Installing An Interface Board - Epson LQ-800 User Manual

Installing an Interface Board

1. Remove the upper case of the printer, following the steps described
in the previous section.
2. Remove the plastic piece from the hole at the back of the upper case
to allow access to the new interface connector when the case is re-
assembled.
3. Locate the supports shown in Figure G-3 on which the interface
board will rest, and the screw at the rear of the circuit board
labelled FG. The screw marked FG is the connection for the frame
ground wire. Remove the frame ground screw and the screw in the
support next to the parallel connector.
Plug the connector of the interface board into the female connector
4.
on the main circuit board of the printer. This connector is labelled
CN2 on the circuit board.
5. Secure the board to the support posts using the screws provided.
Figure G-3. Main circuit board
G-5