A-9150 - Troubleshooting: Audio
Since the issue may be caused by other components that are connected, be sure to also check them while referring to their manuals.
- Onkyo is not responsible for damages (such as CD rental fees) due to unsuccessful recordings caused by the unit’s malfunction. Before you record important data, make sure that the material will be recorded correctly.
- The integrated amplifier contains a microcomputer for signal processing and control functions. In very rare situations, severe interference, noise from an external source, or static electricity may cause it to lockup. In the unlikely event that this should happen, unplug the power cord, wait at least 5 seconds, and then plug it again.
- Before disconnecting the power cord from the wall outlet, set the integrated amplifier to Standby.
- If during idling the cover is too hot to touch, then ventilation needs to be improved.
Before requesting repairs
If the integrated amplifier is no longer working or functioning, any issues may be resolved by resetting the microcomputer contained in the integrated amplifier to revert all settings to their defaults.
Before requesting repairs, follow the procedure below to reset the microcomputer.
- With the integrated amplifier turned on, hold down DIRECT and press ÍON/STANDBY.
There’s no sound.
- Make sure the integrated amplifier’s volume control is not
set to minimum.
- Make sure the correct input source is selected.
- Make sure the integrated amplifier is not muted.
- Make sure the speakers are connected correctly.
- Check all connections and correct as necessary.
- While headphones are connected, the speakers output no
- The integrated amplifier does not support digital formats
other than PCM. Inputting a digital format other than PCM
will cause loud noise.
The sound quality is not good.
- Make sure the speaker cables are connected with the
- Make sure all audio connecting plugs are pushed in all the
- The sound quality can be affected by strong magnetic
fields, such as those from a TV. Try moving any such
devices away from the integrated amplifier.
- If you have any devices that emit high-intensity radio
waves near the integrated amplifier, such as a cellular
phone that’s being used to make a call, the integrated
amplifier may output noise.
Headphone output is intermittent or there’s no sound.
- This may be due to dirty contacts. Clean the headphones
plug. See your headphones’ instruction manual for cleaning
information. Also, make sure that the headphones cable is
not broken or damaged.
- Audio performance will be at its best about 10 to 30
minutes after the integrated amplifier has been turned on
and had time to warm up.
- Using cable ties to bundle audio cables with speaker or
power cables may degrade the sound quality, so refrain
from doing it.
- Depending on the country, the integrated amplifier may be
polarity-sensitive. In this case, plug the power cord in a
way that provides the best sound quality.
- Install the integrated amplifier on a sturdy rack or shelf.
Position it so that its weight is evenly dispersed on its four
legs. Do not install the integrated amplifier in a place with
vibration or an unstable location.
- Plug the power cord into an AC wall outlet.