Park Air Systems T6TR, User Documentation

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T6TR VHF 50 W Transceiver Page 19 Maintenance
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Refitting
To refit the PA module, proceed as follows:
When carrying out repairs to the PA module, care must be taken not to damage the gasket.
If the strips become damaged, they must be replaced. Failure to comply with this instruction
may compromise the transceiver’s Electromagnetic Compatibility (EMC) and breach
European Commission regulations.
When screws are inserted into the transceiver PA casting care must be taken not to exceed
a torque of 6 Ibs/inch when tightening. This applies when replacing the top and bottom
covers and during the refitting of the PA module.
(1) Place the module in position and butt it up to the mainframe. Ensure no wires are trapped by the
module.
(2) Fit the six M3 x 8 mm countersunk screws and two M3 x 8 mm captive screws, all previously
removed, that secure the module to the transceiver’s mainframe.
(3) Fit the black equipment handle to the PA side of the radio using the two M5 x 16 mm panhead
screws previously removed.
(4) Connect the SMB connectors CN8 and CN10. Note that CN10 is located within the heatsink fins
and should be connected using long nosed pliers if unable to use fingers in the enclosed space.
(5) With the transceiver upside-down connect CN2 to the PA Control/Rx RF module.
(6) Fit CN3 to the PSU Regulator module.
(7) Re-establish the ac and/or dc supplies.
(8) Switch power on at the radio using the rear mounted Power switch.
(9) Ensure the front panel Ready indicator is lit and the Alarm indicator is unlit.
(10) Carry out the Calibrate routine using the Virtual Front Panel (VFP), as detailed in the procedure
To Calibrate the Transceiver on page 27 .
(11) Carry out a BIT interruptive test as detailed in the procedure To Initiate a BIT Test on page 5 .
(12) Remove the VFP PC to radio interconnection lead and set the rear panel Power switch to
Standby. Isolate the transceiver from the ac and/or dc supplies.
(13) Refit the transceiver’s top and bottom covers. The transceiver can now be returned to service.
Caution Repairs