ONKYO HT-S8400 User Manual

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Appendix

If you have any trouble using the AV receiver, look for a 
solution in this section. If you can’t resolve the issue 
yourself, contact your Onkyo dealer.

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If you can’t resolve the issue yourself, try resetting the 
AV receiver before contacting your Onkyo dealer.
To reset the AV receiver to its factory defaults, turn 
it on and, while holding down 

8ON/STANDBY. “Clear” will appear on the display 
and the AV receiver will enter standby mode.

Note that resetting the AV receiver will delete your 
radio presets and custom settings.

To reset the remote controller to its factory defaults, 
while holding down RECEIVER, press and hold down 
HOME until the remote indicator lights (about 3 
seconds). Within 30 seconds, press RECEIVER
again.

Make sure that the power cord is properly plugged 
into the wall outlet.

—

Unplug the power cord from the wall outlet, wait 
five seconds or more, then plug it in again.

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The AV receiver will automatically enter standby 
mode when Auto Standby has been set and launches.

Remote indicator

The protection circuit has been activated. Remove 
the power cord from the wall outlet immediately. 
Disconnect all speaker cables and input sources, and 
leave the AV receiver with its power cord 
disconnected for 1 hour. After that, reconnect the 
power cord and set the volume to maximum. If the 
AV receiver stays on, set the volume to minimum, 
disconnect the power cord, and reconnect your 
speakers and input sources. If the AV receiver turns 
off when you set the volume to maximum, 
disconnect the power cord, and contact your Onkyo 
dealer.

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Make sure that the digital input source is selected 
properly.

Make sure that all audio connecting plugs are pushed 
in all the way.

Make sure that the inputs and outputs of all 
components are connected properly.

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Make sure that the polarity of the speaker cables is 
correct, and that the bare wires are in contact with 
the metal part of each speaker terminal.

Make sure that the input source is properly selected. 21

Make sure that the speaker cables are not shorting.

Check the volume. The AV receiver is designed for 
home theater enjoyment. It has a wide volume range, 
allowing precise adjustment.

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If the MUTING indicator is flashing on the display, 
press the remote controller’s MUTING to unmute 
the AV receiver.

While a pair of headphones is connected to the 
PHONES jack, no sound is output from the 
speakers.

If there’s no sound from a DVD player connected to 
an HDMI IN, check the DVD player’s output 
settings, and be sure to select a supported audio 
format.

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Check the digital audio output setting on the 
connected device. On some game consoles, such as 
those that support DVD, the default setting is off.

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With some DVD-Video discs, you need to select an 
audio output format from a menu.

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If your turntable uses an MC cartridge, you must 
connect an MC head amp, or an MC transformer.

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Make sure that none of the connecting cables are 
bent, twisted, or damaged.

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Not all listening modes use all speakers.

Specify the speaker distances and adjust the 
individual speaker levels.

Make sure that the speaker setup microphone is not 
still connected.

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The input signal format is set to “PCM” or “DTS”. 
Set it to “Off”.