Hello I bought this remote control for my hi-fi system "Denon RCD-M37" (remote control RC-1097) here because I was explicitly looking for a remote control for this system. However, only TV sets are listed on the code list. There is an option via "Code Search". But the designations in the instructions manual do not match the unit. According to I-M, the CH+ key must be pressed, but this key does not exist on the unit. Can anyone help me?