Step 3:
Replace the communication
board:
Take a new communication board,
demount the 2 screws of the DB-15
port.
Disconnect the cables on the
communication board, and demount
the srews that used to fasten the
communication board to the rear
panel.
Replace the board with a new one,
connect the cables, install the
screws.
2.3 Parallel kit installation
Step 1:
Assemble the wires to
the OP relay board.
Step 2:
Demount the 3 wires
from the O/P EMI board.