Park Air Systems T6TR, User Documentation

Page: 110 / 136

T6TR VHF 50 W Transceiver Page 12 Maintenance
Back to Transceiver
Main Page
supplied. Care must be taken when using a module removed from another radio as this module
may not have compatible software.
(10) If saved during the removal procedure, download the radio settings from file using the VFP (see
VFP information starting on page 22 ). Alternatively the settings can be edited by hand as
described in the Operation section of this document. Once entered, ensure the required settings
appear in the VFP screen.
(11) Carry out the Calibrate routine using the Virtual Front Panel (VFP), as detailed in the procedure
To Calibrate the Transceiver on page 27.
(12) Carry out a BIT interruptive test as detailed in the procedure To Initiate a BIT Test on page 5 .
(13) 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.
(14) Refit the transceiver’s top cover. The transceiver can now be returned to service.
Removing and Refitting the PSU Regulator Module
The PSU Regulator module is located as shown in Fig 8 . A module removal diagram is shown in Fig 11 .
Removal
Before attempting to remove the PSU Regulator module, ensure that the transceiver is isolated from the
ac and dc input supplies. Then proceed as follows:
Dangerous voltages are present within the transceiver. Care must be taken by personnel to
avoid accidental contact with exposed circuitry when the top cover is removed and power is
applied to the radio.
(1) Remove the transceiver’s top cover as described on page 9 .
(2) Locate the PSU Regulator module and remove the three M3 x 8 mm captive washer screws that
secure the module to the transceiver’s mainframe.
(3) Carefully raise the module to gain access to the module connectors.
(4) Disconnect the following connectors:
‰
CN5 10-way connector (10-way ribbon cable to PA Control/Rx RF module)
‰
CN6 6-way connector (2-way loom to power supply)
‰
CN4 14-way connector (14-way ribbon cable to Processor module)
‰
CN3 3-way connector (3-wire loom to PA module)
‰
CN7 3-way connector (3-wire loom to rear panel On/Off switch)
‰
CN2 2-way connector (2-wire loom from dc input connector on rear panel)
‰
CN1 4-way connector (4-wire cable from power supply)
‰
CN9 2-way connector (2-wire cable ac input to power supply)
‰
CN8 3-way connector (2-wire loom to rear panel ac input connector plus chassis connection).
(5) Remove the module from the chassis.
WARNING Dangerous Voltages