Denon AVR-791 Owners Manual - English - Page 79
Troubleshooting
UPC - 883795001359
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ENGLISH Troubleshooting If a problem should arise, first check the following: 1. Are the connections correct? 2. Is the set being operated as described in the owner's manual? 3. Are the other components operating properly? If this unit does not operate properly, check the items listed in the table below. Should the problem persist, there may be a malfunction. In this case, disconnect the power immediately and contact your store of purchase. GGeneralH Symptom Power does not turn on. Display is off. Cause/Solution • Check whether the power plug is correctly inserted into the power outlet. • The protection circuit is active. Disconnect the power plug from the electric outlet, wait 5 to 10 seconds and then insert it back into the outlet. • Set "Display" on the menu to something other than "OFF". The power indicator is blinking red in intervals of approximately 2 seconds. The power indicator is blinking red in intervals of approximately 0.5 seconds. After turning on the power, the power indicator is blinking red in intervals of approximately 0.5 seconds. Set does not operate properly. • The temperature inside the unit has risen. Please turn off power once, and re-apply the power after the temperature has fallen sufficiently. • Please re-install this unit in a place having good ventilation. • Please use speakers which have the specified impedance. • The speaker cable has shorted (is touching). Firmly twist the core wire in the speaker cable, and then re-connect it to the speaker terminal. • This unit amplifier circuit has failed. Turn off the power and please contact the DENON service adviser. • Reset the microprocessor. GVideoH Symptom No picture appears. Cause/Solution • Check the TV connection. • Set the TV input correctly. Page 5 5, 75 58 - - 4 4 - 78 Page 5 6 GAudioH Symptom Audio is not output. No sound is produced from surround speaker. No sound is produced from surround back speaker. No sound is produced from front height speaker. No sound is produced from subwoofer. DTS sound is not output. Dolby TrueHD, DTSHD, Dolby Digital Plus audio is not output. Cause/Solution • Check the connections for all devices. • Check the speaker connections. • Check whether the audio device power is turned on. • Adjust the master volume. • Cancel the mute mode. • Select a suitable input source. • Select a suitable input mode. • Disconnect the headphones. No sound is output from the speakers or the PRE OUT connectors when headphones are connected. • Check if the surround speakers are connected to the SURROUND terminals. • Set "Amp Assign" on the menu to "Normal". • Set "Speaker Config." - "S.Back" on the menu to something other than "None". • Set "Surround Parameter" - "S.Back" on the menu to something other than "OFF". • Set the surround mode to something other than "STEREO". • Set "Surround Parameter" - "Front Height" on the menu to "ON". • Set "Amp Assign" on the menu to "Front Height". • Set "Speaker Config." - "Surround" on the menu to something other than "OFF". • Check the subwoofer connections. • Turn on the subwoofer's power. • Set "Speaker Config." - "Subwoofer" on the menu to "Yes". • If "Front" and "Center" for "Speaker Config." are set to "Large", and "Subwoofer Mode" is set to "LFE", no sound may be output from the subwoofers, depending on the input signal or selected surround mode. • Set "Decode Mode" on the menu to "Auto" or "DTS". • Make HDMI connections. Page 5, 15 - 19 5, 31, 32 6 20, 37 20, 37 20, 37 46 65 - 52 53 48 26 48 52 - 5, 31, 32 6 52 53 46 14 76