Functional Description and Specifications RUB SW
Page 13
1.6 Electronic Part Exchange
The hardware of the module comprises three printed circuit boards: The main electronic board
at the bottom layer, the keyboard which is fixed to the main electronic board by soldered pins,
and the rear panel board which is attached to the main electronic board by screws.
The rear panel board with its connectors and the latching relays con
sists of “mechanical”
parts, so there is a good chance that a damage of the module concerns the electronic part
only. The following exchange procedure removes the main electronic board and the keyboard
without interrupting the signal output. No cable should be disconnected.
Main
Electro
nic
Board
Keyboard
R
e
a
r
1.
Arrangement:
Contact your local dealer or Plura to order the main electronic board and the keyboard for
a replacement. It is essential that you have as much information ready as possible: Serial
number of the module, software version number, set-up and configuration. This will help to
ensure that you are getting a direct replacement, even regarding the set-up values
–
which
are stored in a non-volatile memory located at the main electronic board.
2.
Preparation:
Have a screwdriver for recessed-head screws ready.
3.
Removal:
Do not switch off the power. Do not disconnect cables. Follow the procedure described in
the chapter ‘
Remove a Module
’
of the
‘
Installation & Systems Manual RUBIDIUM SERIES
’
to
pull the module out of the slot. Observe precautions for handling electrostatic-sensitive
devices.
4.
Dismantle:
Unscrew only the three screws as shown in the figure above: One screw at the rear plate
and two screws at the rear panel board. Release the levers of both the IDC connectors and
pull out the 20-way ribbon cables. Now the main electronic board and the keyboard can
completely be removed.
5.
Reassemble:
In principle follow the procedure in the reverse order.
