Register and download the USER GUIDE (10.6MB) for free at retrevo.com
http://www.retrevo.com/support/Denon-AVR-2809CI-Receivers-manual/id/21864dj590/t/2/
Page 60
Resetting the Microprocessor
Perform this procedure if the display is abnormal or if operations cannot be performed.
When the microprocessor is reset, all the settings are reset to their default values.
1 Turn off the power using <POWER>.
2 Press <POWER> while simultaneously pressing
<STANDARD> and <DSP SIMULATION>.
3 Once the display starts flashing at intervals of about 1
second, release the two buttons.
Register and download the manual for free at retrevo.com
http://www.retrevo.com/support/Denon-AVR-1707-Receivers-manual/id/696ci073/t/2/
How did test tones sound? Page 10
Muting should be OFF.
EXT IN should be OFF.
VCR and CDR/Tape NOT selected.
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