Epson LQ-860 User Manual page 185

The Interface Boards
Installing the board
There are two basic types of interface board designs, which slightly
change the way they are installed in the printer. The frame ground
(FG) wire is attached for one type and
This difference does not affect the operation of the interface in any
way. Check to see which type of interface board you have and then
follow the instructions for that type of board.
FG wire not attached
If the FG wire is
1. Set the DIP switches on the interface board according to the
manual accompanying your interface board.
5-48 Using the Printer Options
attached, follow these steps:
not
attached for the other.
not
FG wire attached