Epson 73c - Manual (Page 87)

Appendix A: Connecting to Additional Equipment 81
Connecting the Computer Cable
Follow these steps to connect the computer cable. You may not need
to use the adapter as shown.
1. Disconnect the monitor cable from the video port on the back of
the Macintosh.
2. If you want to view the display on your computer monitor as well
as the projector screen, connect the monitor cable to the
projector’s
Monitor Out port, as shown.
3. Connect one end of the computer cable to the projector’s
Computer/Component Video port, as shown.
4. Connect the other end of the computer cable to the video port on
the Macintosh.