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Preparation (19" Casing Variants)
Warning: Touching the voltage carrying conductors
or the telephone connections – including those on the
modules – may cause a life-threatening electric
shock.
The PBX contains hazardous voltages, even out-
side of the power supply unit (for instance ringer
voltages). Work on active, contact-hazardous
parts is only permitted after creating a voltage-
free state.
Working close to active parts is only permitted if
these parts are voltage-free or are protected
against direct contact.
The Power button switches the voltage at the
module expansion slots and on the main circuit
board off. If the system is switched off, a skilled
electrician can be commissioned to replace or
install expansion modules.
When installing or replacing a module, only touch
the fixing components of the front plate where
necessary. Do not insert any electrically conduc-
tive objects into the casing, since hazardous vol-
tages continue to apply in the power supply unit of
the system.
If available, also disconnect the devices from
auxiliary power sources (for example, UPS).
Caution: Electrostatic charges can destroy sensitive
components.
Divert electrostatic charges from yourself before
touching the circuit boards with your hands or any
tools. To do this, touch a metal object, preferably
earthed, e. g. the earthing terminal of the PBX or
a computer housing.
Requirements
– Previous system planning
Note: Before inserting the module, first configure the
required settings on the module.
Note: Make sure that the modules are placed in such
a way as to make the ribbon cable connection paths
as short as possible.
– Screwdriver
– The applicable connector panel for the module
Note: Insert the appropriate ribbon cable into the
corresponding socket before inserting the module.
Note: Modules
manufactured
(COMmander 4S
module: prior to 2004) do not have
0
the additional socket for connecting to the front panel.
If you would like to upgrade the PBX with already
existing older modules, you can acquire the
necessary adaptor circuit boards from the Internet
shop distriCOM at http://www.districom-online.de.
(Delivery is provided only in Germany.)
36
Updating or Upgrading the PBX
prior
to
2003
Steps to Take
1.
Insert the module: Guide the module between the two
circuit
board
latches
downwards to the base circuit board until it snaps in
securely. See
Fig.
32.
Fig. 32: Insert the module
Pull out the module: Push the circuit board latch on
the slanted side of the module a short distance away
from the module, and then using the other hand,
simultaneously remove the module almost vertically
from the base circuit board. See
Note: Make sure that the module is fastened on the
edge centered in relation to the connector.
Fig. 33: Pull out the module
2.
Remove the dummy panel: Loosen both screws and
remove the dummy panel. See
and
press
it
vertically
Fig.
33.
Fig.
34.
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