Panasonic model: sc-hm780

Hi,i'm repairing a sytem sc-hm780 and show for me in display F61 this mensage is only detetc dc volts in audio output? But i changed audio out chip and measuging voltage in pin 32 of ci controler M38197MA136F have a pulse 5v whem the power on . Please , have other condition to show this alarm f61? Thanks,i will stand by.

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