D163 18 SM
9. Install the SG3 interface unit [A] ( x 3).
Insert the tab [B] of the SG3 interface unit bracket in the cutout [C] on the top of the
controller box and the tab [D] of the controller box in the cutout [E] of the SG3 interface
unit.
10. Attach one end of the flat cable [A] to CN603 on the FCU board and the other end of the
flat cable [A] to CN660 on the CCU I/F board of the SG3 interface unit.
Make sure that the blue tapes of the flat cable face outward.
11. Reinstall the rear cover and controller box cover.
12. Attach the two ferrite cores to the telephone cords for double-SG3 board installation.
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