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After checking the above items and fixing any problems, plug in the AC power cord
(mains lead) and turn on the receiver. If the problem persists, consult your nearest Sony
dealer.
[220] Troubleshooting Error messages
An over-current from the USB port was detected.
Disconnect all USB devices as prompted in the warning message and close the message.
[221] Troubleshooting Error messages
List of messages after Auto Calibration measurements
Code 30:
Headphones are connected to the PHONES jack on the receiver. Remove the
headphones and perform the Auto Calibration again.
Code 31:
Front speakers are not selected properly. Select the front speakers using SPEAKERS
and perform the Auto Calibration again. For details on selecting the front speakers, see
“4. Selecting the front speakers.”
Code 32, Code 33:
Speakers were not detected or not connected properly.
None of the front speakers are connected or only one front speaker is connected.
Either the surround left or surround right speaker is not connected.
Surround back speakers or front high speakers are connected even though surround speakers are
not connected. Connect the surround speaker(s) to the SPEAKERS SURROUND terminals.
A surround back speaker is connected only to the SPEAKERS SURROUND BACK/BI-
AMP/FRONT HIGH/FRONT B R terminal. If connecting only one surround back speaker, connect
it to the SPEAKERS SURROUND BACK/BI-AMP/FRONT HIGH/FRONT B L terminal.
Either the front high left or front high right speaker is not connected.
The optimizer microphone is not connected. Make sure that the optimizer microphone is
connected properly and perform the Auto Calibration again.
If the optimizer microphone is connected properly but the error code still appears, the
optimizer microphone cable may be damaged.
Warning 40:
The measurement process has been completed and a high noise level has been detected.
You may be able to achieve better results if you try the process again in a quiet
environment.