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Appendix
Troubleshooting
If the PA-MC5501 fails to function normally, first check
the following points before contacting your Onkyo dealer.
If the problem is not solved after going through the
following list, unplug the power cord and contact your
Onkyo dealer.
■ No power
■ Power turns on but no sound
■ The amplifier turns off and after restoring the
power, it turns off again
■ The 12V trigger of the PA-MC5501 does not
react to that of the PR-SC5509
■ Humming or other noise is heard
Power cord is not correctly plugged into AC outlet/Inlet.
→ Plug the power cord into the AC outlet/Inlet properly.
Incomplete connections.
→ Check speaker cable connections.
→ Insert all plugs firmly into jacks.
No input signal from AV controller.
→ Check for input signal from AV controller.
Incorrect INPUT SELECT switch setting.
→ Set INPUT SELECT switch to correct setting.
The protection circuit has been activated. Remove the power
cord from the wall outlet immediately. Make sure that all
speaker cables and input sources are properly connected, and
leave the amplifier with its power cord disconnected for 1
hour. After that, reconnect the power cord and turn the power
on. If the amplifier turns off again, unplug the power cord and
contact your Onkyo dealer.
WARNING
If smoke, smell or abnormal noise is produced by the
amplifier, unplug the power cord from the wall outlet
immediately and contact your Onkyo dealer.
Connection between the 12V trigger terminals is incomplete.
→ Connect the cables to the terminals firmly.
Input cable connection is incomplete.
→ Insert the input cable to pin jack or connector completely.
Noise from power cord or power transformer affects the input
cable.
→ Keep power cord or power transformer away from the
input cable.
Power cord or speaker cables are bundled together with pin
cords.
→ This may cause humming or noise. Do not bundle power
cord or speaker cables with pin cables together.
Connection to the input terminals is not complete or not
appropriate.
→ For each channel’s input terminals, connect cables or cords
to either balanced input terminal or audio input terminal only
and switch the INPUT SELECT switch accordingly.
Avoid connecting the cables or cords to the input terminals
that will not be used.