T6T VHF 100 W Transmitter
Page 17
Maintenance
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(5)
Remove the six M3 nuts that secure the Combiner BIT module PCB to the stud spacers. Also
remove the two M3 x 8 mm panhead screws that secure the Combiner BIT module heatsink to
the lower PA heatsink. The Combiner BIT module can now be removed.
Refitting
(1)
Place the Combiner BIT module in place on the stud spacers and replace the six washers and
nuts but do not tighten. Take care that cables are dressed properly and that none are trapped.
Replace the two screws that secure the Combiner BIT module to the PA heatsink, but do not
tighten.
(2)
Turn the unit over and replace the six countersunk M3 x 6 mm screws. Tighten these and return
to the other side to tighten the six nuts and two screws.
(3)
All 22 connectors removed earlier can now be reconnected. Refer to
Fig 6
and
Fig 7,
if
necessary.
(4)
Re-establish the ac and/or dc supplies.
(5)
Switch power on at the radio using the rear mounted Power switch.
(6)
Ensure the front panel Ready indicator is lit and the Alarm indicator is unlit.
(7)
Carry out the Calibrate routine using the Virtual Front Panel (VFP), as detailed in the procedure
To Calibrate the Transmitter on page 26.
(8)
Carry out a BIT interruptive test as detailed in the procedure
To Initiate a BIT Test on page 5
.
(9)
Set the rear panel Power switch to Standby and remove the VFP connector. Isolate the
transmitter from the ac and/or dc supplies.
(10) Refit the transmitter top and bottom covers. The transmitter can now be returned to service.
Содержание T6T
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Страница 110: ...Back to Transmitter Main Page Fig 8 Processor Module Removal and Refitting Detail CN6 CN5 CN4 CN3 CN1 ...
Страница 111: ...Back to Transmitter Main Page Fig 9 PSU Regulation Module Removal and Refitting Detail CN3 CN1 CN4 CN5 CN2 CN6 CN7 ...
Страница 112: ...Back to Transmitter Main Page Fig 10 PA Control Module Removal and Refitting Detail CN4 CN3 CN6 CN1 CN2 CN5 behind box ...
Страница 115: ...Back to Transmitter Main Page Fig 13 PA Modules Removal and Refitting Detail PA 1 PA 2 ...
Страница 116: ...Back to Transmitter Main Page Fig 14 Front Panel and Front Panel Assembly PCB Removal and Refitting Detail ...
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