T6TR VHF 50 W Transceiver
Page 14
Maintenance
Removing and Refitting the PA Control/Rx RF Module
The PA Control/Rx RF module is located as shown in
. A module removal diagram is shown in
Removal
Before attempting to remove the PA Control/Rx RF 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 bottom cover is removed and
power is applied to the radio.
(1)
Remove the transceiver’s bottom cover.
(2)
Locate the module and disconnect the following connectors (before removing CN7 and CN12,
note the antenna configuration):
CN1 50-way connector (50-way ribbon cable from Processor module)
CN6 10-way connector (10-way ribbon cable from PSU Regulator module)
CN5 SMB connector (reference frequency)
CN3 SMB connector (RF drive)
CN4 SMB connector (forward power sense)
CN2 6-way connector (to PA module)
CN8 SMB connector (to Processor module)
CN7 SMB connector from the Rx antenna connection or CN13 on the PA module (see
antenna configuration on
)
CN12 SMB connector (connects to CN13 on the PA module) or Rx antenna connection (see
configuration on
(3)
Remove the seven M3 x 8 mm captive washer screws that secure the module to the transceiver’s
mainframe.
(4)
Remove the module from the chassis.
WARNING
Dangerous Voltages
Содержание T6TR
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Страница 126: ...T6TR VHF 50 W Transceiver Page 28 Maintenance Back to Transceiver Main Page Fig 5 Location of RV9 RV9 Fine Power Adjust ...
Страница 130: ...Back to Transceiver Main Page Fig 9 Processor Module Removal and Refitting Detail PA CN 8 ...
Страница 131: ...Back to Transceiver Main Page Fig 10 PSU Regulator Module Removal and Refitting Detail Blue N Brown L ...
Страница 132: ...Back to Transceiver Main Page Fig 11 PA Control Rx RF Module Removal and Refitting Detail ...
Страница 133: ...Back to Transceiver Main Page Fig 12 Power Supply Removal and Refitting Detail ...
Страница 134: ...Back to Transceiver Main Page Fig 13 PA Module Removal and Refitting Detail ...
Страница 135: ...Back to Transceiver Main Page Fig 14 Front Panel Assembly PCB Removal and Refitting Detail Diagram A Diagram B ...
Страница 136: ...Back to Transceiver Main Page Fig 15 Cooling Fan Removal and Refitting Detail ...