Connector Pin Assignments
Speaker Connector
The speaker connector (CN3) is a 4-pin, male header connector, accessible from inside the
computer and located on the system board Figure A-3 shows the connector and Table A-3
provides the pin assignments.
Serial Port Connectors
The serial ports (CN4 and CN8) are 9-pin, D-shell male connectors, accessible from the rear
of the computer. Figure A-4 shows the connector and Table A-4 provides the pin assignments.
A-8
Epson NX Service Manual
Table A-4
Serial Port Connector Pin Assignments