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17
Troubleshooting and Maintenance
Changing a wiring terminal block
If a continuity test channel returns OPEN (not wired) but the match and wiring looks good, the
next step is often to remove the E-match and put a short length of wire across the two terminals.
If it still reports OPEN, then there is a problem with the connector block.
The connector block can be removed by unscrewing the Phillips head screws on either side of
the block and pulling the connector block upwards.
You may replace that block with another (contact Firelinx.com for replacements and spares) or if
that block was recently changed or otherwise disconnected from the FM, it is likely that the two
small connectors between the wiring block and the FM printed circuit board did not get seated
properly.
To insert a connector block, replace the two screws and lower them into the slots in the case as
the block is lowered towards the internal pins on the PCB. Carefully check that the left and right
alignment of the pads and connector pins are correct and hold the connector block straight up
from the board (90 degrees) and then slowly seat the pins. If there is resistance, it’s probably
not aligned correctly. Tighten the screws. We advise that a continuity test be performed on the
block channels to ensure that it was seated correctly.
Cleaning the FM
The modules often will come back from the field with dirt and pyro fallout on them. Most can
be removed with a soft damp rag. We recommend a toothbrush for cleaning the tops of the
terminals and the narrow spacing between the terminals.
Batteries
The Lithium-Polymer (LiPo) internal batteries are 7.4V 5200mAH. They have built-in safety and
charging systems, so we recommend replacement every 5 years with an approved Firelinx
replacement battery. Use of another battery type voids the warrantee. The batteries should not
be stored in an environment over 60 degrees Celsius or 140 degrees Fahrenheit. While the
internal batteries should last 8-12 hours in normal use, a second battery pack can be installed.
Note that if a second battery is installed, there will not be room to also install an Open
Pyro Network (OPN) bus expansion card.