Tait TM8235, Руководство по обслуживанию

Страница: 157 / 578

TM8100/TM8200 Service Manual Servicing Procedures 157
© Tait Electronics Limited June 2006
12. If the volume potentiometer is faulty, repair it as described in
“Volume Control Faulty” on page 424 (graphical display) or
“Volume Control Faulty” on page 436 (1-, 2- or 3-digit display).
If it is not faulty, go to Step 13 .
13. After having eliminated the synthesizer, the receiver circuitry, the
speaker, and the volume potentiometer as cause for the fault, repair
the radio as described in
“CODEC and Audio Fault Finding” on
page 381 .
14. If the main-board assembly was replaced or if the repair failed, re-
assemble the radio as described in
“Disassembly and Reassembly” on
page 129 . Conclude with the tasks of “Final Tasks” on page 157 .
6.2 Final Tasks
List of Tasks
The following tasks need to be carried out for all radios:
■
repair
■
enable software features (if applicable)
■
final inspection
■
final test
■
final administration.
Task 1 —
Repair
The fault diagnosis will have resulted in the repair or replacement of the
main-board assembly. This section describes the steps after completion of
the fault diagnosis:
1. Use the programming and calibration applications to load the pro-
gramming and calibration files read or set-up in
“Initial Tasks” .
Note
If the radio had to be reprogrammed with a default programming
file, the following additional actions are required: If the radio is to
be returned direct to a Customer who has
no programming facil-
ities, the appropriate programming file needs to be obtained and
uploaded (or the data obtained to create the file). If the radio is to
be returned to a Dealer or direct to a Customer who does have
programming facilities, the Dealer or Customer respectively need
to be informed so that they can program the radio appropriately.
Note
If the main-board assembly has been replaced, certain software
features may need to be enabled before the programming file can
be loaded. See
Task 2 on page 158 .
2. Test the radio as described in “Final Test” on page 159 .
It may be necessary to also re-calibrate to make the radio functional,
in particular if the main-board assembly had to be replaced or if a
default calibration file had to be loaded. Refer to the online help of
the calibration application.