R.V.R. Elettronica PTX-LCD, Руководство пользователя

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PTX-LCD
44 / 58 User Manual Rev. 2.3 - 18/07/07
10.2 Access to the modules
ATTENTION: opening the device, points with dangerous voltages and currents
are exposed. Always disconnect the mains supply before removing the covers or
taking away any part of the piece of equipment.
Remove all the screws on the upper cover of the exciter. After taking away the
cover, identify with the help of figure 10-1, the components of the exciter.
To remove the coder boards (stereo and mono) and PLL, it is sufficient to remove
the nuts that fix them to their hexagonal supports. Note that in the lower parts of
both boards there are strip line connectors that are plugged into the audio
motherboard.
To remove the input audio board (that is united with the audio connector board
and the right part of the rear panel of the exciter), unscrew the four nuts that fix the
board to the hex supports on the audio mother board.ore), the five screws on the
rear panel (figure 10-2) and the three screws in the bottom part that fix the support
of the connectors.
Figure 10-2
The RF power amplifier, joined to its heatsink, is kept in place by three screw on
the bottom of the exciter. The screws are fastened in the heatsink, and it’s sufficient
to remove them to release the amplifier.
To remove the power supply and the switching power supply, the same procedure
has to be followed, i.e. the screws that fix the heatsinks to the bottom of the
machine have to be removed. Note that the interlock connector, soldered to the
power supply, is fixed to the rear panel with a nut that has to be removed to
release the power supply.
Finally, the panel board and the CPU board are simply fixed tu hex supports on
the front panels with nuts. To remove these boards, we suggest to release the
front panel of the exciter from the chassis.
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