134 Servicing Procedures TP9100 Service Manual
© Tait Electronics Limited May 2005
radio still fails to receive, reconnect the original speaker and go to
Step 11.
11. Use CCTM command 804 to read the status of the volume
potentiometer. The value returned should vary as the volume control
is rotated.
12. If the volume potentiometer is faulty, repair it as described in
“Volume Control Faulty” on page 142. 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 ault Finding” on
page 269.
14. If the main board was replaced or if the repair failed, re-assemble the
radio as described in “Reassembling the Radio” on page 112.
Conclude with the tasks of “Final Tasks” on page 134.
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. 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 has been replaced, certain software features may
need to be enabled before the programming file can be loaded. See
Task 2 on page 135.
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