Tait TM8000 Series, Руководство по обслуживанию

Страница: 107 / 244

TM8100 Mobile Radio Service Manual Servicing Procedure 107
May 2004 © Tait Electronics Limited
5 Servicing Procedure
Scope of Section
This section gives the full sequence of tasks required when servicing a
particular radio. These tasks are:
■
initial inspection
■
fault diagnosis and repair
■
final inspection, test and administration
The tasks are described in Subsection 5.1 to Subsection 5.3 respectively.
Where more details are required regarding disassembly and re-assembly
procedures, references are given to
Section 6 (on page 125) . For the
servicing of the control head and main board, references are given to
Section 7 (on page 151) and Section 8 (on page 165) respectively.
5.1 Initial Inspection
Introduction
When a radio is received for repair, details of the Customer and the fault
will be recorded in a fault database. The fault reported by the Customer
might concern damage to or loss of a mechanical part, or the failure of a
function of the radio, or both. Whatever the case, first check the radio
for mechanical loss or damage. This is advisable even if the fault
concerns a function failure only. Inspect the radio as follows:
Check for Minor
Damage or Loss
Check for damage or loss of parts that can be replaced without
disassembling the radio. These parts are:
■
knob for volume-control potentiometer
■
microphone grommet
■
rubber seal for RF connector
■
bung for auxiliary connector
■
bung for aperture for external options connector
The last-named part should be replaced by a cover seal if an external
options connector is present. All the parts are illustrated in
Subsection 2.1 (on page 33) . Except for the microphone grommet, if
any of these parts is missing or damaged, replace it as described below.
In the case of the microphone grommet, refer to the accessories manual
for the repair procedure.
Replace Damaged
or Missing Knob
Remove the volume-control knob if it is damaged. Obtain a
replacement knob from Spares kit 1 or 10. The contents of the kit are
listed in
Table 6.1 of Section 6 (on page 125) . Push the replacement
knob onto the shaft of the volume-control potentiometer. Ensure that
the knob turns freely.