Denon AVR-X1700H 7.2-Channel Network A/V Receiver with HEOS - Manual (Page 53)

Connection 3 : TV equipped without an HDMI connector
Use a video cable to connect the TV to this unit.
To listen to audio from TV on this unit, use an optical cable to connect the TV to this unit.
.
OUT
OPTICAL
OUT IN
IN
VIDEO
TV
Contents Connections Playback Settings Tips Appendix
53
Front panel Display Rear panel Remote Index