Test Main-board
Assembly
TM8100 Mobile Radio Service Manual
May 2004 © Tait Electronics Limited
A faulty main-board assembly requires replacement in any of these
situations:
only level-1 repairs permitted
fault on board not located
repair of fault failed
required repair is level-3 repair
If not already done, remove the faulty main-board assembly from the
chassis as described in
replacement assembly. The product codes for spare main-board
assemblies are listed in
the replacement assembly in the chassis as described in
(on page 144).
Connect the radio to the test equipment. Calibrate and program the
replacement main-board assembly in the same way as the faulty assembly.
Use the files downloaded as described in Tasks 2 and 4 of
(on page 109). If a file could not be downloaded, use the default file.
Carry out the basic tests given in
replacement main-board assembly functions as required. If there is no
fault, re-assemble the radio as described in
Subsection 6.5 (on page
below. If the tests do not confirm the proper functioning of the radio,
the repair failed; remove the spare assembly, re-assemble the radio with
the original assembly, and return to
Subsection 6.3 (on page
Table 4.4 of Subsection 4.2 (on page
Subsection 5.2
Subsection 6.4
148), and conclude with the task discussed
Subsection
Servicing of Main Board
137). Obtain a
84). Install
Subsection 6.4
Subsection 5.2
to confirm that the
and
5.2.
169