TM8100/TM8200 Service Manual Servicing Procedures 155© Tait Electronics Limited November 20076 Servicing ProceduresScope of Section This section gives the full sequence of tasks required when servicing aparticular 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 andReassembly” on page 135.6.1 Initial TasksList 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 faultreported:■ checking the transmit and transmit-audio functions■ checking the receive and receive-audio functions.Important Observe the “General Information” on page 107.Task 1 —InitialAdministrationWhen a radio is received for repair, details of the Customer and the fault willbe recorded in a fault database. The fault reported by the Customer mightconcern damage to or loss of a mechanical part, or the failure of a functionof the radio, or both.Task 2 —Visual InspectionCheck the radio for mechanical loss or damage, even if the fault concerns afunction 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.
