http://faq.yamaha.com/us/en/article/audio-visual/av-receivers-amps/rx/rx-v473_black_u/10294/7121
RX-V473 Factory Reset – RX-V473 – RX-V – AV Receivers – Audio & Visual was last modified: November 5th, 2017 by
RX-V473 Factory Reset – RX-V473 – RX-V – AV Receivers – Audio & Visual
Jovan Stosic