Originally Posted by movrshakr
Without expressing exasperation and frustration, I allow that it is puzzling why a company changes the code that works on some device as it moves to a new model of its remote. Whatever is the logic in doing that (rhetorical question)? Further, the company never listed the code as working for this device in the manual for either version of the remote.
Setup codes access tables of information stored in the remote, including the IR protocol type (NEC1 in this case), device number (210), subdevice number(s) if used, and of course the individual function numbers. Onkyo always uses device 210, and traditionally used subdevices 108 and 109. Over time, as the receivers have supported more functions, other subdevices have been used. Setup code 1789 supports 108, 109, and 4. Setup code 1805 adds subdevice 172, which is used with HDMI out, Ipod, USB, XM, Sirius, etc. So the B03, which is about 4 years newer than the B01, provides 1805 instead of 1789.
I have manuals for both the 1056B01 and B03. The B01 manual doesn't list 1805 as a possibility because it doesn't have this setup code. I don't know why the B01 manual only has 1789 under Audio accessories; it was probably a mistake. The B03 manual does list 1805 under "Audio Receivers and Amps", and www.urcsupport.com
also recommends 1805 for the B03.
UEI remotes typically have 4 classes of devices (Cable/SAT, TV, Video, and Audio). Setup code 1805 listed under Video Accessories applies to DVD or VCR buttons, and shoots the MCE IR protocol used by the Xbox. 1805 assigned to the Audio button provides the NEC1 IR protocol used by Onkyo.