TM9100 Service Manual Servicing Procedures 139
© Tait Electronics Limited August 2005
6 Servicing Procedures
Scope of Section This section gives the full sequence of tasks required when servicing a
particular radio. These tasks are:
■ initial inspection, visual inspection and fault diagnosis
■ repair, final inspection, test and administration
For disassembly and reassembly instructions, refer to “Disassembly and
Reassembly” on page 123.
6.1 Initial Tasks
List of Tasks The following tasks need to be carried out for all radios:
■ initial administration
■ visual inspection
■ powering up the radio
■ reading the programming file
■ obtaining the details of the Software Feature Enabler (SFE)
■ reading the calibration file
■ checking the user interface
■ checking any error messages
The following tasks only need to be carried out if they relate to the fault
reported:
■ checking the transmit and transmit-audio functions
■ checking the receive and receive-audio functions
Important Observe the “General Information” on page 97.
Task 1 —
Initial
Administration
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.
Task 2 —
Visual Inspection
Check the radio for mechanical loss or damage, even if the fault concerns a
function failure only. Inspect the radio as follows:
■ knob for volume-control potentiometer
■ microphone grommet
■ rubber seal for RF connector
■ bung for auxiliary connector
■ bung for aperture for external options connector
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