Epson SRC520 Manual page 119

Maintenance 3.3 Replacing the Extension Emergency Connector Unit (Control Unit))
(5) Remove two affixing screws, and then take the metal fitting off from the board.
(6) Disconnect the cable connecting between the MIB and Extension Emergency
Connector Board.
(7) Unfasten an affixing screw from the Extension Emergency Connector Board and
remove the Board.
(8) Mount a new Extension Emergency Connector Board onto the slot and fasten the
screw to secure the new board.
(9) Connect the MIB to the Extension Emergency Connector Board with a cable.
(10) Loosen the screws that are holding the angles on the metal fitting.
(11) Affix the metal fitting to the Control Unit.
(12) Adjust the angle and fix it inside the unit using screws. The angle must be adjusted
to hold down the board not too tightly.
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