16.
SERVICING
Disconnecting
CAUTION
Before any connections are removed, be sure to write down, label, photograph or otherwise
record all the connections. Due to the variety of customer requirements and variations in
manufacturing the connection instructions given here can only be used as a guide.
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COMMS Board.
Unscrew all the wires from the COMMS board.
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UPS Motherboard
. Unscrew all the terminal block connections and unplug all the
connectors on the UPS board.
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COM5 PT1 Processor board.
Disconnect the ethernet cable from the processor board.
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Power Supply.
Unscrew terminals marked L, N, FG (Live, Neutral and Frame Ground
respectively). Disconnect all the wires connected to the power supply module.
Cut any cable ties that may be securing the wires to the chassis or wires that are part of the
module.
NOTE:
The module is heavy. Make sure it is well supported and no wires are pulled as you
remove it.
Electronic Module Removal
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Turn off the mains switch and the Battery Isolation switch before commencing this
procedure.
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Remove all the connectors/ wires and disconnect from the electronic module.
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Unscrew the four Electronic Module retaining nuts at the bottom of the unit.
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Using both hands pull the Module forward off the studs.
Replacement
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Reconnect all the cables that were removed.
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Lift the module up, place on the studs and fasten with nuts and washers.
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Check all connections are secure.
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Re-power and test.
Power Supply Replacement
The power supply is a modular unit and repair is not recommended except by an experienced
power supply repair technician.
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Turn off the mains switch and disconnect the positive terminal from the battery before
commencing this procedure.
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Note the connections to the screw down terminals and remove the connections.
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Remove the power supply.